† Only available in China and countries in the Asia Pacific region. The server supports the external USB optical drive listed in the following table. Processor TDP greater than 155W is not supported. DDR4-2933 and DDR4-3200. For specifications about these racks, see the Lenovo Rack Cabinet Reference, available from: Mid bays and Rear bays cannot be used concurrently, The RAID 730-8i 1G cannot be used for connection to the rear drive bays, Only the RAID 530-8i or the 430-8i HBA can be selected when a separate controller is needed for the rear drive bays, The RAID 730-8i 2G cannot be used in the same server as the RAID 730-8i-1G or RAID 930-8i, The M.2 Adapter is not supported in configurations of 16 or more 2.5-inch NVMe drives in the front bays, For performance reasons, select the 1610-4P NVMe switch adapter instead of the 810-4P NVMe switch adapter, when available, SAS/SATA Cable Kit (power cable, miniSAS-HD cable), SAS/SATA Cable Kits (power cables, miniSAS-HD cables), NVMe Cable Kits (power and x8 slimline cables), 1U Performance Heatsink (replaces existing heatsink), 6x Performance fans (replaces existing fans), 2x SAS/SATA Cable Kits (power cable, miniSAS-HD cable), 2x NVMe Cable Kits (power cable, signal cable), PCIe Riser 1 riser (provides x16 slot 3 only), PCIe Riser 2 riser (provides x16 slot 6 only), PCIe Riser 2 riser bracket (converts existing 3-slot riser to low profile slots), NVM Cable Kit (power cable, signal cables), 1x Bracket to hold two supercaps in their holders, 800mm MiniSAS-HD to MiniSAS-HD Cable C, SC17A50746, 600mm Slimline 4X RA to Slimline4X, SC17A50708, Support 42mm, 60mm and 80mm drive form factors (2242, 2260 and 2280), RAID support via an onboard Marvell 88SE9230 SATA RAID Controller, Support JBOD, RAID-0 and RAID-1 (RAID support requires two M.2 drives), PCIe 2.0 x2 host interface; 6Gbps SATA connection to the drives, Management and configuration support via UEFI and OS-based tools, Supports monitoring and reporting of events and temperature through I2C, Firmware update via Lenovo firmware update tools, Supports one or two M.2 drives, either SATA or NVMe, When two drives installed, they must be either both SATA or both NVMe, Either 6Gbps SATA or PCIe 3.0 x4 interface to the drives depending on the drives installed, Onboard SATA ports for up to 16 SATA drives, RAID adapters and HBAs for SAS/SATA drives, Onboard NVMe ports (for up to 16 NVMe drives), NVMe adapters for configurations of 20 or more NVMe drives, Option 1*: x16, x8, x8 (all physically x16 slots), Option 2*: x16, x16, NC (slot 3 not connected), Option 3: NC, NC, x16 (1U riser; slot 1 and slot 2 not connected), Option 4: x16, NC, NC (slot 2 and slot 3 not connected), Option 1: x16, x8, x8 (all physically x16 slots), Option 2: x16, x16, NC (slot 6 not connected), Option 3: NC, NC, x16 (1U riser; slot 4 and slot 5 not connected), Option 1*: x8, x8 (both physically x16 slots), Slot 9: Internal PCIe 4.0 x8 low-profile slot for internal drive controller (physically a x16 slot)*, If the 3.5-inch mid-chassis drive cage is configured, then the maximum number of flash power modules (and therefore the maximum number of 930-8e adapters) is 2. The service processor is based on the ASPEED AST2500 baseboard management controller (BMC). ThinkSystem SR655 is a multi-GPU optimized rack server, with support for up to 6 single-wide GPUs providing 200% more workload acceleration in AI, SDI and VDI instances. Supports high-speed RAID controllers from Broadcom providing 12 Gb SAS connectivity to the drive backplanes. Optional chassis intrusion switch. With the 2.5-inch chassis, all drive bays are 2.5-inch bays. Note: UpdateXpress is not supported on the SR655. For more information, see the list of Lenovo Press Product Guides in the Host bus adapters category: The SR655 supports NVMe drives to maximize storage performance, as follows: The specifics of these configurations plus other NVMe-rich configurations are covered in the Supported drive bay combinations and  Adapters selections sections. A virtual presence (iKVM remote control and virtual media) capability also comes standard in the server for remote server management. ThinkSystem SR655 is a multi-GPU optimized rack server, ... Lenovo delivers cost-effective, reliable and scalable solutions by combining industry-leading technology and the world’s best software-defined offerings with Lenovo ThinkShield and XClarity to manage the lifecycle of your data center needs. Outstanding reliability, availability, and serviceability (RAS) and high-efficiency design can improve your business environment and can help save operational costs. https://lenovopress.com/servers/options/hba Optional service upgrades are available. The use of NVMe drives may limit the use of PCIe slots or M.2 drives as described in the I/O expansion section. View all documents published by this author. The power-source-independent light path diagnostics uses LEDs to lead the technician to failed (or failing) components, which simplifies servicing, speeds up problem resolution, and helps improve system availability. Supports 3.5-inch drive bays for lower-cost high-capacity storage. It offers two-socket performance in a 2U, single-socket design, featuring higher core, and storage density; increased I/O throughput with less latency; along with built-in system security. The following configurations are supported: The drive bays in the open position are shown in the following figure. ThinkSystem SR655 is a multi-GPU optimized rack server, with support for up to 6 single-wide GPUs providing 200% more workload acceleration in AI, SDI and VDI instances. This document summarizes the SPECpower_ssj 2008 benchmark result for the ThinkSystem SR655 that was published on August 7, 2019. Use this 3D Interactive Tour of the ThinkSystem SR655 Server to see the components of the dense server and learn about many of its key features. ** 8x NVIDIA T4 are supported via Special Bid, For information about these GPUs, see the ThinkSystem GPU Summary, available at: Double-wide GPUs are installed in the top slots of each riser (see. Lenovo has stood with you throughout the COVID-19 pandemic, maintaining our service and supporting our customers through this challenging time. Updated 23 Apr 2020 Form Number DS0032 PDF size 2 pages, 280 KB * All NVMe drives, with the exception of PM983 drives, are 15mm high and are only supported in the front drive bays due to thermal requirements. The Lenovo ThinkSystem SR655 server delivers world-record single-socket performance for compute-intensive applications with four new results of the SPEC CPU2017 benchmark. Lenovo Service offerings are region-specific. Memory mirroring and memory rank sparing are not supported. ASHRAE Class A4: 5°C to 45°C (41°F to 113°F); the maximum ambient temperature decreases by 1°C for every 125 m (410 ft) increase in altitude above 900 m (2,953 ft). Pointing Device USB - Spanish 172 RoHS v2, ThinkSystem Keyboard w/ Int. Supports a variety of 2-port and 4-port adapters with 1GbE, 10GbE and 25GbE network connectivity. The following figure shows the slots where double-wide (top image) and single-wide (bottom) are installed. ThinkSystem SR655 Option T4 GPU Upgrade and Thermal Kit. Figure 6. Our Company News Investor Relations Sustainability Product Compliance Product Security For double-wide GPUs and the T4 GPU, the following front drive bay restrictions apply: Maximum of 8x 3.5-inch front drive bays supported (12 bays not supported), Maximum of 16x 2.5-inch front drive bays supported (24 bays not supported). This document summarizes the the … When a GPU is added as a field upgrade, all empty DIMM slots must have a dummy DIMM blank installed in each DIMM slot, to ensure the optimal air flow. A cluster of five Lenovo ThinkSystem SR655 servers has achieved the world’s best TPCx-IoT performance and price/performance results for any server configuration. ** When 4x3.5" rear drive bays are configured, the 930-24i can only be installed in slot 3. This document summarizes the the SPECjbb2015 benchmark results for the ThinkSystem SR655 that was published on August 7, 2019. The drive is based on the Lenovo Slim DVD Burner DB65 drive and supports the following formats: DVD-RAM, DVD-RW, DVD+RW, DVD+R, DVD-R, DVD-ROM, CD-RW, CD-R, CD-ROM. Why may there be various speeds of Lenovo ThinkSystem SR655 memory? In China only, all power supply options support 240 V DC. The Lenovo ThinkSystem SR655 is a 1-socket 2U server that features the new AMD EPYC 7002 "Rome" family of processors. For you, this dedication provides a high-quality, easy, and positive financing experience. Details are listed in the following table. No 3.5-inch drives are supported with the 2.5-inch chassis. Here’s a more in-depth look at what we can do for you: Asset Recovery Services (ARS) helps customers recover the maximum value from their end-of-life equipment in a cost-effective and secure way. The following table lists the geo-specific Lenovo XClarity Energy Manager software license options. * Note: The server supports at most 32 drives, even though there are 36 physical 2.5-inch drive bays. * Option part number 4XF7A72373 and 4XH7A09842 includes the GPU power cable We have quick delivery, etc. If an environmental condition exceeds a threshold or if a system component fails, the ASPEED service processor lights LEDs inside the server to help you diagnose the problem and find the failing part. Assessments help organizations like yours, no matter how large or small, get a better return on your IT investment and overcome challenges in the ever-changing technology landscape. Bootable Media Creator Dual-voltage power supplies are auto-sensing and support both 110V AC (100-127V 50/60 Hz) and 220V AC (200-240V 50/60 Hz) power. System x® These proactive alerts let you take appropriate actions in advance of possible failure, thereby increasing server uptime and application availability. Corrected the processor used in the following A/NZ and EMEA models: Expanded the information on server dimensions -, ThinkSystem 3.5" 16TB 7.2K SAS 12Gb Hot Swap 512e HDD, 4XB7A13911, ThinkSystem 3.5" 16TB 7.2K SATA 6Gb Hot Swap 512e HDD, 4XB7A13914, New option part number for the cable management arm for the Toolless Slide Rail -, ThinkSystem 2.5" Multi Vendor 1.92TB Entry SATA 6Gb Hot Swap SSD, 4XB7A38274, ThinkSystem 2.5" Multi Vendor 240GB Entry SATA 6Gb Hot Swap SSD, 4XB7A38271, ThinkSystem 2.5" Multi Vendor 3.84TB Entry SATA 6Gb Hot Swap SSD, 4XB7A38275, ThinkSystem 2.5" Multi Vendor 480GB Entry SATA 6Gb Hot Swap SSD, 4XB7A38272, ThinkSystem 2.5" Multi Vendor 960GB Entry SATA 6Gb Hot Swap SSD, 4XB7A38273, ThinkSystem U.2 PM1733 1.92TB Entry NVMe PCIe 4.0 x4 Hot Swap SSD, 4XB7A38196, ThinkSystem U.2 PM1733 3.84TB Entry NVMe PCIe 4.0 x4 Hot Swap SSD, 4XB7A38197, ThinkSystem 3.5" Multi Vendor 1.92TB Entry SATA 6Gb Hot Swap SSD, 4XB7A38279, ThinkSystem 3.5" Multi Vendor 240GB Entry SATA 6Gb Hot Swap SSD, 4XB7A38276, ThinkSystem 3.5" Multi Vendor 3.84TB Entry SATA 6Gb Hot Swap SSD, 4XB7A38281, ThinkSystem 3.5" Multi Vendor 480GB Entry SATA 6Gb Hot Swap SSD, 4XB7A38277, ThinkSystem 3.5" Multi Vendor 960GB Entry SATA 6Gb Hot Swap SSD, 4XB7A38278, ThinkSystem HHHL Kioxia CM5-V 1.6TB Mainstream NVMe PCIe3.0 x4 Flash Adapter, 4XB7A38234, ThinkSystem HHHL Kioxia CM5-V 3.2TB Mainstream NVMe PCIe3.0 x4 Flash Adapter, 4XB7A38237, ThinkSystem HHHL Kioxia CM5-V 6.4TB Mainstream NVMe PCIe3.0 x4 Flash Adapter, 4XB7A38240, Removed the vendor column from the memory options table - the vendor mixing rule no longer applies -, The server now supports high-performance processors with TDP values up to 280W and core frequencies up to 3.7 GHz, New feature codes and descriptions for Middle and Rear Backplanes -, Added information about the use of the 280W processor and limits on Fibre Channel and networking adapters -, Updated the ASHRAE A3 & A4 requirements -, The server now supports up to 28 NVMe drives without PCIe lane oversubscription -, PM983 NVMe drives now support hot-swap functionality with the latest UEFI firmware, ThinkSystem Intel I350 1GbE RJ45 4-port OCP Ethernet Adapter, 4XC7A08277, The use of M.2 drives requires the performance fans be installed -, Updated the OCP support table with additional drive bay configuration support -, Support for PCIe Ethernet and InfiniBand adapters -, ThinkSystem Broadcom 57416 10GBASE-T 2-Port PCIe Ethernet Adapter, 7ZT7A00496, ThinkSystem Mellanox ConnectX-6 HDR100 QSFP56 2-port PCIe InfiniBand Adapter, 4C57A14178, ThinkSystem Mellanox ConnectX-6 HDR QSFP56 1-port PCIe 4 InfiniBand Adapter, 4C57A15326, ThinkSystem Mellanox ConnectX-6 HDR100 QSFP56 1-port PCIe InfiniBand Adapter, 4C57A14177, Additional cooling requirements with the use of the HDR and HDR100 adapters -, 750W Titanium Hot-Swap Power Supply temporarily withdrawn -, The following flash storage adapters are now withdrawn from marketing -, ThinkSystem HHHL Toshiba CM5-V 1.6TB Mainstream NVMe PCIe 3.0 x4 Flash Adapter, 4XB7A08520, ThinkSystem HHHL Toshiba CM5-V 3.2TB Mainstream NVMe PCIe 3.0 x4 Flash Adapter, 4XB7A08521, Temporarily removed the Micron 5300 drives - they are planned for December for the SR655, The following network adapters are now supported -, ThinkSystem I350-F1 PCIe 1Gb 1-Port SFP Ethernet Adapter, 7ZT7A00533, ThinkSystem I350-T2 PCIe 1Gb 2-Port RJ45 Ethernet Adapter, 7ZT7A00534, ThinkSystem I350-T4 PCIe 1Gb 4-Port RJ45 Ethernet Adapter, 7ZT7A00535, ThinkSystem Intel X710-DA2 PCIe 10Gb 2-Port SFP+ Ethernet Adapter, 7ZT7A00537, IPMI over LAN is disabled by default, but can be enabled in CTO orders -. Solid-state drives (SSDs) offer more reliability than traditional mechanical HDDs for greater uptime. The SR655 offers numerous features to boost performance, improve scalability and reduce costs: The SR655 provides many features to simplify serviceability and increase system uptime: Systems management features simplify local and remote management of the SR655: The SR655 offers the following energy-efficiency features to save energy, reduce operational costs, and increase energy availability: The following figure shows the front of the server. https://lenovopress.com/servers/options/ssdadapter. Lenovo SR655 AMD EPYC 7502P (32C 2.5GHz 128MB Cache/180W) 32GB (1x32GB 2Rx4 3200MHz RDIMM) No Backplane SATA 1x750W … (7Z01A02HEA) Kod: 7Z01A02HEA. With up to 64 cores per processor and support for the new PCIe 4.0 standard for I/O, the SR655 offers the ultimate in single-socket server performance. The following table lists the available external SAS tape backup options. The previous riser kits (4XH7A09840 or 4XH7A09842, now withdrawn) are not supported. Technical Tip for SR635/SR655 System fan speed ramps up after BMC update The built-in ASPEED AST2500 baseboard management controller (BMC) continuously monitors system parameters, triggers alerts, and performs recovery actions in case of failures to minimize downtime. If one or more GPUs are installed, then the maximum number of flash power modules and 930-8e adapters is 3. Adapters supported by the server are listed in the SAS adapters for external storage section. Lenovo ThinkSystem SR655 Server Product Guide The Lenovo ThinkSystem SR655 is a 1-socket 2U server that features the new AMD EPYC 7002 "Rome" family of processors. Move existing physical & virtual workloads easily, or determine technical requirements to support increased workloads while maximizing performance. For details about supported drives, adapters, and cables, see the following Lenovo Press Product Guides: Lenovo offers the ThinkSystem DE Series and ThinkSystem DM Series external storage systems for high-performance storage. The Lenovo ThinkSystem SR665 is a 2-socket 2U server that features the AMD EPYC 7002 "Rome" family of processors. Pointing Device USB - Russian 441 RoHS v2, ThinkSystem Keyboard w/ Int. For CTO orders, the cable kit is not required; the cable and brackets are automatically included in the order. The SR655 supports hot-swap drives installed in the middle of the server chassis. Optional service upgrades are available through Lenovo Services: 4-hour or 2-hour response time, 6-hour fix time, 1-year or 2-year warranty extension, software support for Lenovo hardware and some third-party applications. With 3200 MHz memory, the server supports a 3200 MHz memory bus speed at 1 DIMM per channel (DPC) and 2933 MHz at 2 DPC. SED support by RAID controllers is provided using the built-in MegaRAID SafeStore functionality of the adapter. Lenovo XClarity Energy Manager offers the following capabilities: Note: In the SR655, system power capping function is not supported on Lenovo XClarity Energy Manager. For more information, refer to the Capacity Planner web page:http://datacentersupport.lenovo.com/us/en/solutions/lnvo-lcp. * The 16TB drive is not supported in the mid drive bays. The transfer speed of following ports will vary and, depending on many factors, such as the processing speed of the host device, file attributes and other factors related to system configuration and your operating environment, will be slower than theoretical speed. With 6 GPUs installed, slots 1, 2, 4, 5, 7, 8 are x16 slots used by the GPUs. Up to two hot-swap redundant AC power supplies (all 80 PLUS Platinum certification): 550 W, 750 W, 1100 W and 1600 W AC options, supporting 220 V AC. The M.2 SATA RAID Boot Adapter supports RAID-1 which enables two installed M.2 drives to be configured as a redundant pair. Power-on password, administrator's password, Trusted Platform Module (TPM), supporting TPM 2.0. servers :: thinksystem :: sr655 Lenovo Data Center Support - Lenovo Support ZA ... Lenovo Inc. View View. Parts that are determined to be customer-replaceable units (CRUs) do not include onsite labor under base warranty. ), height: 87 mm (3.4 in. The choice of riser also determine which rear drive bays are possible, as listed in the following table. NVIDIA P620 GPUs: A thermal kit is not required when installing NVIDIA Quadro P620 GPUs. Diagnostics for memory test, hard disk drive test, and RAID log collection. Pointing Device USB - Thai 191 RoHS v2, ThinkSystem Keyboard w/ Int. Available offerings include: Premier Support provides a Lenovo-owned customer experience and delivers direct access to technicians skilled in hardware, software, and advanced troubleshooting, in addition to the following: Services are available to meet the on-site response time targets that match the criticality of your systems. The Lenovo ThinkSystem SR655 has set a new one-node 1-socket performance world record with the SPECmpiM_base2007 metric from the MPI M2007 suite of the SPEC MPI 2007 Benchmark. Pointing Device USB - Italian 141 RoHS v2, ThinkSystem Keyboard w/ Int. For more information, see Support tip HT509177. See the Operating environment section for details. The server has 36 drive bays in total, however up to 32 drives are supported in a configuration. From a service and support standpoint, Lenovo TruDDR4 memory automatically assumes the system warranty, and Lenovo provides service and support worldwide. The following table summarizes the rail kit features and specifications. With 8 GPUs installed, all rear PCI slots (slots 1-8) are used by the GPUs. Drives can be all SAS, all SATA, or all NVMe, or combinations of all three (not in the same RAID array, if configured). With up to 64 cores per processor and support for the new PCIe 4.0 standard for I/O, the SR655 offers the ultimate in single-socket server performance. When ordering GPUs as part of a CTO configuration, the necessary cooling features are automatically selected as part of the order. Our highly experienced team of finance professionals operates in a work culture that emphasizes the importance of providing outstanding customer service. 280W processor support: There are some restrictions regarding the use of some OCP adapters with a 280W processor installed due to thermal restrictions. Lenovo Managed Services provides continuous 24x7 remote monitoring (plus 24x7 call center availability) and proactive management of a your data center using state of the art tools, systems, and practices by a team of highly skilled and experienced Lenovo services professionals. For field upgrades, the option part numbers may include the upgraded components when they are needed, or you may need to order the performance fans separately. The SR655 server has six 60 mm hot-swap fans and either 5 or 6 fans are standard depending on the configuration. For more information, see the ARS page, https://lenovopress.com/lp1266-reduce-e-waste-and-grow-your-bottom-line-with-lenovo-ars. This document summarizes the SPECaccel benchmark result for the ThinkSystem SR655 that was published on August 7, 2019. The Lenovo ThinkSystem SR655 achieves the world’s best VMmark3 performance results for a one-processor server in the two-node VMmark3 category. * Backplanes are available as part numbers for field upgrades using upgrade kits, as described in the Field upgrades section below. A total of up to 9 PCIe 4.0 slots (8 with rear access, 1 internal for a RAID adapter) plus a slot dedicated to the OCP adapter. Ensure the memory installed is at least the same speed as the memory bus of the selected processor. Pointing Device USB - French 189 RoHS v2, ThinkSystem Keyboard w/ Int. The adapters that this applies to are as follows: The power module installation kit list listed in the following table. deep without a CMA, or at least 1200 mm (47.24 in.) For CTO orders, the components in the installation kit are automatically derived when you select the RAID adapter. Supports M.2 drives for convenient operating system boot functions or data storage. The document lists the result, summarizes the major components of the … For more information, see the list of Product Guides in the UPS category: The Lenovo ThinkSystem SR645 utilizes a combination of two AMD EPYC 7002 CPUs in a compact 1U rack server form factor that results in extreme CPU core and memory density. For server configurations, the inclusion of a power cord is model dependent. Capacity for up to 32x 2.5” low-latency NVMe drives that pairs well with the demands of low-latency, high-bandwidth storage such as clustered SAN solutions and software-defined storage. Your data stays safely on your premises, in your hands. ThinkSystem If you are unsure what you need, please refer to your SR655 manual or data sheet. Follow the required installation order installing the larger DIMMs first. The following table shows the supported combinations when the server is configured with a 3.5-inch chassis (where the front drive bays are 3.5-inch). Lenovo XClarity Energy Manager is an optional software component that is licensed on a per managed node basis, that is, each managed server requires a license. Notes: 1. The server does not supports any internal backup units, such as tape drives or RDX drives. This document summarizes the TPCx-IoT benchmark result for the ThinkSystem SR655 that was published on September 18, 2019. Three-year or one-year (model dependent) customer-replaceable unit and onsite limited warranty with 9x5 next business day (NBD). High-efficiency power supplies with 80 PLUS Platinum and Titanium certifications. This document summarizes the the SPEC CPU2017 benchmark result for the ThinkSystem SR655 that was published on August 7, 2019. ThinkSystem SR655 is a multi-GPU optimized rack server, with support for up to 6 single-wide GPUs providing 200% more workload acceleration in AI, SDI and VDI instances. * The use of 32 lanes with Riser 1 or the use of Riser 3 imposes restrictions on the use of the onboard SATA controller or the use of the M.2 Module or both. http://datacentersupport.lenovo.com. The high-level architectures provided by the assessment service are turned into low level designs and wiring diagrams, which are reviewed and approved prior to implementation The implementation plan will demonstrate an outcome-based proposal to provide business capabilities through infrastructure with a risk-mitigated project plan. What Lenovo ThinkSystem SR655 memory speed is supported? The 16TB drives cannot be installed in the mid drive bays -. † AnyBay bays support SAS or SATA or NVMe drives. You can use the buttons to view various features and use mouse gestures to rotate and zoom in. ThinkSystem DB Series SAN Switches and Directors: Interactive 3D Tour of the ThinkSystem SR655: Lenovo Press video walk-through of the ThinkSystem SR655: Lenovo Hardware Installation & Removal Videos on the SR655: Lenovo ThinkSystem SR655 product publications: Updated the maximum internal storage values -, ThinkSystem 3.5" 18TB 7.2K SAS 12Gb Hot Swap 512e HDD, 4XB7A38266, ThinkSystem 3.5" 18TB 7.2K SATA 6Gb Hot Swap 512e HDD, 4XB7A38130, ThinkSystem 2.5" PM1645a 6.4TB Mainstream SAS 12Gb Hot Swap SSD, 4XB7A17065, ThinkSystem 3.5" PM1645a 6.4TB Mainstream SAS 12Gb Hot Swap SSD, 4XB7A17068, Updated table of processor and thermal requirements for GPUs -, No processor restriction for most GPU configurations, ThinkSystem 32GB TruDDR4 3200 MHz (2Rx8 1.2V) RDIMM-A, 4ZC7A15123, ThinkSystem NVIDIA A100 40GB PCIe Gen4 Passive GPU, 4X67A13135, New Riser 2 V2 and Riser 3 V2 Kits replacing the existing kits -, ThinkSystem SR655 x16/x8/x8 PCIe Riser 2 FH/LP Kit V2, 4XF7A72372, ThinkSystem SR655 x16/x16 PCIe Riser 3 Kit V2, 4XF7A72373. The server supports a total of up to 9 PCIe 4.0 slots (8 with rear access, 1 internal for a RAID adapter or HBA) plus a dedicated OCP 3.0 SFF slot for networking. The Lenovo ThinkSystem SR655 has set a new 1-node 1-socket performance world record with the SPECaccel_ocl_base metric from the SPEC ACCEL Benchmark. Supports up to 28x NVMe drives without oversubscription of PCIe lanes (1:1 connectivity), or up to 32x NVMe drives with a 2:1 oversubscription. * For 0U PDU support, the rack must be at least 1100 mm (43.31 in.) The table below lists the supported AMD processors. The Lenovo ThinkSystem SR635 is a 1-socket 1U server that features the new AMD EPYC 7002 "Rome" family of processors. 280W processor support: There are some restrictions regarding the use of some drive configurations with a 280W processor installed due to thermal restrictions. The shipping dimensions (cardboard packaging) are as follows: Electrical specifications for AC power supplies: Electrical specifications for DC input power supply: The ThinkSystem SR655 server complies with ASHRAE Class A2 specifications, and depending on the hardware configuration, also complies with ASHRAE Class A3 and Class A4 specifications. Lenovo ThinkSystem SR650 is an ideal 2-socket 2U rack server for small businesses up to large enterprises that need industry-leading reliability, management, and security, as well as maximizing performance and flexibility for future growth.