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Lenovo ThinkSystem SR645 1U rack server, matte black front panel with drive bays and ports

Lenovo

Lenovo ThinkSystem SR645 1U rack server EPYC 7203 32GB DDR4 7D2X100DNA

SKU CH-69ME-AXS7F MPN 7D2X100DNA

1U rack server with AMD EPYC 7203 8-core CPU, 32GB DDR4, expandable to 8TB memory, no drives installed

  • WorkloadGeneral Purpose Server
  • TypeRack
  • Rack Height1U
  • Hot-swap Fans6 x Performance fans
  • CPU TypeAMD EPYC 7003 Series
  • CPU Speed7203 (2.80 GHz)
  • 1U rack form factor saves data-centre space
  • AMD EPYC 7203 8-core processor runs at 2.80 GHz
  • 32 GB DDR4 memory installed with 8 TB maximum capacity
  • 32 DIMM slots across two processors enable flexible memory scaling
  • Six hot-swap performance fans maintain cooling without downtime

ThinkSystem SR645 1U AMD EPYC 7203 server

The Lenovo ThinkSystem SR645 is a 1U rackmount server built for general-purpose workloads. It ships with a single AMD EPYC 7003 series 7203 processor running at 2.80 GHz with 8 cores and 64 MB L3 cache. The system includes 32GB of DDR4 memory and supports up to 8TB maximum capacity across 32 DIMM slots.

Compatibility checklist for your rack and storage

Verify that your rack provides 1U of space and sufficient airflow for six hot-swap performance fans. The chassis uses a SATA/SAS backplane for 2.5-inch drive bays; no drives are installed, so you must supply compatible SATA or SAS storage. Confirm your power infrastructure can deliver 1100W to the server's power supplies.

Suited for memory-heavy tasks not GPU-dependent

This configuration suits virtualisation hosts, database nodes or compute clusters that benefit from eight memory channels per processor and high DIMM counts. It is not for buyers who need GPU acceleration, as no GPU is included and the 1U form factor limits expansion. Organisations requiring dual-processor performance from day one should look at a two-socket configuration.

Pluspunten

  • 1U rack form factor saves data-centre space
  • AMD EPYC 7203 8-core processor runs at 2.80 GHz
  • 32 GB DDR4 memory installed with 8 TB maximum capacity
  • 32 DIMM slots across two processors enable flexible memory scaling
  • Six hot-swap performance fans maintain cooling without downtime

Specificaties

BrandLenovo
SeriesThinkSystem SR645
Model7D2X100DNA
WorkloadGeneral Purpose Server
TypeRack
Rack Height1U
Hot-swap Fans6 x Performance fans
CPU TypeAMD EPYC 7003 Series
CPU Speed7203 (2.80 GHz)
CPU SocketSocket SP3
Number of CPU Cores8-Core Processor
Cache Memory64 MB L3 Cache
# of Processors Installed1
Installed Memory Size32GB
Memory TypeDDR4
Max Memory Capacity8TB
Memory Features32 DIMM slots with two processors (16 DIMM slots per processor). Each processor has 8 memory channels, with 2 DIMMs per channel (DPC). Lenovo TruDDR4 RDIMMs and 3DS RDIMMs are supported:
Performance+ RDIMMs: 1 DPC at 3200 MHz, 2 DPC at 3200 MHz
RDIMMs: 1 DPC at 3200 MHz, 2 DPC at 2933 MHz
3DS RDIMMs: 1 DPC at 2933 MHz, 2 DPC at 2666 MHz
Number of Memory Slots32
Hard Drive (Installed)No Hard Drive
HDD InterfaceSATA/SAS
SSD (Installed)No
Expansion SlotsOpen
Expansion BaysOption 2.5"; Open bay
Other portsFront: 1x USB 3.2 G1 (5 Gb/s) port, 1x USB 2.0 port (also for XCC local management), External diagnostics port, optional VGA port.
Rear: 3x USB 3.2 G1 (5 Gb/s) ports, 1x VGA video port, 1x RJ-45 1GbE systems management port for XCC remote management. Optional DB-9 COM serial port (installs in slot 3).
Internal: 1x USB 3.2 G1 connector for operating system or license key purposes
Operating SystemNo
Power Characteristics1100W
Dimensions1.7" x 17.3" x 30.4"
Weight44.6 lbs.
Verzendgewicht9.07 kg
Pakketafmetingen508 × 457 × 254 mm

Vragen over dit artikel

Does the Lenovo ThinkSystem SR645 7D2X100DNA include any drives or do I need to buy SATA or SAS drives separately?

No drives are installed. The chassis provides open 2.5-inch bays that accept SATA or SAS drives, so you must purchase storage separately.

The spec sheet lists DDR4 RDIMMs and 3DS RDIMMs at different speeds. Which memory type should I choose for the 7203 processor?

With one EPYC 7203 installed you have 16 slots across 8 channels. Standard RDIMMs run at 3200 MHz with one per channel or 2933 MHz with two per channel; 3DS RDIMMs run slower. Pick RDIMMs for the highest speed.

The headline figure is 8 TB maximum memory. What does that mean for a single 8-core 7203 CPU?

The 8 TB limit requires two processors. With the single 7203 you can populate 16 DIMM slots; the practical ceiling depends on the highest-capacity DDR4 RDIMMs available.

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