Request a quote — built to order from tested, warrantied stock.
The Dell PowerEdge T640 is a refurbished 5U Rackable Tower server (14G) for the 2nd Generation Intel Xeon Scalable, DDR4 · up to 3072 GB · 24 DIMM slots · up to 2933 MT/s · 6 channels per CPU · ECC. Drive layouts: 8x 3.5-inch SAS/SATA/SSD; 18x 3.5-inch SAS/SATA/SSD; 32x 2.5-inch SAS/SATA/SSD; 16x 2.5-inch SAS/SATA/SSD; 16x 2.5-inch SAS/SATA/SSD + 8x NVMe. Every unit is tested, warrantied and shipped from Canada; configure it online with parts that are checked for compatibility.
Best for: ai, storage.
| Form factor | 5U Rackable Tower |
|---|---|
| Generation | 14G |
| CPU | 2 socket(s) · 2nd Generation Intel Xeon Scalable · LGA3647 · up to 28 cores per CPU · max 205 W TDP |
| Memory | DDR4 · up to 3072 GB · 24 DIMM slots · up to 2933 MT/s · 6 channels per CPU · ECC |
| Drive bays | 8x 3.5-inch SAS/SATA/SSD; 18x 3.5-inch SAS/SATA/SSD; 32x 2.5-inch SAS/SATA/SSD; 16x 2.5-inch SAS/SATA/SSD; 16x 2.5-inch SAS/SATA/SSD + 8x NVMe |
| Storage controllers | H330, H730P, H740P, HBA 330, 12Gb SAS HBA · boot: BOSS (M.2 SATA or PCIe x1 devices), IDSDM (microSD 16GB, 32GB, 64GB), vFlash (microSD 16GB) · M.2 boot |
| PCIe | Gen 3.0 · 9 slots · 5× x16 |
| Networking | 2x 10GbE (10GBASE-T) Broadcom 57416 |
| GPU | up to 8 GPUs · 4 double-width |
| Power | 2400W Platinum, 2000W Platinum, 1600W Platinum, 1100W Platinum, 1100W Gold, 750W Platinum/Titanium, 750W Platinum, 750W Platinum, 495W Platinum · redundant · hot-swap |
| Management | iDRAC9 · iDRAC9 Express |
| Cooling | ASHRAE A4 · hot-swap fans |
| Dimensions | 443.23 × 217.7 × 707.8 mm |
Real parts from our catalog for this chassis, priced from live market listings and vendor offers:
Chassis pricing is quoted by our team; component prices come from live market listings and vendor offers and are refreshed nightly. Lines without market evidence are quoted by our team.
If you encounter a memory error after changing CPUs, first ensure that the memory modules are correctly seated and populated in the appropriate slots. Check for any bent pins on the CPU socket, as this could indicate a problem. If issues persist, consider isolating the components to determine if the memory or CPU is faulty. [community thread]
The T640 server is not compatible with H100 GPUs due to its insufficient power capacity and PCIe generation limitations. The server can only support GPUs with a maximum power consumption of 300W, while the H100 requires at least 350W and is designed for Gen 5 PCIe, which the T640 does not support. [community thread]
Rolling back directly to version 3.21.21.21 from 6.10.30.20 is not recommended due to compatibility issues. It is advisable to downgrade incrementally through several intermediate versions to ensure stability. [community thread]
The blinking DS5 and DS6 LEDs typically suggest a hardware issue. To troubleshoot, ensure that the server has the minimum configuration required to POST, which includes one CPU in socket 1, one memory module in socket A1, and at least one power supply unit. [community thread]
The LED pattern suggests a potential 5V BP1 failure. Start by draining flea power by disconnecting all cables and holding the power button for 20 seconds, then wait for 3 minutes. After that, reseat the backplane cable connections and check for any damage, then attempt to power on the server with one power supply connected. [community thread]