AMD Opteron 254 socket: Socket 940
The AMD Opteron 254 uses the Socket 940 socket. It is a 92 W single-core Troy server part at 2.8 GHz with 1 MB of L2 cache for dual-processor racks.
- Socket
- Socket 940
- Launched
- August 2005
- Cores and threads
- 1 and 1
- Default TDP
- 92 W
- Codename
- Troy
- Segment
- Server
- Family
- AMD Opteron
- Clocks
- 2.8 GHz
AMD Opteron 254 specifications
| Cores | 1 |
|---|---|
| Threads | 1 |
| Core architecture | Troy cores on 90 nm |
| Clocks | 2.8 GHz (no turbo) |
| Cache | 1 MB L2 |
| Default TDP | 92 W |
| Manufacturing process | 90 nm |
| Memory support | Registered DDR, two channels |
| PCI Express | PCIe from the board chipset |
| Integrated graphics | None |
| Multiplier | Locked |
| Package | Socket 940 (940-pin OPGA) |
Motherboard compatibility
AMD Opteron 254 needs a motherboard with a Socket 940 socket. Chipset by chipset data for this codename is not recorded yet. See the Socket 940 chipset list and the board maker's CPU support list.
Socket 940 at a glance
| Type | PGA, 940 contacts |
|---|---|
| Package size | 40 × 40 mm |
| Introduced | 2003 |
| Memory | Registered DDR, through the on-chip controller |
| Cooler mounting holes | Board specific (server heatsink) |
What the Opteron 254 is
The AMD Opteron 254 is a 2.8 GHz single-core server processor from August 2005. It runs one K8 core at 2.8 GHz with no turbo, so 1 core gives 1 thread. Cache is 1 MB of L2 on a 90 nm process. Power is rated at 92 W on Socket 940.
The 254 topped the Troy 200 series with registered DDR memory on a 1000 MT/s HyperTransport link at about 851 dollars launch price. It exists because dual-processor buyers wanted the fastest Troy single core with the full 1 MB cache.
Socket and motherboard compatibility
The 254 fits Socket 940 dual-processor server boards with a BIOS that lists late Troy parts. It suits performance racks qualified for 92 W parts with registered DDR slots. Check the server maker CPU list for the exact board and stepping. The Socket vs chipset: what decides whether a CPU works guide covers pairing rules.
Memory, PCIe and cooling
Memory is registered DDR in two channels through the on-chip controller.
HyperTransport at 1000 MT/s links the CPU to the chipset and other sockets. PCIe slots hang off the chipset.
Cooling uses vendor qualified server heatsinks for the 92 W envelope with directed airflow.
Upgrade paths
On Socket 940 the upgrade stays within Troy, as the 254 tops the 200 series. The AMD Opteron 252 at 2.6 GHz drops clocks with the same 1 MB cache. Beyond Socket 940 a move to Socket F needs new boards and DDR2 memory.
Frequently asked questions
What socket does the Opteron 254 use?
Socket 940, in dual-processor server boards with late Troy support.
How many cores does the Opteron 254 have?
One core and 1 thread at 2.8 GHz with 1 MB of L2 cache.
What memory works with the Opteron 254?
Registered DDR in two channels through the on-chip controller.
Sources and verification
Facts last checked against these sources on . Page last edited on .