Intel Xeon X5677 socket: LGA 1366
The Intel Xeon X5677 uses the LGA 1366 socket. It is a 130 W quad core Westmere-EP server part at 3.466 GHz with Turbo Boost to 3.733 GHz and 12 MB of L3 cache for clock sensitive hosts.
- Socket
- LGA 1366
- Launched
- March 16, 2010
- Cores and threads
- 4 and 8
- Base power
- 130 W
- Codename
- Westmere-EP
- Segment
- Server
- Family
- Intel Xeon X
- Clocks
- 3.47 / 3.73 GHz
Intel Xeon X5677 specifications
| Cores | 4 |
|---|---|
| Threads | 8 |
| Core architecture | Westmere-EP cores on 32 nm |
| Clocks | 3.466 GHz base, 3.733 GHz Turbo Boost |
| Cache | 1 MB L2 (4 × 256 KB), 12 MB shared L3 |
| Processor base power (TDP) | 130 W |
| Manufacturing process | 32 nm |
| Memory support | DDR3 ECC triple channel |
| PCI Express | PCIe Gen 2 from the chipset |
| Integrated graphics | None |
| Multiplier | Locked |
| Package | LGA1366 |
Motherboard and chipset compatibility
Intel Xeon X5677 needs a motherboard with a LGA 1366 socket. The table shows which chipset series accept it.
| Series | Chipsets | Support |
|---|---|---|
| 5500 and 5520 server | 5500, 5520 | Works out of the box |
Board makers publish a CPU support list for every model. Check it for your exact board before buying. Chipset details for LGA 1366.
LGA 1366 at a glance
| Type | LGA, 1,366 contacts |
|---|---|
| Package size | n/a |
| Introduced | 2008 |
| Memory | DDR3 triple channel, up to 24 GB on desktop boards |
| Cooler mounting holes | 80 × 80 mm |
What the Xeon X5677 is
The Intel Xeon X5677 is a quad core Westmere-EP server processor that Intel launched on March 16, 2010 at 3.466 GHz with Turbo Boost to 3.733 GHz. Hyper-Threading gives eight threads from four Westmere cores, backed by 256 KB of L2 per core and 12 MB of shared L3 cache. Power is rated at 130 W on a 32 nm process with 1,170 million transistors.
The X5677 is the fastest Westmere-EP quad for clock sensitive databases at 130 W. Against the X5667 it adds base and turbo speed at higher power. ECC triple channel memory guards data on dual socket boards.
Memory is DDR3 triple channel with ECC.
Socket and motherboard compatibility
The Xeon X5677 fits LGA 1366 with 1366 lands. Intel 5500 and 5520 chipset boards boot it with BIOS 45 or later.
The socket table covers Westmere-EP natively. The Socket vs chipset: what decides whether a CPU works guide covers pairing rules.
Memory, PCIe and cooling
Memory is DDR3 ECC triple channel per socket.
Two QPI links scale to dual socket nodes, with PCIe Gen 2 from the chipset.
Cooling uses server heatsinks rated for 130 W.
Upgrade paths
On LGA 1366 there is no faster stock Westmere-EP quad, so the path is a six core such as the X5680 for threads, or Sandy Bridge E5. Keep the X5677 where clocks matter most.
Frequently asked questions
What socket does the Xeon X5677 use?
LGA 1366, the 1366-land package on 5500 and 5520 chipset boards with BIOS 45 or later.
How many cores does the Xeon X5677 have?
Four cores and eight threads at 3.466 GHz base with Turbo Boost to 3.733 GHz, with 256 KB of L2 per core and 12 MB of shared L3 cache.
What memory works with the Xeon X5677?
DDR3 ECC triple channel per socket.
Sources and verification
Facts last checked against these sources on . Page last edited on .