Intel Xeon w5-2565X socket: LGA 4677
The Intel Xeon w5-2565X uses LGA 4677, the LGA workstation socket for Sapphire Rapids Xeon W with W790 chipsets, DDR5 RDIMM memory and 64 PCIe Gen5 lanes. The unlocked 18-core chip at 240 W suits mainstream workstation boards.
- Socket
- LGA 4677
- Launched
- August 2024
- Cores and threads
- 18 and 36
- Base power
- 240 W
- Codename
- Sapphire Rapids
- Segment
- Workstation
- Family
- Intel Xeon W
- Clocks
- 3.2 / 4.8 GHz
Intel Xeon w5-2565X specifications
| Cores | 18 |
|---|---|
| Threads | 36 |
| Core architecture | Golden Cove (P-cores only, monolithic) |
| Clocks | 3.2 GHz base, up to 4.8 GHz boost |
| Cache | 37.5 MB Intel Smart Cache |
| Processor base power (TDP) | 240 W |
| Manufacturing process | Intel 7 (10 nm) |
| Memory support | DDR5-4800 RDIMM with ECC, 4 channels |
| PCI Express | PCIe 5.0 x64 |
| Integrated graphics | None |
| Multiplier | Unlocked |
| ECC memory | Yes |
| Package | FCLGA4677 (77.5 by 56.5 mm) |
Motherboard and chipset compatibility
Intel Xeon w5-2565X needs a motherboard with a LGA 4677 socket. The table shows which chipset series accept it.
| Series | Chipsets | Support |
|---|---|---|
| W790 workstation | W790 | 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 4677.
LGA 4677 at a glance
| Type | LGA, 4,677 contacts |
|---|---|
| Package size | 77.5 × 56.5 mm |
| Introduced | 2023 |
| Memory | DDR5-4800 Registered DIMMs with ECC, 8 channels up to 4 TB on W-3500 and W-3400, 4 channels on W-2500 and W-2400 |
| Cooler mounting holes | Board specific (workstation heatsink) |
What the Xeon w5-2565X is
The Xeon w5-2565X is an 18-core and 36-thread workstation processor that launched in August 2024 as the unlocked Sapphire Rapids-64L refresh for mainstream workstations. Eighteen Golden Cove Performance-cores with Hyper-Threading and no Efficient-cores give 36 threads at 3.2 GHz base and up to 4.8 GHz boost. Cache is 37.5 MB of Smart Cache. Processor base power is 240 W with tuning headroom on X SKUs.
The unlocked X suffix allows multiplier and memory tuning where the W790 board enables it. Four-channel DDR5-4800 RDIMM with ECC feeds 18 cores plus GPUs from board memory. Up to 64 Gen5 lanes serve GPUs and NVMe RAID from one socket without 8-channel board cost.
Mainstream expert workstations with high base clocks fit here. The 3.2 GHz base sustains interactive CAD while 18 cores handle background tasks. Buyers who need 22 cores for larger scenes should take the Intel Xeon w7-2575X with 45 MB cache instead, since this w5 prioritizes clocks over thread count.
Socket and motherboard compatibility
The w5-2565X fits LGA 4677 on W790 mainstream boards with 240 W delivery. Boards accept W-2400 plus W-2500 refresh SKUs with a BIOS that lists the part. The FCLGA4677 package uses the E1A carrier.
Memory is DDR5-4800 RDIMM with ECC in 4 channels. XMP-compatible tuning is available on X SKUs where enabled. Population is 1 DIMM per channel at 4800 MT per s or 2 per channel at 4400 MT per s.
W-2500 shoppers compare unlocked X parts on cores and cache. The w5-2565X trails 22-core twins on threads. The Socket vs chipset: what decides whether a CPU works guide explains vendor lists.
Memory, PCIe and cooling
DDR5-4800 RDIMM with ECC in 4 channels is the W-2500 standard. Models plus datasets should be sized together. Matched quartets are preferred.
PCIe gives 64 Gen5 lanes from the CPU plus 28 chipset lanes for GPUs, NVMe and LAN. Fixed splits mean plans must match the manual.
Cooling is workstation 240 W with vendor-qualified air or liquid. No retail cooler ships with tray supply.
Upgrade paths
LGA allows moves within the vendor list, such as to 22-core W-2500 parts with similar cooling. Memory and NVMe can also grow. BIOS must support the target.
The bandwidth leap is to 8-channel W-3500. A working w5-2565X serves expert desks for years.
Frequently asked questions
What socket does the Xeon w5-2565X use?
It uses LGA 4677 on W790 mainstream workstation boards. A BIOS that lists the refresh is required.
Is the Xeon w5-2565X unlocked?
Eighteen cores and 36 threads at 3.2 GHz base and up to 4.8 GHz boost, with 37.5 MB of cache at 240 W. The multiplier is unlocked.
What memory does the w5-2565X support?
DDR5-4800 RDIMM with ECC in 4 channels.
Can the w5-2565X be upgraded?
Yes, to higher-core W-2500 parts on the same board where power, cooling and BIOS allow.
Sources and verification
- Intel Xeon W-3500 and W-2500 Sapphire Rapids Refresh lineup table w5-2565X 18 cores (Wccftech)
- Intel Xeon W W790 chipset DDR5 workstations memory lanes (Kingston)
Facts last checked against these sources on . Page last edited on .