Intel Xeon w5-3535X socket: LGA 4677
The Intel Xeon w5-3535X uses LGA 4677, the LGA workstation socket for Sapphire Rapids Xeon W with W790 chipsets, DDR5 RDIMM memory and 112 PCIe Gen5 lanes. The 20-core chip at 300 W suits single-socket workstation boards.
- Socket
- LGA 4677
- Launched
- August 2024
- Cores and threads
- 20 and 40
- Base power
- 300 W
- Codename
- Sapphire Rapids
- Segment
- Workstation
- Family
- Intel Xeon W
- Clocks
- 2.9 / 4.8 GHz
Intel Xeon w5-3535X specifications
| Cores | 20 |
|---|---|
| Threads | 40 |
| Core architecture | Golden Cove (P-cores only, chiplet) |
| Clocks | 2.9 GHz base, up to 4.8 GHz boost |
| Cache | 52.5 MB Intel Smart Cache |
| Processor base power (TDP) | 300 W |
| Maximum turbo power | 360 W |
| Manufacturing process | Intel 7 (10 nm) |
| Memory support | DDR5-4800 RDIMM with ECC, 8 channels, up to 4 TB |
| PCI Express | PCIe 5.0 x112 |
| Integrated graphics | None |
| Multiplier | Unlocked |
| ECC memory | Yes |
| Package | FCLGA4677 (77.5 by 56.5 mm) |
Motherboard and chipset compatibility
Intel Xeon w5-3535X 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 w5-3535X is
The Xeon w5-3535X is a 20-core and 40-thread workstation processor that Intel launched in August 2024 as the Sapphire Rapids-112L refresh for single-socket workstations. Twenty Golden Cove Performance-cores with Hyper-Threading and no Efficient-cores give 40 threads at 2.9 GHz base and up to 4.8 GHz boost. Cache is 52.5 MB of Smart Cache. Processor base power is 300 W with 360 W turbo, which needs workstation air or liquid cooling.
The unlocked X suffix allows multiplier and memory tuning where the W790 board enables it. Eight-channel DDR5-4800 RDIMM up to 4 TB with ECC feeds 20 cores plus GPUs from shared board memory. Up to 112 Gen5 lanes serve multiple GPUs, NVMe RAID and 10 GbE networking from one socket.
Midrange expert workstations fit here. Twenty cores keep CAD, rendering and data prep together without dual-socket complexity. Buyers who need 44 cores for larger scenes should take the Intel Xeon w9-3575X with 97.5 MB cache instead, since this w5 prioritizes balanced power over maximum threads.
Socket and motherboard compatibility
The w5-3535X fits LGA 4677 on W790 workstation boards with 300 W delivery. Boards accept W-3400 plus W-3500 refresh SKUs with a BIOS that lists the part. The 77.5 by 56.5 mm FCLGA4677 package uses the E1A carrier and workstation ILM.
Memory is DDR5-4800 RDIMM with ECC in 8 channels up to 4 TB. Population is 1 DIMM per channel at 4800 MT per s or 2 per channel at 4400 MT per s. XMP-compatible RDIMM overclocking is available on X SKUs where the board enables it.
Workstation shoppers compare W-3500 parts on cores and cache. The w5-3535X opens the 8-channel family below 32-core twins. The Socket vs chipset: what decides whether a CPU works guide explains why workstation compatibility lives in vendor lists.
Memory, PCIe and cooling
DDR5-4800 RDIMM with ECC in 8 channels up to 4 TB is the W-3500 standard. Large scenes plus datasets should be sized together, since 20 cores can feed on bandwidth. Matched octets are preferred for full width.
PCIe gives 112 Gen5 lanes from the CPU plus 28 Gen3 and Gen4 lanes from W790 for GPUs, NVMe and LAN. Splits serve dual GPUs plus RAID on expert boards. Fixed wiring means accelerator plans must match the manual.
Cooling is workstation 300 W with vendor-qualified air or liquid to 360 W peaks. No retail box cooler applies to tray workstation supply. Inlet control and torque sequence preserve repeat 4.8 GHz behavior.
Upgrade paths
LGA allows workstation moves within the vendor list, such as to higher-core W-3500 parts with stronger cooling. Memory and NVMe can also grow. BIOS must support the target.
The larger leap is to 44-core w9 for maximum threads. A working w5-3535X serves expert desks for years. Server dual-socket platforms use different sockets.
Frequently asked questions
What socket does the Xeon w5-3535X use?
It uses LGA 4677 on W790 workstation boards. A BIOS that lists Sapphire Rapids refresh is required.
How many cores does the Xeon w5-3535X have?
Twenty cores and 40 threads at 2.9 GHz base and up to 4.8 GHz boost, with 52.5 MB of cache at 300 W.
What memory does the w5-3535X support?
DDR5-4800 RDIMM with ECC in 8 channels up to 4 TB. XMP RDIMM tuning is available on X SKUs.
Can the w5-3535X be upgraded?
Yes, to higher-core W-3500 parts on the same board where power, cooling and BIOS allow.
Sources and verification
- Intel Xeon w5-3535X 20 cores LGA-4677 specs cache power (Newegg)
- Intel Xeon W-3500 and W-2500 Sapphire Rapids Refresh lineup W790 DDR5 (Wccftech)
- Intel Xeon W W790 chipset DDR5 workstations memory lanes (Kingston)
Facts last checked against these sources on . Page last edited on .