Intel Xeon 658X socket: LGA 4710
The Intel Xeon 658X uses the LGA 4710 socket. It is a 24 core Granite Rapids server processor with a 3.0 GHz base frequency and boost to 4.9 GHz, plus 8 channel DDR5 memory and 128 lanes of PCI Express 5.0.
- Socket
- LGA 4710
- Launched
- February 2026
- Cores and threads
- 24 and 48
- Base power
- 250 W
- Codename
- Granite Rapids
- Segment
- Server
- Family
- Intel Xeon
- Clocks
- 3.0 / 4.9 GHz
Intel Xeon 658X specifications
| Cores | 24 |
|---|---|
| Threads | 48 (with Hyper-Threading) |
| Clocks | 3.0 GHz base, up to 4.9 GHz boost (4.3 GHz all-core) |
| Cache | 144 MB |
| Processor base power (TDP) | 250 W |
| Maximum turbo power | 300 W |
| Manufacturing process | Intel 3 |
| Memory support | DDR5 up to 6400 MT/s, 8 channels, up to 4 TB |
| PCI Express | PCIe 5.0, up to 128 lanes |
| Integrated graphics | None |
| ECC memory | Yes |
| Package | FCLGA4710 with carrier E2B (77.5 mm x 56.5 mm) |
| Scalability | 1S (1 socket only) |
| Launch price | $1869 (Intel RCP at launch) |
Motherboard compatibility
Intel Xeon 658X needs a motherboard with a LGA 4710 socket. Chipset by chipset data for this codename is not recorded yet. See the LGA 4710 chipset list and the board maker's CPU support list.
LGA 4710 at a glance
| Type | LGA, 4,710 contacts |
|---|---|
| Package size | n/a |
| Introduced | June 2024 |
| Memory | DDR5, 8 channels |
| Cooler mounting holes | Board specific (server heatsink) |
What the Xeon 658X is
The Xeon 658X is a 24 core server processor from the Xeon 6 family under the codename Granite Rapids. All 24 cores are Performance-cores, and with Hyper-Threading the part presents 48 threads. The base frequency is 3.0 GHz with maximum turbo to 4.9 GHz through Turbo Boost Max 3.0, 4.7 GHz through Turbo Boost 2.0, and 4.3 GHz all-core turbo. The shared last level cache totals 144 MB. Intel aims the part at content creation, engineering simulation, software builds, and virtualization hosts that want a high clock ceiling with full platform I/O.
Intel rates the processor base power at 250 W with maximum turbo power at 300 W. The part is built on Intel 3 and carries no integrated graphics, so display output or GPU compute needs a discrete card. Scalability is 1S, which means each system uses exactly one Xeon 658X. ECC memory is supported, and the feature set includes AVX-512 with two FMA units per core plus AMX with FP16 acceleration for AI math. The X suffix marks an unlocked multiplier for tuning on boards that permit it.
The processor launched in the first quarter of 2026 with tray pricing at 1869 dollars Intel recommended customer price. Intel announced the Xeon 600 family in February 2026, and the 658X is one of five SKUs sold boxed at retail for custom builds alongside distribution through hardware partners. Independent testing on an Asus W890 workstation board confirmed the 3.0 GHz base, 4.9 GHz boost, 8 channel DDR5-6400 memory, and 128 PCIe 5.0 lanes in a shipping system.
Socket and motherboard compatibility
The Xeon 658X fits the LGA 4710 socket, a land grid array with 4,710 contacts that also hosts Sierra Forest parts. The package is FCLGA4710 with carrier E2B. Single socket workstation and server boards built for the Granite Rapids platform generation are the natural match, including W890 boards such as the Asus Pro WS series used in published reviews. Compatibility still follows the board vendor CPU support list for each model, including the minimum BIOS revision that carries Granite Rapids microcode.
The socket file for this site carries no desktop chipset groups, so there is no retail chipset pick to copy. The Socket vs chipset: what decides whether a CPU works explains how socket fit differs from chipset and firmware support, and that distinction matters here because workstation boards qualify processors individually. Buyers should confirm the Xeon 658X on the vendor list with the planned BIOS revision before ordering memory or cooling.
Because the part is 1S only, dual socket boards are not an option. Cooling follows the board vendor list for 250 W parts, which in practice means large tower air coolers with server airflow or liquid cooling qualified per chassis. Boxed retail units ship without a thermal solution. System integrators size cooling for the 300 W maximum turbo power so the processor can hold boost under sustained all core load.
Memory, PCIe and cooling
The memory controller supports DDR5 up to 6400 MT/s in 8 channels with up to 4 TB per socket. ECC is supported, and RDIMM types fit the enterprise use case. Final speed follows DIMM population per channel, so two DIMMs per channel lowers the rate and vendors publish tested layouts for full capacity. Eight channels give 409.6 GB/s of theoretical bandwidth at DDR5-6400, which feeds the 24 cores in rendering, compression, and simulation.
For I/O the chip provides PCI Express 5.0 with up to 128 lanes for multiple GPUs, NVMe storage, and high speed networking at full Gen 5 bandwidth. With no UPI links active, all traffic stays inside the single socket or moves over PCIe and CXL 2.0. The platform also carries DMI 4.0 to the board controller for management and onboard devices. Published testing paired the part with 128 GB of ECC DDR5 and Gen 5 NVMe storage on a W890 board without I/O limits.
Power and cooling center on 250 W base with 300 W maximum turbo, 99 degrees C maximum junction from the digital sensor, and 75 degrees C maximum case temperature. Firmware sets sustained and burst limits, and rack planners should budget power and airflow for continuous load at full turbo rather than base power alone. The 77.5 mm x 56.5 mm package uses the server carrier and retention mechanism of the board, not a desktop socket lever and clip.
Upgrade paths
Within LGA 4710 the path up is a 28 core Xeon 674X or a 32 core Xeon 676X on the same board where power allows. Those parts keep 8 memory channels, 144 MB of cache or more, and 128 PCIe lanes while adding cores for heavily threaded work. The vendor list shows which higher parts the board and BIOS revision accept, and the heatsink may need to change for the higher envelope.
A larger change of platform means a new board and new memory population. The LGA 7529 platform serves the biggest Granite Rapids server configurations with more memory channels, and reaching it requires different boards, heatsinks, and firmware rather than a drop in replacement. Buyers moving from a desktop socket should plan for workstation chassis, high capacity power, and ECC RDIMM memory rather than desktop DIMMs.
For systems built around the 658X, the board, memory, and I/O define the ceiling. Populating all 8 memory channels and spreading GPUs and NVMe drives across the 128 lanes keeps the 24 cores fed. When thread count limits the workload, a same socket part with more cores is the next step without changing memory or boards.
Frequently asked questions
What socket does the Intel Xeon 658X use?
The Intel Xeon 658X uses LGA 4710. It fits single socket workstation and server boards built for Granite Rapids parts. Always confirm the part on the board vendor CPU support list.
What memory does the Xeon 658X support?
DDR5 up to 6400 MT/s in 8 channels up to 4 TB with ECC. Final speed follows the DIMM type and population per channel, so check the vendor memory guide for the planned capacity.
How many PCIe lanes does the Xeon 658X provide?
Up to 128 lanes of PCI Express 5.0 for multiple GPUs, NVMe storage, and high speed networking. The part has no active UPI links and runs in single socket systems only.
Can two Xeon 658X processors work together?
No. Scalability is 1S, so each system uses exactly one Xeon 658X. Workloads that need more cores move to a higher core part on the same socket or to a larger platform.
Sources and verification
Facts last checked against these sources on . Page last edited on .