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Square green ceramic chip with gold contacts and silver heat spreader, LGA2066 socket form factor

Intel

Intel Core i9-7900X 10-core desktop processor

SKU CH-DK84-ZPJWJ MPN i9-7900X.

10-core desktop CPU with 20 threads, 3.3 GHz base and 4.3 GHz turbo, 13.75 MB L3 cache, 44 PCIe 3.0 lanes, DDR4-2666 support, 140 W TDP, LGA 2066 socket

  • Product nameCore i9-7900X
  • CPU cores10-Core
  • Maximum turbo clock4.3 GHz
  • TDP rating140 W
  • Processor classDesktop
  • Processor codenameSkylake
  • 10 cores and 20 threads accelerate multi-threaded workloads
  • 3 GHz max turbo frequency speeds single-threaded tasks
  • 44 PCIe 3.0 lanes enable high-bandwidth expansion
  • 140 W TDP defines thermal requirements for cooling
  • DDR4-2666 memory support delivers responsive system performance

10-core Skylake-X for X299 workstations

This processor targets workstations that need many threads for rendering, compilation or virtualisation. It fits the LGA-2066 socket and requires an Intel X299 chipset motherboard. The 10 cores and 20 threads handle parallel workloads that exceed mainstream desktop limits.

Sustained 140 W thermal envelope under load

At the 140 W TDP the chip can hold its 3.3 GHz base clock across all 10 cores during long sessions. Turbo peaks of 4.3 GHz appear on fewer cores when thermal headroom allows. A capable cooler is essential because no cooling device is included in the box.

LGA-2066 installation needs even pressure

The large 2066-land package demands careful alignment and firm, even mounting pressure to avoid bent pins or poor contact. Builders often forget to update the X299 BIOS before first boot, which prevents the system from posting. DDR4-2666 memory and a 44-lane PCIe 3.0 layout complete the platform requirements.

How it compares

Measured against everything we stock in Desktop Processors, at today’s prices. Recalculated every night.

Price $173.99
Pricier than about 56% of the 494 comparable items (median $149.99).
CPU cores 10-Core
Higher than about 55% of the 271 comparable items (median 8).
Maximum turbo clock 4.3 GHz
Lower than about 75% of the 246 comparable items (median 4.7 GHz).

New to this? Buying a processor with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameIntel
Product lineCore i9
Product nameCore i9-7900X
Performance
Working frequency3.3 GHz
Processor
CPU cores10-Core
Maximum turbo clock4.3 GHz
TDP rating140 W
Processor classDesktop
Processor codenameSkylake
CPU threads20-Threads
CPU instruction set64-Bit
Hyper-ThreadingYes
Max PCIe lanes44
Memory
Supported memoryDDR4-2666
Ports & slots
PCIe generation3.0
In the box
Included coolerNot included - Processor Only

Questions about this item

How much heat does the 140 W TDP of the Core i9-7900X generate during sustained all-day workloads?

The processor has a 140 W thermal design power, so a cooler rated for at least that much heat is required to keep temperatures stable during continuous operation.

Which motherboard socket and chipset must I already own to install the Core i9-7900X?

You need an LGA 2066 socket motherboard based on the Intel X299 chipset; the CPU will not fit or function on any other platform.

Will my existing DDR4-2666 memory and PCIe 3.0 add-in cards work at full speed with this 10-core CPU?

Yes, the memory controller supports DDR4-2666 and the processor provides 44 PCIe 3.0 lanes, so current DDR4 modules and PCIe 3.0 devices operate at their rated speeds.

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