7th Gen Intel Core i9-7900X
- Boost/Base Clock:
- 4.3 GHz / 3.3 GHz
- Core/Thread Count:
- 10 Core / 20 Thread
- Cache:
- 13.75MB L3 + 10MB L2 + 640KB L1
- TDP:
- 140 Watts
- CPU Process Node:
- 14 Nanometers
- CPU Socket:
- FCLGA2066
- CPU Series:
- Skylake-X
- Memory Support:
- DDR4-2666
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Manufacturer: Intel Last updated: September 9, 2026
Description
The 7th Gen Intel Core i9-7900X was Intel's original Skylake-X HEDT flagship, a 10-core, 20-thread processor running a 3.3 GHz base clock that boosts to 4.3 GHz within a 140 Watt TDP on the LGA2066 socket.
As the launch chip for Intel's first-generation X-series HEDT platform on LGA2066, this processor was the direct predecessor to the later 9th and 10th Gen X-series refreshes.
Platform
This HEDT chip requires an X299-series motherboard on the LGA2066 socket, typically paired with quad-channel memory for genuine workstation-scale bandwidth.
How Is the Core i9-7900X in Terms of Performance
With 10 cores and 20 threads, this chip targeted prosumer content-creation and workstation workloads at launch, establishing Intel's original LGA2066 HEDT platform that later 9th and 10th Gen X-series chips would build on.
Benchmarks
As Intel's original Skylake-X HEDT flagship, this chip's genuine 10-core, 20-thread performance was class-leading at launch, though later Cascade Lake-X refreshes on the same platform offered meaningful clock speed improvements.
Specifications
| Form Factor | Server & Enthusiast |
|---|---|
| Brand | Intel |
| Series | Core i9 |
| Model Number | 7900X |
| Boost/Base Clock | 4.3 GHz / 3.3 GHz |
| Core/Thread Count | 10 Core / 20 Thread |
| Cache | 13.75MB L3 + 10MB L2 + 640KB L1 |
| TDP | 140 Watts |
| CPU Process Node | 14 Nanometers |
| CPU Socket | FCLGA2066 |
| CPU Series | Skylake-X, 7th Gen Intel Core |
| Memory Support | DDR4-2666, non-ECC (ECC not supported) |
Expert Review
Rated by the Consumercarts editorial team, not by users
Best for
- Buyers specifically wanting Intel's original Skylake-X HEDT flagship on the LGA2066 platform
Not for
- Buyers with access to later 9th or 10th Gen X-series chips — those offer meaningful clock speed improvements on the same platform