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Processors comparison

Ryzen 7 9700X vs Ryzen 9 7900

Specs, platform, power, size and UK prices side by side. Every value comes from the product listing; anything we don't hold is marked unknown.

AMD Ryzen 7 9700X 8 Core AM5 CPU/Processor
AMD
Ryzen 7 9700X
£280.47at Scan
Checked 20 Oct 2026. Confirm at the retailer.
View at Scan
AMD
Ryzen 9 7900
£302.47at Scan
Checked 20 Oct 2026. Confirm at the retailer.
View at Scan

Key differences

  • Both use the AM5 socket. Check a motherboard's CPU support list before swapping one for the other; older boards can need a BIOS update.
  • The Ryzen 7 9700X has 8 cores / 16 threads; the Ryzen 9 7900 has 12 cores / 24 threads.
  • The Ryzen 7 9700X boosts to 5.5 GHz, 0.1 GHz higher than the Ryzen 9 7900.
  • The Ryzen 9 7900 comes with a cooler in the box; budget for a separate cooler with the Ryzen 7 9700X.
  • The Ryzen 7 9700X is £22.00 cheaper at its lowest listed new price (£280.47 against £302.47).

Performance

We don't have measured benchmark results for these parts yet, and we don't publish estimated scores. Specs like core count, clock speed and video memory are a guide, not a measure of speed in games or apps.

Specifications

SpecificationRyzen 7 9700XRyzen 9 7900
Platform
SocketDecides which motherboards the processor fits.AM5AM5
Memory supportDDR5DDR5
ArchitectureZen 5Zen 4
SeriesAMD Ryzen 7AMD Ryzen 9
Cores and clocks
Cores812Higher
Threads1624Higher
Max boost clock5.5 GHzHigher5.4 GHz
Power and cooling
Rated TDPThe maker's thermal design rating, not measured power draw.65 W65 W
Cooler in the boxNoYes
Features
Integrated graphicsWithout it you need a graphics card to get a picture.YesYes

More comparisons

Prices are the lowest listed new price from retailers we track, checked on the date shown, and can change. We may earn a commission from retailer links. How it works