Processors comparison
Ryzen 9 7900X vs Ryzen 9 9900X
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.
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 9 9900X is rated at 120 W TDP against 170 W, so it is easier to cool and puts less load on the power supply.
- Their lowest listed prices are within £1 of each other.
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
| Specification | Ryzen 9 7900X | Ryzen 9 9900X |
|---|---|---|
| Platform | ||
| SocketDecides which motherboards the processor fits. | AM5 | AM5 |
| Memory support | DDR5 | DDR5 |
| Architecture | Zen 4 | Zen 5 |
| Series | AMD Ryzen 9 | AMD Ryzen 9 |
| Cores and clocks | ||
| Cores | 12 | 12 |
| Threads | 24 | 24 |
| Max boost clock | 5.6 GHz | 5.6 GHz |
| Power and cooling | ||
| Rated TDPThe maker's thermal design rating, not measured power draw. | 170 W | 120 W |
| Cooler in the box | No | No |
| Features | ||
| Integrated graphicsWithout it you need a graphics card to get a picture. | Yes | Yes |
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