AMD new RX7900XTX and RX7900XT graphics cards arrive in a few days, and we have them in-house now, running benchmarks, to see how they'll stack up. More on the RX 7900 XTX: GamingNews gamingpc GPU
AMD finally pulled back the curtain on the RX 7900 XTX and its new RDNA 3 architecture. The card will arrive in a few short weeks, and before it does, we rounded up everything you need to know about specs, pricing, performance, and how the card will fare against Nvidia’s beastly RTX 4090.
Related Specs The specs of the RX 7900 XTX don’t look crazy, at least based on the standards of a flagship GPU. You get 24GB of GDDR6 memory — the same capacity as the RTX 4090 — along with boost clocks near 2.5GHz. The clock speed is a bit complicated, though, as we’ll dig into a bit later in this section.
For clock speed, AMD claims the RX 7900 XTX has a Ggame clock of 2.3GHz, which is the frequency you should expect the card to run at while playing games. However, the boost clock speed can reach higher, and there isn’t a single clock speed governing the system. AMD explained that it uses slightly slower clock speeds on the compute units themselves, leading to better efficiency without a big drop in performance.
At the center of the design is the Graphics Compute Die , which holds all of the logic for the GPU. It’s built on a 5nm node, and it’s where you’ll find the redesigned Compute Units . We’ll circle back to the CUs shortly, but the GCD also houses the new media engine that supports AV1 encoding and decoding, as well as the Radiance display engine. The display engine enables DisplayPort 2.1, as well as support for 12-bit color depth per channel , up to 68 billions colors.
Deeper in the GCD is where the CUs live, and these are the building blocks of the RDNA 3 architecture. The RX 7900 XTX comes with 96 CUs, and each one comes with 64 dual issue processors. These processors can handle two different instructions down each data path, leading to two times the instruction issue rate of RDNA 2. It’s not two times as fast — instructions can just be put into motion twice as fast.
Overall, AMD claims the RX 7900 XTX is 1.7x faster than the RX 6950 XT in rasterized performance, and up to 1.8x faster in ray tracing performance. Our testing shows that the RTX 4090 is just under twice as fast as the RX 6950 XT, which would place the RX 7900 XTX about 15% o 20% behind the RTX 4090. It’s hard to say anything definitive right now, though.
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