AMD RX 9070 XT specifications listed by Overclockers UK

Will AMD’s new RDNA 4 GPUs only support PCIe 4.0?

Overclockers UK accidentally published specifications and an FAQ sheet for AMD’s upcoming Radeon RX 9070 GPU lineup. Videocardz were the first to spot these listings. However, these listed specifications are likely false or inaccurate.

AMD previewed RDNA 4 and its RX 9070 XT and RX 9070 graphics cards at CES 2025. At this event, AMD remained quiet about the specifications of both GPUs. When visiting PowerColor at CES, we noted that their GPUs were listed as having 16GB of VRAM, which is matched by the leaked specifications below.

The first thing to note about these leaked Overclockers UK specifications for AMD’s Radeon RX 9070 series is how closely matched both GPUs are. Why do the RX 9070 XT and RX 9070 have 4096 shading units? With such close clock speeds and the same amount of VRAM, both GPUs should perform nearly identically. As such, we believe that these specifications are inaccurate. If the RX 9070 XT has 4096 shaders (64 RDNA 4 Compute Units), the RX 9070 will likely have around 3584 shaders (56 RDNA 4 compute units).

(Image from Videocardz)

Another thing to note is that both GPUs have identical TDPs. These TDP values don’t make sense given the number of RX 9070 XT GPUs that we have seen with three 8-pin PCIe power connectors. Two 8-pin connectors can deliver up to 300W, so why use three of these connectors when that level of power headroom is not required?

Above, we can also see a suggestion that AMD’s RDNA 4 GPU lineup will be PCIe 4.0 compatible. This means that AMD’s new GPU lineup will lack PCIe 5.0 support. While this support will not be necessary to maximise AMD’s game performance, it is strange to see AMD sticking to PCIe 4.0 when their latest motherboards support PCIe 5.0.

You can join the discussion on Overclockers UK’s RDNA 4 leak on the OC3D Forums.

Mark Campbell

Mark Campbell

A Northern Irish father, husband, and techie that works to turn tea and coffee into articles when he isn’t painting his extensive minis collection or using things to make other things.

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