etc introduced the models last night Radeon RX 7900 XT and Radeon RX 7900 XTX launch RX 7000 generation and RDNA 3 architecture. Graphics waiting to be tested benchmarkers independent, it seems that they started promisingly, but they left behind a detail that disappointed many and that is the fact that the graphics processor does not work at 3GHz by default.

New information about the maximum frequency of the graphics processor dispels rumors that have been circulating recently. According to PC World, a media outlet that was invited to the launch event, this can be scaled up to 3 GHzthat is, it would be the maximum working speed after application overclocking. This contrasts with the announced frequencies of 2.5 GHz and 2.4 GHz for the RX 7900 XTX and RX 7900 XT.which are clearly lower than the 3GHz that was rumored to be the default frequency.

The 3GHz issue gets even more muddled when we consider information posted by the coreteks YouTube channel, who stated via Twitter that with the pre-drivers, assemblers would only be able to achieve a 3% overclock on the 7900 XTX, which would be a pretty weak gain over the default Settings.

Some people asked during the stream so I asked AIB and they say only 3% OC over the XTX with the pre-drivers (which were mainly used for thermal tests to be fair). If true, it looks like XTX is already close to peaking 😢 pic.twitter.com/X9E7EbSwIQ

— coreteks (@coreteks) November 4, 2022

According to the coreteks version controllers that showed little improvement were mainly used for thermal tests, but if this result were to be maintained, it would mean that the Navi 31, the graphics processor of the two presented models, would be practically overloaded from the factory, so that it would not be able to reach 3GHz. There is still hope that the final drivers will allow more overlockbut it seems that remains to be seen.

Custom models coming from assemblers have yet to see the light of day with the exception of ASUS, whose only graphics shown so far, the TUF Gaming Radeon RX 7900 XTX OC Edition 24GB GDDR6, have no published clocks and only list 6144 shaders, half of what AMD announced. Don’t panic because this is due to RDNA 3’s new design, which by including a dual SIMD32 in each compute unit (UC) allows two simple floating point arithmetic (FP32) instructions to be executed simultaneously. time. This means that each compute unit can perform 128 FP32 compared to 64 for RDNA 2.

Some features of ASUS TUF Gaming Radeon RX 7900 XTX OC Edition 24GB GDDR6.

To achieve the 61 teraflops advertised for the RX 7900 XTX and due to the RDNA 3 architecture, you have to multiply 6,144 x 4 x 2.5 GHz, but the same result would be achieved by multiplying 12,288 x 2 x 2.5 GHz. Basically, what happens is that the second formula is easier to understand and creates less confusion, especially when comparing products from competitors. Yes, The RX 7900 XTX actually has 12,288 shaders, in case anyone was still in doubt.

We will see how the question of the maximum frequencies that the Navi 31 is supposed to reach will end. It does happen that the rumors are not true, but that the GPU is not able to reach the maximum speeds announced by AMD, which can be a problem.