The German overclocker Roman Hartung, recognized on social networks as “der8auer” has overclocked his AMD Radeon RX 6900 XT, which has the particularity of being geared up with the Navi 21 XTXH GPU, the variant with the very best efficiency and subsequently with the flexibility to supply the very best overclocking capabilities. At the second solely PowerColor and ASRock supply fashions of the RX 6900 XT geared up with the Navi 21 XTXH GPU.
Beyond 3.2 GHz with an AMD RX 6900 XT
The very first thing we have now to take note is that AMD had beforehand restricted the utmost clock pace of its AMD RX 6000 at 3 GHz, however the XTXH variant has that restrict elevated to Four GHZ. This is what has allowed der8auer to overcome this barrier when it comes to pace.
The exams have began with the PowerColor Liquid Devil Ultimate, which has a built-in radiator as commonplace, through which it has carried out the exams to understand how far this graphics card can attain earlier than making use of cooling by the LN2. The outcome? It has been ready to attain 2820 MHz with a temperature of 86º C placing the cardboard to the check within the Time Spy benchmark constructed into 3DMark. This is an increase of 280 MHz over the utmost stipulated by AMD.
Of course, it should be taken under consideration that the clock pace of the AMD RX 6000 on PC is adjusted in accordance to the workload, so it’s not at all times working at that pace and with more demanding exams it might attain a barely increased pace .
Overclock to a RX 6900 XTXH with LN2
The subsequent step has been to cool the GPU utilizing liquid nitrogen cooling, LN2. This permits the RX 6900 XTXH to be put at a temperature of detrimental 87ºC. This temperature permits the graph to attain, measured by GPU-Z, 3.225 GHz.
That if, apparently the graph exhibits picture artifacts. So regardless of having managed to obtain this clock pace within the GPU, we are able to conclude that the GDDR6 VRAM and the video interfaces will not be designed to work collectively with such a low temperature cooling block. Nor can we neglect that 3.225 GHz, regardless of being the very best pace ever reached by any GPU on the earth, remains to be removed from the 4 GHz restrict.
All this exhibits us how AMD has designed its RDNA 2 structure to obtain excessive clock speeds in contrast to its direct predecessor, for this it has sure aids resembling using the Infinity Cache. AMD’s philosophy contrasts with NVIDIA’s with the RTX 30, which have a wider design however at a decrease clock pace.