The online edition PC Games Hardware has published a detailed review of the Radeon RX 6900 XT Liquid Cooled video card - the top 3D Navi 21 accelerator in the AMD reference design. This model stands out against the background of the analog available in retail with a liquid cooling system, a Navi 21 XTXH core with a high-frequency potential, and faster GDDR6 chips. Unfortunately, it can only be purchased as part of ready-made PCs from AMD partners, which is what our German colleagues did.
The frequency formula of the AMD Radeon RX 6900 XT Liquid Cooled is 2050/2250/2435 MHz (Base / Game / Boost Clock) versus 1825/2015/2250 MHz for the reference version with an air cooler. The effective frequency of the GDDR6 chips has been increased to 18.4 GHz, resulting in a throughput of 589 GB / s. At the same time, the nominal TDP level increased from 300 to 350 watts.
It is quite expected that in the gaming benchmarks the Radeon RX 6900 XT Liquid Cooled turned out to be noticeably faster than the regular Radeon RX 6900 XT and stepped on the heels of the GeForce RTX 3090. However, in projects where there are ray-tracing effects, the video card is located between the GeForce RTX 3070 Ti and RTX 3080.
Asetek's maintenance-free LSS with a 120mm radiator is responsible for cooling the device. During testing, it was able to keep the GPU temperature at 80 ° C (90 ° C at the hottest point of the crystal), which can be considered a good result, given the 284-watt power consumption of the graphics core.
A detailed review of the Radeon RX 6900 XT Liquid Cooled can be found here. As the editors of PC Games Hardware reports, AMD still does not specify why this video card is available only to OEMs.
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