AMD’s Radeon RX 6900 XT LC takes RDNA2 to its extreme
German website Computer game hardware Managed to obtain AMD’s Radeon RX 6900 XT liquid-cooled graphics card, which is only available from specific system manufacturers, and Will not be sold in retailThe clock frequency of the card is slightly higher than initially advertised, so its performance is higher than people imagine. But is it really higher?
When AMD Formal introduction The Radeon RX 6900 XT liquid-cooled graphics card released last month did not disclose all its specifications. As PCGH discovered, Radeon RX 6900 XT LC is based on AMD’s Navi 21 XTXH chip, with 5120 stream processors, higher TGP (typical graphics power of the entire motherboard), and no clock limitation. This means that the card can be pushed to 400W TGP, opening the door to extreme frequencies.
By default, the GPU has a game clock of 2250 MHz, but it can be boosted to 2435 MHz (with 400W TGP, it will take more time to work in boost mode than a normal Radeon RX 6900 XT motherboard) and some additional Overclocking potential, just like other Navi 21 XTXH cards.
In addition to higher TGP and GPU clocks, Radeon RX 6900 XT Liquid Cooled is also equipped with 16GB GDDR6 video memory, with a data transfer rate of 18.5 GT/s, which is 0.5 Gbps higher than originally advertised. This provides it with a peak bandwidth of 591 GB/s, which is a 15.6% increase over the 16 GT/s GDDR6 and 512 GB/s bandwidth of the conventional Radeon RX 6900 XT.
With 12% GPU clock and 15.6% peak memory bandwidth, Radeon RX 6900 XT Liquid Cooled is obviously faster than AMD’s reference Radeon RX 6900 XT, although it may still be challenged by such motherboards. Sapphire’s Toxic Radeon RX 6900 XT Extreme EditionHowever, can it beat Nvidia’s GeForce RTX 3090/3080 Ti when the original model cannot be beaten?
PCGH found that although AMD’s limited edition Radeon RX 6900 XT LC can beat GeForce RTX 3090/3080 Ti in many cases, while the air-cooled Radeon RX 6900 XT cannot, in most cases, Nvidia’s Ampere architecture is relatively AMD’s RDNA 2 performs well (ie, ray tracing is enabled), high clocks will not help.
But although AMD’s Radeon RX 6900 XT Liquid Cooled is not the fastest graphics card on the planet, it is clearly one of them. Best graphics card And the fastest RDNA2 driven product is available.The board is only sold as part of a high-end system from a boutique PC manufacturer, so those who want to get an exclusive RDNA 2 card should look at the product from Navi 21 XTXH Asus, ASRock, Gigabyte, sapphire, Powercolor There is no fast memory, but it seems to have a higher potential cooling system, so it can provide a higher GPU clock.