Sapphire Radeon RX 6900 XT LC tested
Bilibili content creators gained access to Sapphire’s unreleased Radeon RX 6900 XT LC graphics card.
Without a doubt, the graphics card that was shown in the video review does look like a reference model. In fact, the card does not even have a Sapphire sticker anywhere, but it is covered by AMD and Radeon logos. This might confirm that the card is indeed AMD in-house design and might become available from other AICs in the future.
According to the rumors, AMD has been working on a liquid-cooled model called Radeon RX 6900 XTX. This SKU has never been released, in fact, AMD never even acknowledged working on such a model. The GPU that would have powered this model is known as Navi 21 XTXH, which ended up in models such as Sapphire’s TOXIC Extreme, ASRock’s OC Formula, PowerColor Red Devil LC Ultimate or ASUS ROG STRIX LC. All these cards have increased power targets and GPU frequencies compared to the original RX 6900 XT model.
This model is clocked at 2250 MHz (Game) and 2435 MHz (boost), which puts it slightly under all these XTXH models mentioned above. According to the specifications posted on Bilbilibi, this model does in fact, have a memory clock sped increased to 18.48 Gbps. Unlike most XTXH cards which feature a triple-8pin power connector, this version is only powered by two.
The RX 6900 XT LC that was tested clearly has a better GPU than the stock air-cooled XT model. On average the liquid-cooled model appears to be 5% faster than the vanilla air-cooled model. This model is then outperformed by Sapphire’s Toxic Extreme (with further increased TGP/clock speeds). All three RX 6900 XT models trade places with GALAX RTX 3090 HOF (the flagship model from the manufacturer) depending on the workload. Do note we only included synthetic benchmarks so make sure to check the full video by following the source link. Also note, that the charts do not start at 0.
According to Coreteks, a YouTuber who had recently revealed AMD plans for Radeon RX 6700 XT series before they launched and correctly predicted the AMD FidelityFX launch date, the Sapphire RX 6900 XT LC is exclusive to system integrators. In fact, we have not yet seen this model anywhere else except in China. The global availalbity is currently unknown. We do, however, hope to hear more about this SKU from AMD during the upcoming FSR reveal, now scheduled for June 22nd.