Friday, February 19th 2021
Sapphire Launches the Radeon RX 6900 XT TOXIC Limited Edition
Sapphire on Thursday (Feb 18) formally launched its flagship graphics card, the TOXIC Radeon RX 6900 XT Limited Edition. This liquid-cooled graphics card features an all-in-one, closed-loop cooling solution that pulls heat from the GPU and memory, while a fan-heatsink cools the VRM and provides some additional air-cooling to the card. The liquid cooler uses a large 360 mm x 120 mm radiator. ARGB illumination covers everything from the radiator fans, to the on-card fan, and the cooler shroud.
The TOXIC Radeon RX 6900 XT Limited Edition features Sapphire's highest factory-overclock for the RX 6900 XT, with engine boost clocks stated to be "beyond" 2365 MHz (vs. 2250 MHz reference). The memory is untouched at 16 Gbps (GDDR6-effective). The card pulls power from a combination of two 8-pin and one 6-pin PCIe power connectors. Display outputs include three DisplayPort 1.4a and an HDMI 2.1. Sapphire is officially pricing the TOXIC Radeon RX 6900 XT Limited Edition at USD $1,499, a 50% premium over the reference design, but you can bet that the real-world pricing could be north of $2,000.
The TOXIC Radeon RX 6900 XT Limited Edition features Sapphire's highest factory-overclock for the RX 6900 XT, with engine boost clocks stated to be "beyond" 2365 MHz (vs. 2250 MHz reference). The memory is untouched at 16 Gbps (GDDR6-effective). The card pulls power from a combination of two 8-pin and one 6-pin PCIe power connectors. Display outputs include three DisplayPort 1.4a and an HDMI 2.1. Sapphire is officially pricing the TOXIC Radeon RX 6900 XT Limited Edition at USD $1,499, a 50% premium over the reference design, but you can bet that the real-world pricing could be north of $2,000.
18 Comments on Sapphire Launches the Radeon RX 6900 XT TOXIC Limited Edition
In addition, all these AIO water cooling solution really just cools the GPU. The rest of the components are still sizzling hot, but left to air cooling. Even with a chunky heatsink on the VRAMs and VRMs, I don't think they are that easy to cool. I am not sure what sorts of crazy overclocking are you looking at. So far all the RX 6900/6800 have a overclocking limit baked into the BIOs. So even if you can get some exotic cooler on it, the RX 6800 caps out at 2.8 Ghz and 6900 @ 3 Ghz? Memory overclocking is also badly limited to 2150Mhz. To me, the memory overclock limit is probably one of the worst thing on the RDNA cards because I feel the card can benefit with a higher memory bandwidth at 4K resolution. This is especially the case in games that may not be optimized to fully utilize the Infinity cache.
@watzupken
Yes, 6800XT is limited to 2.8GHz and 6900XT to 3.0GHz but very few cards achieve 2.7GHz.
Mine achieves 2650MHz frequency and after that it becomes unstable. I have reference 6800XT which is custom watercooled.
Not all can achieve 2150MHz on VRAM. Mine cannot more than 2100MHz. Set it 2110MHz and run some graphic load and my whole computer hangs requiring reboot.
After following the forums since some time as owner of 6800XT looking at experience from other owners, there is no garantie that cards that have 3×8pin can overclock towards the limit.
So it can happen you have super expensive card and it does not overclock as well as some of reference cards. :p
What I meant hopefully when they built such a nice watercooled card with 2×8pin and 1x6pin, hopefully they will also select a high binned GPU chip to exploit the potentials.
I agree with you and don't understand why they never do full cover block to cool the other components as well like VRM.
That's why I usually prefer reference card and put it myself under full cover block. The only thing is that it is all up to luck either you get a cards that is good enough and worth the water cooling or it's waste.
Mine definitely worth it as the performance gain from OCing is not that bad. I am getting around 7% higher game performance compared to my own GPU at default setting.
Here are some links to my tuning experiments.
www.techpowerup.com/forums/threads/the-rx-6000-series-owners-club.276164/post-4458332
www.techpowerup.com/forums/threads/the-rx-6000-series-owners-club.276164/post-4459235
There are tons of limited editions of consoles and they perform the same, that doesn't have to do anything with it's performance.
Even if the thermals permit the card to be overclocked further, it will still hit the overclocking hard limit set by AMD.
www.kitguru.net/components/graphic-cards/dominic-moass/sapphire-toxic-rx-6900-xt-limited-edition-review/
www.tweaktown.com/reviews/9732/sapphire-toxic-radeon-rx-6900-xt-limited-edition/index.html