Bitspower Unveils Mobius RTX 3090 FE Water Block, and X-TEND Liquid-Cooled Backplate | TechPowerUp
 
Bitspower today unveiled a pair of innovative liquid-cooling products for high-end graphics cards. First up is the premium Mobius water block for the GeForce RTX 3090 Founders Edition; and next up, is the X-TEND Backplate for ASUS ROG Strix GeForce RTX 3090 series. The Mobius (model number: BPPRE-VG3090FEID) takes advantage of the compact PCB of the RTX 3090 FE to give you a compact 2-slot solution, with the plumbing located at its tail-end, rather than along the top (where NVIDIA's fancy 12-pin power connector is located). The block uses nickel-plated copper as its main material, with a chunky tinted acrylic top that's wrapped around by an alloy scaffolding that attempts to resemble NVIDIA's original product design. The top is studded with addressable-RGB LEDs.

The X-TEND Backplate for ASUS ROG Strix GeForce RTX 3090 is an interesting product. It's a backplate that features a small water block that pulls heat from the GDDR6X memory chips located at the reverse side of the PCB, as well as heat from right behind the GPU. A distributor is included, so you can share coolant with your main water block that's on the obverse side of the PCB. Barring the centrally-located water block, the X-TEND is made mainly of acrylic, with a PE-film cover, and is studded with addressable RGB LEDs. The Mobius for RTX 3090 FE is priced at USD $425, while the X-TEND liquid-cooled backplate for the ROG Strix RTX 3090, is priced at $198.
 
The quality looks good in my personal opinion, but the prices seem to be high.