EK’s Radeon RX 7900 XTX Water Blocks Coming in December

AMD’s Radeon RX 7900 XT and Radeon RX 7900 XTX graphics cards are over a month away, but the first water blocks of the red company’s flagship should be available by the time the boards hit the market. Since AMD’s new Big Navi 31 graphics processor uses a multi-chiplet design, these water blocks will have to use a new layout.

Just hours after AMD hosted its RDNA 3 launch event EKWB introduced First EK-Quantum Vector² water block for Radeon RX 7900 XTX graphics card in reference design. The water block is designed to cool the Navi 31’s main Graphics Compute Die (GCD), Memory Cache Die (MCD), Voltage Regulation Module (VRM) and GDDR6 memory. AMD’s new range-topping Radeon RX 7900 XTX supports up to 355W of thermal graphics power, so the benefits of liquid cooling are obvious.

Since AMD’s Navi 31 GPU consists of up to 7 elements (1 GCD and up to 6 MCD), EK had to redesign their Vector² design. First, rotate the Open Split-Flow cold plate 90° so that the fins are perpendicular to the die (the fins are typically parallel to the die). Second, we’ve reconfigured the liquid flow so that the coolant flow on the graphics core dies first, and the memory cache last. On the other hand, the flows are arranged so that all MCDs are in the same temperature coolant. Third, we increased the fin density from 0.6/0.4 mm to 0.4/0.26 mm to consider the increased power consumption of multi-chiplet Big Navi.