Specifications
The clock speeds are what really make this video card. A reference AMD Radeon RX 5700 XT has a base clock of 1605MHz and a game clock of 1755MHz and a highest boost clock of 1905MHz. Well, the XFX Radeon RX 5700 XT THICC III Ultra has a base clock of 1810MHz a game clock of 1935MHz, and a highest boost clock of 2025MHz. That is a 205MHz higher base clock, a 180MHz higher game clock, and a 120MHz higher boost clock.
The XFX Radeon RX 5700 XT THICC III Ultra has 8GB of GDDR6 running at 14GHz. This provides it 448GB/sec of memory bandwidth. This is also the reference specification, so memory is not overclocked out-of-the-box.
These GPU clock speeds are possible because XFX actually runs the GPU voltage higher than what you get in a reference card. The GPU voltage runs at 1.200V versus 1.193V on a reference video card. It seems small, but it is just enough to maintain a higher clock speed with no stability issues. This does produce extra heat, but that heat is managed by the incredible THICC III cooling on this video card. As we said, it is thick for a reason.
Cooling and BIOS
It is also long; this is a long video card. That leaves a lot of space for thick heatsinks from front to back and lots of heatpipes. With the 3 fans on the top, it keeps the heatsink plenty cool. There are 2 90mm fans and 1 100m fan. These are not small fans by any means, everything about this video card is thick. The heatsink has a copper base and makes contact with the GPU and memory. The fans are also dynamically controlled and it supports 0db technology so that they stop in idle.
To allow stable power XFX has provided two 8-pin power connectors. XFX recommends a 600W PSU at least. XFX also has a dual-BIOS on board. There is a switch on the top of the video card that switches between the two BIOS’s. In its default position, the video card is in performance mode, which is full performance and more aggressive fan speeds. If you go to quiet mode it runs less aggressive fan profiles and lower clock speeds. If you are spending the money on this thick video card you won’t want to run in quiet mode though, keep it in the default performance mode for full performance.
Size and Ports
The video card also has 3 DisplayPorts and 1 HDMI port. The measurements on this video card are 12.4” long, 2.24” in height (thickness), and 5.16” wide. For comparison, a reference AMD Radeon RX 5700 XT measures 10.7” long, 1.5” in height (thickness), and 4” wide. You can see just how much bigger in all dimensions this video card is, you should not underestimate its size. That size though, allows it to push the Radeon RX 5700 XT GPU to new heights and performance levels.
This being a Radeon RX 5700 XT it also supports PCI-Express 4.0 (PCI-E 4.0) interface. We are running this video card on an AMD X570 chipset motherboard and Ryzen 7 3700X, so PCIe 4.0 is enabled and running.
