Review : Powercolor RX 7900 XTX Red Devil Limited Edition


Specifications and PCB:

The technical specifications:

In terms of frequency, the base frequency is announced at 2395 MHz while the Boost is at 2565 MHz. The 24 GB of G-DDR6 memory runs at 2500 MHz (980 GB/s) on a 384 bit bus. Our Powercolor RX 7900 XTX Red Devil Limited Edition benefits from a slight factory overclocking, since the reference card, the RX 7900 XTX benefits from a Boost frequency of 2500 MHz.

A small passage through GPU-Z to check that the information read is correct. And there, it is not the case, it seems that GPU-Z does not read correctly the values announced by the manufacturer. We have contacted Powercolor and we are waiting for a return but we think that the problem comes from the software.

Let’s unpack the PCB:

The novelty of this architecture is the design based on the addition of MCD (Memory Cache Die), also called memory chiplets. This design with its two distinct parts reminds us of the AMD processors. The PCB below is the one of the Radeon RX 7900 XTX.

We find the GCD (Graphic Compute Die) engraved in 5 nm with a size of 300 mm ² and then five or six MCD(Memory Cache Die) also called memory chiplets which are engraved in 6 nm. Each one occupies a surface of 37 mm². The PCB consists of 21 phases, 12 + 3 + 2 for the GPU and 2 + 2 for the memory.