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XFX Radeon RX 5700 DD Ultra 8GB GDDR6 Video Card Review

Videocards/VGA Reviews by stefan @ 2019-10-10

With the DD Ultra we are seeing a notable performance increase over the previously tested PowerColor Red Dragon RX 5700 and at the same time the power limits have been upped from 173W to about 206W (maximum recorded ASIC Power consumption). This modification did also imply higher Boost clocks, up to 1934MHz (much higher than the advertised speed) so with the XFX RX 5700 DD Ultra we did experience quite a performance jump. XFX also made sure to include a beefy cooling system to go with it so the card will function under optimal conditions even with a raised TGP.

A Closer Look Part III

As we have seen with the other XFX card, the I/O interfaces are the same (three DisplayPort 1.4 ports but also one HDMI 2.0b):

A large backplate is present on the bottom, with the XFX logo in the middle:

Besides the PCI-E slot, this card does also need extra power from a 8-pin and a 6-pin connector:

As the XT before it, this card is equipped with a Dual BIOS system, that can be selected via a switch; the default position is the Performance BIOS, which we will feature in our tests:

The cooling system can be lifted by removing the four spring-loaded screws around the GPU, two screws that hold the VRM cooling in place but also two smaller screws near the end of the PCB that keep the heatsink securely in place. The layout is similar to what we have seen with the RAW II Ultra, minus a power phase:

The GDDR6 memory ICs are manufactured by Micron and carry the D9WCW code; from the factory, these are designed to run at the stock frequency of 1750MHz (14Gbps effective rate):

We do have a two-phase design for the memory VRM, controlled by the NCP81022 IC:

The VRM components in charge of the GPU are driven by the NCP302155 ICs from ON Semiconductor:

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