Which power supply for this RX 7700 XT:
It’s only logical to ask what kind of power supply you’ll need to build a new configuration around either the RX 7700 XT or the RX 7800 XT. There are several ways of doing this, such as referring to AMD’s recommendations. In this case, AMD recommends a minimum 700-watt power supply for both the RX 7700 XT and the basic RX 7800 XT. We’ve been able to get our hands on various power supply models from Asus that would be perfectly suited to the TUF Gaming RX 7700 XT OC or the TUG Gaming RX 7800 XT OC. Both our Asus graphics cards are factory-pre-overclocked and will therefore require a little more power, especially if you intend to overclock the graphics chip as well as the other components of your configuration, like the processor for example.
ASUS also offers an online tool that lets you calculate the power you need to power your configuration. Simply specify the model of your processor and graphics card. You’ll then have a recommended power rating, as well as the option of indicating that you intend to overclock your configuration, thus increasing the power of the power supply.
Let’s take a look at the three PSU models we have available: the ROG LOKI SFX-L 850 watts Platinum, a ROG Strix 1000 watts Gold AURA Edition and finally the TUF Gaming 1000 watts Gold.
ROG LOKI SFX-L 850 watts Platinum:
Four power ratings have been announced: 750W, 850W, 1000W and 1200W. These should ensure good performance, since the “lowest” wattages are certified 80 Platinum. The 1200W version is off the beaten track, with a very, very high 80 Titanium certification! This means efficiency of at least 90%, even at 10% load!
Internally, ASUS once again selects quality components with low ESR Japanese capacitors. These capacitors are less prone to power loss and temperature rise. Speaking of temperatures, the brand once again uses very large internal heatsinks to improve cooling. Couple all this with a 120 mm Axial-Tech fan for efficient dissipation.
Finally, let’s not forget that these power supplies comply with the ATX 3.0 standard. They are therefore capable of outputting twice their power for a few microseconds. Likewise, they also feature a 12VHPWR cable capable of delivering 600W of power to power RTX 4000s.
ROG Strix 1000 watts Gold AURA Edition:
These power supplies come in three power ratings: 750W, 850W and 1000W. All are 80 Gold certified, ensuring 92% efficiency at 50% load. On the other hand, no matter how powerful the block, the casing is certainly well designed, but equally imposing. The 750W version is 18 cm deep!
The brand also distinguishes itself with a well-constructed interior. As usual, ASUS uses large internal heatsinks to improve cooling of the block’s heating elements. Still on the subject of cooling, the brand uses a 135 mm Axial-Tech fan with semi-passive operation. As a result, ventilation is cut off at up to 50% load, ensuring maximum silence.
For the electrical part, the Taiwanese brand opts for a single 12V rail. In terms of electrical protection, we have OPP, OVP, UVP, SCP, OCP and OTP. And, of course, ATX 3.0 compliance enables the blocks to deliver 200% of their power over a short period of time. Last but not least, there’s the indispensable 12VHPWR 16-pin connector to power an RTX 40… and everything else in between.
TUF Gaming 1000 watts Gold:
The brand offers a total of three power supplies. The power ratings are 750W, 850W and 1000W. Naturally, they comply with the new ATX 3.0 standard and feature the famous 12VHPWR connector. So you’ll be able to power your RTX 40 without the need for a dubious adapter.
On the electrical side, the first thing to note is the 92% efficiency thanks to 80 Gold certification. Otherwise, the construction seems to inspire confidence, thanks to Japanese capacitors. Likewise, the PCB benefits from a coating that protects it from moisture, dust and other debris. Short circuits are thus avoided. Otherwise, all these models benefit from a single 12V rail and the following protections: OPP, OVP, UVP, SCP, OCP and OTP.
Finally, ventilation is provided by a 135 mm fan with double ball bearings. This Axial-Tech mill should work actively.
