ASUS Radeon RX 7800 XT TUF Review 19

ASUS Radeon RX 7800 XT TUF Review

Value & Conclusion »

Overclocking

GPU-Z Screenshot for Overclocked Graphics Card


Overclocking is pretty complicated, just like on other RDNA 3 cards. Just adjusting the clock frequencies will have no significant performance impact.
  • First of all, you should raise the power limit to the maximum of +15%, to make sure that's out of the way.
  • Next, set the maximum clock range to the maximum of 5000, so that doesn't limit us either.
  • Now set the minimum clock to 2800 (don't set it too high or the card will crash). If later on you notice that clocks during testing seem stuck around that mark, you can raise it further to 3000 and 3200. This really doesn't set actual minimum clock, but rather acts as some sort of guidance for AMD's clocking algorithm.
  • From here on slowly reduce maximum voltage until your card becomes unstable running benchmarks or games. Undervolting is a must for RDNA 3, because that will free up some power headroom for the clock algorithm to push frequencies higher. These cards typically get unstable around 950 mV, so there's a lot of headroom (the default is 1.15 V).
  • Once that is finished, bump up the voltage by 50 mV (to ensure there's no GPU clock instability). Now set memory to 2600 MHz and work your way up in steps of 10 or 20 MHz. When running stability testing the memory will just crash at some point, there's no artifacts or slowdowns.
  • With maximum memory figured out, restore your undervolt and start playing games
  • If you notice any instability, increase voltage by 10 mV, or lower memory OC a little bit. No need to touch the clock sliders.
Maximum Overclock Comparison
Avg. GPU ClockMax. Memory ClockPerformanceMin Voltage
AMD RX 7800 XT2721 MHz2630 MHz66.4 FPS970 mV
ASRock RX 7800 XT Phantom2878 MHz2640 MHz68.7 FPS930 mV
ASUS RX 7800 XT TUF2846 MHz2650 MHz68.1 FPS910 mV
PowerColor RX 7800 XT Hellhound2831 MHz2610 MHz67.9 FPS920 mV
Sapphire RX 7800 XT Nitro+2936 MHz2640 MHz69.5 FPS850 mV
XFX RX 7800 XT Merc 3192727 MHz2640 MHz67.8 FPS940 mV
ASUS RX 7700 XT TUF3133 MHz2530 MHz59.5 FPS770 mV
Sapphire RX 7700 XT Pulse3025 MHz2520 MHz58.2 FPS810 mV
XFX RX 7700 XT Qick3193133 MHz2540 MHz59.2 FPS750 mV
Testing notes & interpretation
  • Overclocking results listed in this section are achieved with the default fan, power, and voltage settings as defined in the VGA BIOS. We choose this approach as it is the most realistic scenario for most users.
  • Each GPU, including each GPU of the same make and model, will overclock slightly differently based on random production variances.
  • The data in this table shows comparable overclocks using identical conditions from previous TechPowerUp reviews.
  • The Average GPU clock frequency reported in the table is an actual measurement of the clock speeds during 3DMark Time Spy Extreme GT1. Making a "maximum overclock" comparison just based on the "rated" clocks in GPU-Z will be inaccurate—actual frequencies is what matters.

Overclocked Performance

Using these clock frequencies, we ran a quick test of 3DMark Time Spy GT1 to evaluate the gains from overclocking.

Overclocked Performance Unigine Heaven
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Nov 6th, 2024 22:13 EST change timezone

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