Sapphire RX 7900 GRE Nitro+ Review

Name: Sapphire RX 7900 GRE Nitro+
Brand: Sapphire
Price: 600 USD

W1zzard

on Feb 26th, 2024,

in Graphics Cards.

Manufacturer: Sapphire

Value & Conclusion »

Overclocking

GPU-Z Screenshot for Overclocked Graphics Card

(the correct ROP count is 160, this is a bug in GPU-Z that will be fixed in next release)

Overclocking the Radeon RX 7900 GRE is very similar to the other RX 7900 Series cards.

To start, you have to raise the power limit to maximum, the slider ends at +15%
Next, max out the memory clock slider, it's rather short, topping out at 2316 MHz, definitely not high enough to use the full potential of the memory chips.
Now, also increase "Max Frequency" to maximum, which is at 2803 MHz, not much higher than the default of 2530 MHz, another artificial limitation
At this point run a first stability test and record performance.
Now gradually lower the maximum voltage (default is 1.05 V), until your card becomes unstable, which happened for me at 0.89 V to 1.02 V, depending on the card.
Increasing the Min Frequency slider made no significant difference in performance. This might increase power consumption though for very little actual FPS improvement.

Maximum Overclock Comparison
	Avg. GPU Clock	Max. Memory Clock	Performance	Max Power Limit
ASRock RX 7900 GRE Steel Legend	2802 MHz	2316 MHz	72.9 FPS	300 W / 345 W / +15%
Sapphire RX 7900 GRE Nitro+	2748 MHz	2316 MHz	74.8 FPS	305 W / 351 W / +15%
Sapphire RX 7900 GRE Pulse	2718 MHz	2316 MHz	74.7 FPS	270 W / 311 W / +15%
Sapphire RX 7900 GRE Pure	2734 MHz	2316 MHz	75.1 FPS	275 W / 320 W / +15%