GPUsNews

AMD Radeon RX 7900 XTX Draws 81% Less Power with FreeSync Enabled

Some interesting information regarding AMD’s Radeon RX 7900 XTX has come to light. The RDNA 3 flagship is known to draw excessive amounts of power when idle. Although AMD has released a driver fix, the ambient consumption remains higher. ComputerBase has inadvertently discovered the solution to this longstanding problem. Turn on FreeSync or, in Windows terms, Variable Refresh Rate.

4K144
desktop idle
4K144
dual monitor
4K144
window movement
4K144
YT, SDR, 60fps
4K144
YT, HDR, 60fps
Radeon RX 6700 XT
Old measurement
34 watts34 watts43 watts40 watts45 watts
Radeon RX 6700 XT
New measurement
8 watts
(-76 percent)
34 watts
(+-0 percent)
41 watts
(-5 percent)
38 watts
(-5 percent)
43 watts
(-4 percent)
GeForce RTX 3060 Ti
old measurement
18 watts24 watts43 watts27 watts42 watts
GeForce RTX 3060 Ti
New measurement
17 watts
(-5 percent)
24 watts
(+-0 percent)
38 watts
(-12 percent)
28 watts
(+4 percent)
36 watts
(-14 percent)
Arc A770
Old measurement
44 watts46 watts56 watts59 watts69 watts
Arc A770
New measurement
48 watts
(+9 percent)
50 watts
(+9 percent)
62 watts
(+11 percent)
59 watts
(+-0 percent)
66 watts
(-4 percent)
Radeon RX 6800 XT
Old Measurement
43 watts43 watts54 watts49 watts52 watts
Radeon RX 6800 XT
New measurement
9 watts
(-79 percent)
43 watts
(+-0 percent)
45 watts
(-17 percent)
47 watts
(-4 percent)
51 watts
(-2 percent)
GeForce RTX 3080
old measurement
21 watts23 watts50 watts33 watts48 watts
GeForce RTX 3080
New measurement
24 watts
(+14 percent)
31 watts
(+35 percent)
45 watts
(-10 percent)
34 watts
(+3 percent)
43 watts
(-11 percent)
Radeon RX 7900 XTX
Old measurement
104 watts105 watts111 watts72 watts109 watts
Radeon RX 7900 XTX
New measurement
20 watts
(-81 percent)
30 watts
(-71 percent)
71 watts
(-36 percent)
68 watts
(-5 percent)
75 watts
(-31 percent)
GeForce RTX 4080
old measurement
16 watts25 watts36 watts26 watts38 watts
GeForce RTX 4080
New measurement
20 watts
(+25 percent)
28 watts
(+12 percent)
36 watts
(+-0 percent)
27 watts
(+4 percent)
40 watts
(+5 percent)

The idle power consumption on the Radeon RX 7900 XTX with a 4K 144Hz monitor dropped by 81% upon enabling FreeSync. A double-monitor setup saw a drop of 71%, while playing YouTube on the former with HDR was 31% more efficient. The older RDNA 2 GPUs also benefitted the same way from Variable Refresh Rate.

The Radeon RX 6800 XT was 79% more efficient at 4K 144Hz, while the RX 6700 XT experienced a drop of 76% in power consumption. Interestingly, the GeForce cards see an increase in power intake with Adaptive Sync Enabled. The RTX 4080 draws 25%, while the RTX 3080 draws 14% more power.

That said, the GeForce cards report roughly the same power consumption as their Radeon rivals when Variable Refresh Rate is enabled. The RTX 4080 and RX 7900 XTX both average 20W when idle. The former is significantly more efficient when playing YouTube or some other light activity. At 4K 144Hz HDR, the RTX 4080 sips 40W while the RX 7900 XTX ups that number to 75W.

The Radeon RX 6800 XT, on the other hand, is about as efficient as the RTX 3080 when playing YouTube. Both GPUs report a power consumption of 40-50W at 4K 60 FPS with Adaptive Sync enabled.

Areej Syed

Processors, PC gaming, and the past. I have been writing about computer hardware for over seven years with more than 5000 published articles. Started off during engineering college and haven't stopped since. Mass Effect, Dragon Age, Divinity, Torment, Baldur's Gate and so much more... Contact: areejs12@hardwaretimes.com.
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