I have some spent my afternoon to do some Heavy gaming comparing the power draw of the 6600XT vs my 6700XT.
Same Game conditions (bunch of Simracing titles like AMS2, PC2 and ACC) focusing on OC/UV settings to minimize power consumption
Triple 1080p with Freesync @75hz Max draw 6700XT 120W 6600XT 135W
720p Plasma upscaled to 1440p @60Hz Max draw 6700XT 100W 6600XT 80W
Good purchase with the 6600XT - and thanks for these numbers!
Mid-range RDNA2 cards are amazingly efficient. I have a 6600XT from AsRock, the Phantom Gaming D model, running stock clocks and voltage. I haven't tested it in the latest games, as I don't play them, but I do have some numbers for power consumption. I'm also running a 3300X oc'd to 4.5 GHz on all cores, powered by a Platinum rated PSU.
In idle, the GPU uses mere
3w. The whole system consumes just
38w, as measured at the wall. I ran the Forza Horizon 4 benchmark at 1080p with V-sync on and all detail settings maxed out manually. On average, the whole system was consuming
110w at locked 60 fps.
As I don't buy into the "144+ fps or bust" craze and play mostly old titles, the 6600XT is more than enough for my gaming needs