If you think the old rule counts here too, that the GPU is the most formidable price driver on the power grid, you’re slightly mistaken. Because we’ll see in a moment that the GPU in Ultra-HD doesn’t make up for what you’re now saving on the slightly underutilized CPU. At least not the Radeon RX 6900XT.
Intel Default (125 Watt / 251 Watt)
Just take a look at the graph below, where the appearance has completely changed. Longer, but not quite as pronounced load peaks are now the rule, not the exception. Here, the CPU and GPU also correlate a bit better with the loads again. It’s almost always under 600 watts, only isolated peaks march up to the 750 watt mark.
The CPU pulses at about 65 watts as an average, which only looks nice and low at first glance. Because even now there are still massive peaks to well over 200 watts. The average value alone certainly serves as reassurance and a cost brake, but it does not reduce potential problems at the power supply.
If we look at a rather arbitrarily selected 20-ms section here, then it is easier to see from where to where the electrical journey goes. The RX 6900XT is inherently a bit weaker in Ultra HD. The GeForce can do that much better. But all in good time.
For a better distinction, once again the single curve before I turn to the 288 watt limit.
“Tower Air Cooler with 288 Watt Limit
Since here already clearly limits the GPU. the Core i9-11900K’s larger limit doesn’t help either. It doesn’t get faster, but it doesn’t get thirstier either. The picture of the curves looks very similar.
Even just looking at the CPU, everything remains the same.
The zoomed out small interval can then also no longer frighten, on the contrary. Even a better 650 watt power supply can do such things easily.
The load peaks also go up to about 240 watts, but only sporadically.
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