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AMD and Intel are jacking up the default power settings to absurd levels because it gives marketing bigger numbers to to throw around. You can drastically redu

AMD and Intel are jacking up the default power settings to absurd levels because it gives marketing bigger numbers to to throw around. You can drastically reduce the power you supply to desktop chips with BIOS settings. You'll generate far less heat, can use a smaller power supply and form factor, while still getting great performance. If Intel/AMD get to a level where their chips rival M1/M2 while power throttled, things get interesting.

jerrygenser 3y ago
In general both on my own benchmarks and from what I've read/seen youtube videos, it's about a 5% performance loss multithreaded with full core saturation and 0-1% performance haircut on single threaded -- since on single threaded you are generating lower enough heat not to go near the high end. For me this was going from 105W to 65W on my 7700X and my results were similar. Not sure how it would look or work with Intel though.
Lapha 3y ago
Both companies are juicing up the default power limits which absolutely matters if you're concerned about total Wh for sustained loads, thermal considerations, PSU rating, noise, etc, as you mentioned, but to be fair to AMD here they've released an eco mode on the 7000 series which does lower the default power limit quite substantially. You could do this before with manual adjustments to voltage and clock speeds, but now it's a simple toggle. Another point is that in terms of power efficiency AMD are absolutely mopping the floor with Intel, where even older high power R9s are consistently outperforming Intel's lower power i5 and i7s by a wide margin. This sort of discussion is often left out of reviews which only look at TDP or peak wall power. It's still not ARM levels of efficiency, but x86 vs ARM or even desktop vs laptop efficiency is an entirely separate conversation.
ilyt 3y ago
I have 120W TDP chip on default settings and it only ramps up to the max in rare cases like compiling shaders for RPCSX3 > If Intel/AMD get to a level where their chips rival M1/M2 while power throttled, things get interesting. For laptop users, maybe. For desktop extra 40W literally doesn't matter.

jerrygenser 3y ago

In general both on my own benchmarks and from what I've read/seen youtube videos, it's about a 5% performance loss multithreaded with full core saturation and 0-1% performance haircut on single threaded -- since on single threaded you are generating lower enough heat not to go near the high end. For me this was going from 105W to 65W on my 7700X and my results were similar. Not sure how it would look or work with Intel though.

Lapha 3y ago

Both companies are juicing up the default power limits which absolutely matters if you're concerned about total Wh for sustained loads, thermal considerations, PSU rating, noise, etc, as you mentioned, but to be fair to AMD here they've released an eco mode on the 7000 series which does lower the default power limit quite substantially. You could do this before with manual adjustments to voltage and clock speeds, but now it's a simple toggle. Another point is that in terms of power efficiency AMD are absolutely mopping the floor with Intel, where even older high power R9s are consistently outperforming Intel's lower power i5 and i7s by a wide margin. This sort of discussion is often left out of reviews which only look at TDP or peak wall power. It's still not ARM levels of efficiency, but x86 vs ARM or even desktop vs laptop efficiency is an entirely separate conversation.

ilyt 3y ago

I have 120W TDP chip on default settings and it only ramps up to the max in rare cases like compiling shaders for RPCSX3 > If Intel/AMD get to a level where their chips rival M1/M2 while power throttled, things get interesting. For laptop users, maybe. For desktop extra 40W literally doesn't matter.