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Yeah, nice: > I get the general impression that the AMD CPU has higher power consumption in all regards: the baseline is higher, the spikes are higher (peak co
by itvision 1y ago
Yeah, nice:
> I get the general impression that the AMD CPU has higher power consumption in all regards: the baseline is higher, the spikes are higher (peak consumption) and it spikes more often / for longer.
> Looking at my energy meter statistics, I usually ended up at about 9.x kWh per day for a two-person household, cooking with induction.
> After switching my PC from Intel to AMD, I end up at 10-11 kWh per day.
It's been the bane of desktop AMD CPUs since Zen 1. Hopefully AMD will address this in Zen 6 but I don't have too much hope.
- TinkersW 1y agoI wonder why the idle power is so high(55 watts), I have measured a beelink mini PC with an 8 core Zen4 when idle, and it was 10 watts.
- itvision 1y ago> I have measured a beelink mini PC with an 8 core Zen4 when idle, and it was 10 watts. Zen APUs have no such issue. My 7840HS idles at 3W when plugged in and around 0.5W when running on battery power.
- rkrisztian 1y agoIt's the 3D cache, as I wrote in my other response. It has to be powered on at all times, so it affects even the idle power usage.
- itvision 1y agoIt has little to nothing to do with the 3D cache. The IOD (die) is extremely inefficient for all desktop Zen CPUs as it never truly idles.
- jonbiggums22 1y agoTheir APUs don't have the problem from the reviews I've seen, but yes the I/O die has been the bane of the Zen platform when it comes to idle power consumption. To make matters worse, the x570 chipset basically runs this I/O die upside down as a chipset and sucks twice as much power at idle as the x470 chipset it replaced. I expected them to replace this hack of a product used for the high end when Asmedia's efforts were delayed but all that platform got was B550. It was pretty clear they weren't chasing this part of the market during AM4's heydey, no real idea where they are at now with chipsets on AM5. But given few people talked about how crappy that chipset was in this respect I guess they might be right it wasn't important to most people.
- rkrisztian 1y agoWhat are you talking about? AMD has been really good at the power efficiency department until the 3D CPUs that use extra power for cache memory that simply cannot be turned off. Plus, Intel started applying the 3nm fabrication process, while AMD is still at 4nm. But previously, Intel was at 10nm for a long time, see i9-13900K for example, while Ryzen went to 5nm much sooner, see Ryzen 9 7900x.
- itvision 1y agoNothing, I'm making this up, except it's been confirmed by pretty much all desktop Zen users: https://www.reddit.com/r/Amd/comments/1brs42g/amd_please_tackle_idle_power_consumption_for/ https://www.reddit.com/r/Amd/comments/1brs42g/amd_please_tac... I don't bloody care that AMD CPUs seem to be more power efficient than Intel's. For most people their CPUs are completely idle most of the time and Zen CPUs on average idle at 25W or MORE. Many Zen 4 and Zen 5 owners report that their desktop CPUs idle at 40W or more even without the 3D cache.
- rkrisztian 1y agoPlease someone flag the comment above for offensive language ("I don't bloody care")
- rkrisztian 1y agoI can't confirm the 40W, my Ryzen 9 7900 (non-X) consumes 1W to 3W at idle on Windows 10.
- itvision 1y agoPlease post a HWiNFO64 screenshot. I have reasons to believe you're making this up. Not a single user has seen such low idle power consumption for desktop Zen AMD CPUs.
- rkrisztian 1y agoSure, it's reported by the Radeon Software, but I'll check HWiNFO64 soon and post a screenshot.
- FuriouslyAdrift 1y agoThe 9950X3D is equivalent to the Intel Core Ultra 9 285K which uses even more power. The X3D series are extreme gaming chips.