| ▲ | itvision 4 days 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 3 days ago | parent | next [-] |
| I 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 3 days ago | parent | next [-] | | > 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 3 days ago | parent | prev [-] | | It'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 3 days ago | parent [-] | | It 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 3 days ago | parent [-] | | Their 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. |
|
|
|
|
| ▲ | FuriouslyAdrift 3 days ago | parent | prev | next [-] |
| The 9950X3D is equivalent to the Intel Core Ultra 9 285K which uses even more power. The X3D series are extreme gaming chips. |
|
| ▲ | rkrisztian 3 days ago | parent | prev [-] |
| What 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 3 days ago | parent [-] | | Nothing, 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_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 3 days ago | parent | next [-] | | I can't confirm the 40W, my Ryzen 9 7900 (non-X) consumes 1W to 3W at idle on Windows 10. | | |
| ▲ | itvision 3 days ago | parent [-] | | Please 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. | | |
| ▲ | exceptione 3 days ago | parent | next [-] | | Could it be that that some cores are constantly being waked up by something? I mention that since you seem to be on Windows, which itself has a hard time to just shut up, but that is also easily paired with bad drivers, stupid software and bad peripherals. | | |
| ▲ | itvision 3 days ago | parent [-] | | > I mention that since you seem to be on Windows, which itself has a hard time to just shut up, but that is also easily paired with bad drivers, stupid software and bad peripherals. I happen to be on Fedora Linux 42 and Windows 11 but my primary OS has been Linux for almost 30 years now. Idle power consumption under Windows and Linux is exactly the same. Linux doesn't have any magical tricks to make it lower. Windows has more services running in background but they don't meaningfully affect idle power consumption at all. The entire Reddit topic confirms my statement, multiple over hundreds of reviews confirm what I said, yet it's > paired with bad drivers, stupid software and bad peripherals. It's kinda hard to be an AMD fan when you live in an alternative reality, huh? | | |
| ▲ | exceptione 3 days ago | parent [-] | | > It's kinda hard to be an AMD fan when you live in an alternative reality, huh?
I don't know, as I am not too much intimate with both concepts. I meant to say if both measure idle power but come with different results, are they measuring the same? Could hardware and software differences influence idle power? What values does an "idle power reading" measure actually? |
|
| |
| ▲ | rkrisztian 3 days ago | parent | prev [-] | | Sure, it's reported by the Radeon Software, but I'll check HWiNFO64 soon and post a screenshot. | | |
| ▲ | itvision 3 days ago | parent | next [-] | | 52 minutes to post a screenshot? Guess someone doesn't want to be embarrassed. | | |
| ▲ | rkrisztian2 3 days ago | parent [-] | | Someone flag this comment for insult. I was at work, was taking a break, I wasn't on my personal computer. | | |
| ▲ | rkrisztian 3 days ago | parent | next [-] | | I am treated so unfairly, it's unbelieavable. People with insults get away without punishment, but my innocent screenshot is invisible. | |
| ▲ | rkrisztian 3 days ago | parent | prev [-] | | I posted my screenshot yesterday but it's not visible. I don't care anymore. |
|
| |
| ▲ | rkrisztian2 3 days ago | parent | prev [-] | | [dead] |
|
|
| |
| ▲ | rkrisztian 3 days ago | parent | prev [-] | | Please someone flag the comment above for offensive language ("I don't bloody care") |
|
|
