Idle Power Consumption: Think I made a mistake on CPU choice as home server... - Overclock.net - An Overclocking Community

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Idle Power Consumption: Think I made a mistake on CPU choice as home server...

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post #1 of 17 (permalink) Old 09-18-2019, 05:53 AM - Thread Starter
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Idle Power Consumption: Think I made a mistake on CPU choice as home server...

Long story short: I had a Core i7 3770k (4-core) set up as a multi-purpose Server, and a Core i7 4930k (6-core) as my Gaming PC. I decided to pull the trigger on a Ryzen 3900x as a new gaming PC. I haven't upgraded my gaming rig/CPU in over 7 years and wanted some of the newer motherboard feature upgrades / future proof with extra cores. I ended up moving the 4930k system over as a server to have a beefier server, and to get rid of the 3770k. This was my plan all along.

Welp... I should have realized this and I overlooked it. The total system idle wattage on the i7 3770k was <18w which was nice. With the i7 4930k, Total system idle wattage is over 80W. This is even with offset voltages (around .90v when idle) and balanced power plan. I had to look into it, and confirmed after reading multiple review websites, a system with 4930k CPU/mobo indeed idles between 80-100w. I guess I never realized this because my gaming PC wasn't on 24/7 and only on when Gaming, so never really cared about wattage.

I suppose I could deal with this for a year or so, but having 80-100w Idle long term does not make sense for a home server considering there are more viable options out there these days. Hell, I bet there are 8 core systems out there with a fraction of that idle usage and higher IPC...

What are your guys thoughts / suggestions on a CPU/system with low idle consumption like my 3770k had, but with more cores...

Figured I'd ask here for recommendations based on personal experiences and not just review sites. The server is running basic stuff, nothing too CPU intensive mainly 1 Virtual Machine (with a VPN), Plex, VOIP Voice program.

Thanks!
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post #2 of 17 (permalink) Old 09-18-2019, 06:29 AM
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Hi,
You could if you haven't already disable two cores
Clocks are oddly the same on both chips.

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post #3 of 17 (permalink) Old 09-18-2019, 07:44 AM
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Holy cow that's a huge jump. Is it more the chipset than the CPU itself? I think I recall the 4xxx series being the first with FIVR on the CPU but my understanding was that it could lower overall power consumption.
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post #4 of 17 (permalink) Old 09-18-2019, 07:59 AM
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It's not the fivr. My mini itx has a 65w max cooler and has no problem keeping cool under load much less idle. I don't turn it off either.

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post #5 of 17 (permalink) Old 09-18-2019, 08:05 AM
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Wow 18W is really low.

My 7700K gets down to 65W which I thought was good. I guess I do have a GPU, 5 fans (low rpm) and 6 disks installed (HDDs spun down when at 65W).

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post #6 of 17 (permalink) Old 09-18-2019, 08:25 AM
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My 3770k system was at 80W Idle and the 3700X system is at 68W Idle. So it's not like the 3770k will give <50W idle system consumption in general.
Most of the Idle consumption has to do with Mainboard, GPU and PSU.
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post #7 of 17 (permalink) Old 09-18-2019, 09:04 AM
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I use an old laptop for my home server precisely because it is so power efficient. It's just an old i3 processor with plenty of capability for the simple things I'm using it for. Sure it wasn't designed for 24/7 use, but it's held up for years so far.

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Last edited by briank; 09-18-2019 at 09:16 AM.
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post #8 of 17 (permalink) Old 09-18-2019, 10:01 AM
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What are you doing on your server? a 3770k is a pretty beasty home server

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post #9 of 17 (permalink) Old 09-18-2019, 10:57 AM
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18W idle on 3770K whole system? I call royal nonsense. It's for sure about 80W or more.

My guess is you're looking at the unusable software power consumption monitoring and are not using a power wall meter, the same meter for both tested systems.
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post #10 of 17 (permalink) Old 09-18-2019, 11:28 AM
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ok, after a nap, maybe i shouldn't post while drinking . .
Spoiler!

Remember the golden rule of statistics: A personal sample size of one is a sufficient basis upon which to draw universal conclusions.
Upload the computer to Dropbox and provide a link to it so others may download it to examine and give advice for repairs.
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Last edited by looniam; 09-18-2019 at 05:05 PM.
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