Homelab

380 readers

9 users here now

Rules

Be Civil.
Post about your homelab, discussion of your homelab, questions you may have, or general discussion about transition your skill from the homelab to the workplace.
No memes or potato images.
We love detailed homelab builds, especially network diagrams!
Report any posts that you feel should be brought to our attention.
Please no shitposting or blogspam.
No Referral Linking.
Keep piracy discussion off of this community

founded 1 year ago

MODERATORS

[email protected]

Old server hardware - R710 vs R730 power efficiency? (alien.top)

submitted 11 months ago by [email protected] to c/[email protected]

27 comments fedilink hide all child comments

Wondering if anyone has a feel for the power efficiency of older server hardware. I'm reading posts from people who say they have R710 with lots of hard drive and it IDLES at 160W with 8 hard drives. So...if you take the hard drives out of the equation, it's probably still like 120W. Is that just how inefficient old computers are? Kinda like incandescent bulbs are less efficient than LED bulbs? How efficient is the R730 compared to the R710?

My 6 year old desktop computer is 60W idle with a GPU, and 30W idle without the GPU. Seems like a huge difference. It's like $70 more per year to run a R710 than my old desktop with a GPU. Is that correct?

you are viewing a single comment's thread
view the rest of the comments

[–] [email protected] 1 points 11 months ago (1 children)

I have an r930.

With 4x e7-8890 v4’s. 9ssd’s 2x SAS drives 4x m.2 drives on a pcie card 512gb of ram across 32 ram sticks

Pulls about 400w like all the time even at idle.

[–] [email protected] 1 points 11 months ago (2 children)

Holy cow. What's driving half of that wattage? Is it the 32 sticks of ram? Or the 4 cpu?

Your server is 75% of my entire house power, including my server.

[–] [email protected] 1 points 11 months ago

Well, a DDR4 RAM stick would use 2-4W, so 32 sticks is 64-128W alone. 4 CPUs don't help either. :)

Given it's only 512MB, it could be achieved with just 8 64GB modules, which would save a bit of power, but that's also a lot of money to put into what is after all somewhat obsolete hardware. (And I say that running a v4 Xeon as well :P)

[–] [email protected] 1 points 11 months ago

I forgot there is also a gtx 1650 in there as well.

But honestly. I’m fairly sure the majority of the power draw is the 4 CPU’s.

96 cores and 192 threads on older architectures was a bit of a power suck. If I had it all to do over again I would for sure have gotten an epyc chip instead.