3 ms·
> $500 + $87 600 100W * $0.10/kWh * 1 year = $87.66 You forgot to convert Wh to kWh. Google can evaluate the LHS in one step. That aside, I agree. The price
by NavinF 4y ago
> $500 + $87 600
100W * $0.10/kWh * 1 year = $87.66
You forgot to convert Wh to kWh. Google can evaluate the LHS in one step.
That aside, I agree. The price difference is even larger with 400W GPUs and data center bills which include cooling in the electricity cost. Initial cost matters very little vs efficiency.
- vbezhenar 4y agoWell, I guess that my conclusions were completely wrong for home usage. Spending $87 vs $8 per year is not a big deal and $500 CPU cost now dominates the total cost. So it makes sense to donate idle CPU time if you're fine with extra heat and some extra wear.
- NavinF 4y agoIMO the “extra wear” is insignificant. Electromigration causes negligible wear compared to the thermal cycling of a typical gaming workload on a desktop GPU. Your conclusion was correct even if the math was off.
- implements 4y agoIt was well worth making the point, though. I recently bought a 2nd hand Intel NUC as a potential home server. Came with Ubuntu and used about 10 watt on idle. Put OpenBSD on it and it now draws 20 watt - I assume because OBSD is much less aggressive about idling. That’s about £3 per month extra on electricity if run 24/7.
- NavinF 4y agoEhh normally you’d want a home server to have a handful of SATA ports and enough PCIe lanes for a SAS card and GPU. If you’re spending 5W per HDD and hopefully in the future hundreds of watts for video transcoding, 20W for everything else is no big deal. Anyway I’ve never used OpenBSD, but you can probably mess with the CPU governor settings to make it idle more aggressively.