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I’ve picked up a second hand Dell R720 last year. Best purchase in years. It cost me €1500 for 48 cores and 192GB RAM.
by rad_gruchalski 5y ago
I’ve picked up a second hand Dell R720 last year. Best purchase in years. It cost me €1500 for 48 cores and 192GB RAM.
- christophilus 5y agoI want one. What’s it done to your electricity bill, though?
- kirubakaran 5y agoR820s idle at ~200W and consume ~500W at 100% CPU load on all 80 virtual cores.
- christophilus 5y agoSo, if we say it draws around 350W, that makes it around $32 /mo power (rough calculation based on a 12.5cent (US) kWh rate, right? Not bad for all that beef.
- superleo2020 5y agoAnd for Western Europe readers as a comparison... UK <Apr2022 = £50.96 ($68 USD), £0.2022 price cap rate UK >=Apr2022 = £76.16 ($102 USD) £0.3022 likely new price cap rate Thus the reason r/homelab users in Europe tend not to have Craigslist blade servers of any sort!
- axiolite 5y agoIf you want to use 4Kn drives, SSDs (w/trim), or easily switch between RAID and HBA modes, I would recomend an R730 with H730 controller instead. They're available on eBay with 128GB of RAM for just over $1,000 USD. If you don't want those features, an R720 is a good choice, and around half the price. Idle power consumption of an R730 with no drives is typically about 85W, though higher-end CPUs drive that up a bit. The older R720s are a bit higher in the 100W range. When the extended warranties expire, high-spec 2nd hand equipment floods the market.
- rad_gruchalski 5y agoYes, R730 would have been better. I learned that post fact.
- axiolite 5y agoNot criticizing at all. The R720s are still excellent servers. You can add a different RAID/HBA controller into an R720, flash LSI firmware onto the one you've got, or just put a bit more effort into ensuring you buy compatible drives. SAS SSDs just a few years old didn't even have TRIM, for example.
- rad_gruchalski 5y agoYeah, I believe it’s possible to fit the perc controller from r730 to r720 so that the throughput goes up to 6mbps but I just couldn’t be bothered.
- justsomehnguy 5y agoJust checked one of ours R620, dual E5-2690 v2 @ 3.00GHz, 256Gb RAM. 20% load (9 VMs with 11GHz usage), 196W. Historical trends for Last Week: Avg: 203 W | 693 BTU/hr Max: 279 W | 952 BTU/hr Min: 150 W | 512 BTU/hr Historical Peaks: 465 W Cumulative Reading: Since Mon Jul 13 11:32:33 2020 2723.893 kWh