I've successfully migrated our SP30s over to our 258V supply. Performance is up.
| Device ID | Hashrate (cgminer) | AC power usage | Top PSU lim (DC) | Bot PSU lim | J/GH |
| Mine | 4527 GH/s | 3024 W | 1362 | 1367 | 0.668 |
| Wanna1 | 4476 GH/s | 2928 W | 1345 | 1351 | 0.654 |
| Wanna2 | 4459 GH/s | 2960 W | 1344 | 1347 | 0.663 |
| Wanna3 | 4470 GH/s | 2992 W | 1349 | 1349 | 0.669 |
Thank you for the review. It seems that the competition is spreading lies about SP30 power consumption.
If you are talking about the knc newsletter, it is badly researched.
0,57 J/GH - KNC Neptune - 1950 watts at 3400 GH/s (reported average)
0,62 J/GH - Bitfury BF3500 - 2200 watts, 3500 GH/s (stated, unconfirmed)
0,76 J/GH - Spondoolies SP30 - 3200 watts at 4200 GH/s (reported average)
It also claims bitfury be 3500 does 0.62J/GH, which not even bitfury themsleves claim (it is ~0.775)
I find it pathetic.
We're overclocking the extreme slow corners 28nm ASICs we got. The power ratio for October units will be 0.55 W/GHs