Re: ANN: BITMAIN has Tested Its 28nm Bitcoin Mining Chip BM1382

I will probably get the S1 upgrade kit instead Tongue

Let's guess the HR of overclocked S3, 520GH/s for me Roll Eyes

My guess is 575GH/s

..."BM1382 has achieved 15.75 Gh/s in hash performance, consuming less than 9.33 W on chip level at 0.75V"...

Let's do some math...:

9.33W / 0.75V = 12.44Amps ...per chip...

16 chips per blade * 12.5Amps = 200Amps per blade ...

NEEDS hell-of -a-POWER Section on the blades... Grin

I do NOT expect that BitMain will design S3 Power section with a lot of reserves...if any...

IMHO overclocking S3 will be a challenge...if possible at all...1-2-3% max...

Not even taking PSU in consideration...

ZiG

My goal is pencil mod undervol underclock getting 450gh at 300 watts which is .667 watts a gh vs .78 watts a gh.

If this can be done they will be really quiet and truly good spaceheaters. I will put I in each room for the winter my house will be warm and toasty. And difficulty could be at 110 vs the current 13.4 and they would still be worth running.

If there is that many chips 16 per hash board then how can 490 watts ever supply 200 amps @ 12v? Huh

Thats 200 Amps @0.75V not @12V

As noted, the initial calculations are wrong above. My 850W PS that has a single rail that supplies 70 amps at 12V will power 2 S3s if the 390 W spec from Bitmain is correct (which I'm sure it is). Amperage from the wall at 120 V will be less than 8 amps. A common 20 amp/120 V circuit will easily power 4 S3s.