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Author Topic: 7970 from newegg $405  (Read 4944 times)
zvs
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May 02, 2012, 12:04:57 AM
 #61

1) I agree here if you were a dedicated miner who just vents their air outside, but undervolting makes sense who pay electrical and cooling costs (ie. their cards are in a gaming machine). At that point your net revenue may come pretty down close to 0 after cooling costs unless you undervolt.

That is nonsense.  Gross revenue is currently ~4x electrical cost.  Even with 30% overhead for cooling it is >2x.  Undervolting doesn't improve profits.  Undervolting is useful in large farms where you simply can't handle the heat.  I updated post above to show that.
Yeah, not quite sure why some of these ppl seem more concerned with efficiency than profitability.  *scratch*   But, then, I guess you also have people loading up with 7970's that will decrease in value like nobody's business, so..

Couple months ago, I never undervolted.   Now I do so during the day only, because of heat issues (considering different solutions as to where I wouldn't have to do this).  Then, I'm speaking from a perspective of anyone that gets electricity for, oh, I don't know, probably 15-20c or so or less.  I pay ~8-9c per kwh.

Dacentec, best deals for US dedicated servers. They regularly restock $20-$25 Opterons with 8-16GB RAM & 2x1-2TB HDD's (ofc, usually lots of other good stuff to choose from).  I did a Serverbear benchmark of one of my $20/mo Opteron (June last year), it's here.  Have had about a half dozen different servers with Dacentec, & none have failed to sustain at least 40MB/s (burst higher). My favorite is a 12-month rent-to-own ZT Systems 2XL5520 16GB 2x2TB SATA for $40/month (got lucky with the 'off-brand', haven't seen a RTO 2xL5520 for under $50/mo since -- at least for monthly contracts).  wholesaleinternet.com has some ancient 2-core intel CPUs @ $10/mo sometimes (I got an Intel Core 2 6300 @ 1.86GHz, with a 250GB HDD with 46000 hours on it, LOL. $20 @ Dacentec is much better, if you can grab one). joesdatacenter.com (same location as Wholesale Internet) also occasionally has specials (or if you don't want to wait, it has an AMD Opteron 170 @ $16/mo).
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