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Author Topic: advice on 7970 sapphire for mining  (Read 2047 times)

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Offline qwerty55Topic starter

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advice on 7970 sapphire for mining
« on: May 29, 2013, 08:17:13 AM »
  I just purchased the Sapphire 7970. Overclocked to 1,000mhz with AMD powertune with BOOST (whatever that means ..can anyone explain?) with a view to mining.

In the Philippines there are no 7990's so this 7970 cost approx US$450. There are few miners here so there is no local source that can offer advice.

1 what mhash should I get from this as it stands?

2 What improvement could I get from it and what should I do to get this improvement?

3 By altering factory settings does it bring other problems , like more frequent crashing?

thanks for any help


Offline btcrep

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Re: advice on 7970 sapphire for mining
« Reply #1 on: June 05, 2013, 02:47:07 AM »
Can't say for certain, but I'll tell you this - I ran a 4 GPU miner for some time and as much as my friend/partner (we went 50/50 on it) was pushing to overclock the heck out of it, we ultimately found that we got the it was the most efficient on a hashes to watt basis to underclock the cards  and the RAM slightly. We sold it a while back, but I'd be willing to bet that doing so also would have improved its useful life.

The rig (CPU, Motherboard, RAM, GPU's and powersupply) are a one time cost that you can amortize across the entire useful life of the machine. Electricity costs, though, represent an ongoing expense, taking a fair-sized bite out of your earnings each month. Taken that way, just generating the most coins you possibly might not be the best course of action, but you'll have to do some experimenting on your own to figure out what will ultimately be best for you and your rig.


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