My initial Radeon HD 7970 mining benchmarks

[Fiyasko]

Can people post room temperatures also with gpu and %fan. As room temp has pretty huge impact on %fan.

Yeah i agree,
My temps waver by an entire 5° throughout the day, And somepeople may live in cold climated where there "normal" temp inside thier how's is 18°
I live in canada, My home's temp is average 19-20°, Feels hot.

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[Anvi]

Sapphire 7970 - Using phoenix 1.7.3
I'm getting:
550MH/s on 925MHz GPU / 340 MHz memory
712MH/s on 1200MHz GPU / 340MHz memory

Bumping mem to default 1375MHz adds like 5MH/s so I don't really see the point.
I haven't found the lowest stable point for GPU voltage yet, but it seems to be approx 1000mV for 925MHz/340MHz.

Now waiting for optimized kernels

[tonto]

My Catalyst GUI shows (in the tachometer-style pic) that my memory is way up to default level, even tho I've decreased it down to the lowest value.
Is this normal?  I'm wondering what I should do to correct it if it isn't.  I think I'm on the newest drivers (12.1?)

[1onevvolf]

My Catalyst GUI shows (in the tachometer-style pic) that my memory is way up to default level, even tho I've decreased it down to the lowest value.

The Catalyst GUI will only respect underclocks to 975MHz AFAIK anything lower will get you default memory clocks.

[tonto]

My Catalyst GUI shows (in the tachometer-style pic) that my memory is way up to default level, even tho I've decreased it down to the lowest value.

The Catalyst GUI will only respect underclocks to 975MHz AFAIK anything lower will get you default memory clocks.

ugh, why do they even give you the option then?  That's so <insert insulting remark of your choice here>.

[Fiyasko]

My Catalyst GUI shows (in the tachometer-style pic) that my memory is way up to default level, even tho I've decreased it down to the lowest value.

The Catalyst GUI will only respect underclocks to 975MHz AFAIK anything lower will get you default memory clocks.

ugh, why do they even give you the option then?  That's so <rediculously usless for them to do!>.

Inserted

[EPiSKiNG]

Sapphire 7970 - Using phoenix 1.7.3
I'm getting:
550MH/s on 925MHz GPU / 340 MHz memory
712MH/s on 1200MHz GPU / 340MHz memory

Bumping mem to default 1375MHz adds like 5MH/s so I don't really see the point.
I haven't found the lowest stable point for GPU voltage yet, but it seems to be approx 1000mV for 925MHz/340MHz.

Now waiting for optimized kernels

712  MH/s is better than the 5970 in mh/w I believe, and nearly, if not beats the 5970 at stock.

-EP

[yochdog]

I've got about $6,000 at my disposal and I'm trying to decide if I want to buy 8 more 7970's or buy the bitcoins outright.

That is a no brainer.  Buy 20 used 5970 and get 40 GPUs.

Lolz.  As if you can even sniff a 5970 for $300. 

[EPiSKiNG]

I've got about $6,000 at my disposal and I'm trying to decide if I want to buy 8 more 7970's or buy the bitcoins outright.

That is a no brainer.  Buy 20 used 5970 and get 40 GPUs.

BUY THE BTC!!!  Unless you're getting free power, the ROI for $6,000 worth of graphics cards will take so much longer to re-coup vs. any value that BTC rises = profit.

-EP

[DeathAndTaxes]

I've got about $6,000 at my disposal and I'm trying to decide if I want to buy 8 more 7970's or buy the bitcoins outright.

That is a no brainer.  Buy 20 used 5970 and get 40 GPUs.

Lolz.  As if you can even sniff a 5970 for $300.  

Everyday on ebay.  Strangely prices have gone up in the last month.  Looks like it is more like $340-$360.  You would think w/ 5970 supply > demand and prices would be falling.

[DeathAndTaxes]

712  MH/s is better than the 5970 in mh/w I believe, and nearly, if not beats the 5970 at stock.

Sure at 60% to 80% higher cost.  5970 can be underclocked also. 

[yochdog]

I've got about $6,000 at my disposal and I'm trying to decide if I want to buy 8 more 7970's or buy the bitcoins outright.

That is a no brainer.  Buy 20 used 5970 and get 40 GPUs.

Lolz.  As if you can even sniff a 5970 for $300.  

Everyday on ebay.  Strangely prices have gone up in the last month.  Looks like it is more like $340-$360.  You would think w/ 5970 supply > demand and prices would be falling.

Every 5970 I have seen in the last 2 weeks is 350+ on Ebay.  I know, I have been bidding. 

[bronan]

driver 12.x needs a hack in the register to make the memory and proper downclocks possible
google for it you only have to edit one line in register to make it work

[Fiyasko]

I've got about $6,000 at my disposal and I'm trying to decide if I want to buy 8 more 7970's or buy the bitcoins outright.

That is a no brainer.  Buy 20 used 5970 and get 40 GPUs.

Lolz.  As if you can even sniff a 5970 for $300.  

Everyday on ebay.  Strangely prices have gone up in the last month.  Looks like it is more like $340-$360.  You would think w/ 5970 supply > demand and prices would be falling.

Nah,
$500
http://www.ebay.ca/itm/ATI-5970-2Gb-512Bit-DDR5-DirectX-11-New-warranty-1-year-/270885811822?pt=PCC_Video_TV_Cards&hash=item3f120d766e
New.

[Parja]

driver 12.x needs a hack in the register to make the memory and proper downclocks possible
google for it you only have to edit one line in register to make it work

Any hints on where to find this info?  I must be using the wrong Google terms because I can't find it.

[Fiyasko]

driver 12.x needs a hack in the register to make the memory and proper downclocks possible
google for it you only have to edit one line in register to make it work

Any hints on where to find this info?  I must be using the wrong Google terms because I can't find it.

You cannot find it because what he says is not true, I've been running with 12.1 eversince it came out, Nothing changed as far as OverClocking is concerned.
Just use MSIa, It has a backwards compatable "bug" in thier "unofficial overclocking" that allows you to Attempt to set Any clock to Anything

win7x64 Cat 12.1 SDK 2.6
crossfire6870 990core 490mem <---Sweet spot for mining
Hell, for awhile i had the cards running at 1020 core and 300mem because i was told 300mem was the best, It's the Most Common best, It's quite specific for the cards.

CGminer also changes clocks Flawlessly
I also hear (NEVER TOUCHED) that Shappire Trix is a good tool.

[Parja]

You cannot find it because what he says is not true, I've been running with 12.1 eversince it came out, Nothing changed as far as OverClocking is concerned.
Just use MSIa, It has a backwards compatable "bug" in thier "unofficial overclocking" that allows you to Attempt to set Any clock to Anything

win7x64 Cat 12.1 SDK 2.6
crossfire6870 990core 490mem <---Sweet spot for mining
Hell, for awhile i had the cards running at 1020 core and 300mem because i was told 300mem was the best, It's the Most Common best, It's quite specific for the cards.

CGminer also changes clocks Flawlessly
I also hear (NEVER TOUCHED) that Shappire Trix is a good tool.

Doesn't seem to work for the 7970, though.  The slider won't go below 685 memory clock.

[Fiyasko]

Hmmm.
I shall just assume i do not know what i am talking about since i do not own a 7970

[fb39ca4]

well, right now they are all reference except for one XFX card.

[enygma]

Just wanted to chime in on this. I just picked up a pair of Sapphire Radeon 7970 GPUs. I've overclocked them to 1125MHz. I'm using Diablo Miner for this run. My hash rate ranges between 1335 and 1340 MHash/s. Note that this is with dual GPU.

EDIT: I'll try and get power figures soon. I have a Kill-a-watt, I just gotta find it.

EDIT 2:

System Specifications:

Intel Core I7 960 @ 3.2 GHz
24 GB DDR3-1600
2 x Sapphire Radeon 7970
Corsair 750W PSU
WD 2TB Black HDD

Power Consumption in Watts w/ (MHash/s):

Idle: ~130W (0 MHash/s)
2 x 925 MHz: ~670W to ~680W (1104 MHash/s) - Power use increases as temps increase
2 x 1125 MHz: ~750W to ~790W (1345 MHash/s) - Power use increases as temps increase
Idle (with OC): ~130W (0 MHash/s)

I'm guessing that a slightly higher rated power supply with better efficiency might be called for on this one.