VDDC: 0.9000 V
VDDC Current: 32.0-34.0 A
Topic: 7970 from newegg $405 - page 3. (Read 5462 times)
I have 4 hard drives, 2 SSDs, 7 fairly high speed 120mm fans, 4 CCFL UV tubes, and 2 pumps and an overvolted 3930K and 32GB of RAM to power. That's probably where all the extra power is going.
I digress. The advantage of 1.5 node gap in process should allow the 7970 to make a killing as far as efficiency goes. Could you post your GPU-Z VDDC and VDDC Current when mining on the 5970 @ 550 MH/s? Those 2 variables are the only things that can be comparable given our system's likely widely different configurations.
7970s should very closely approach 5970s for efficiency when downvolted, so I'm assuming there's still some room to streamline for power consumption on your system?
I digress. The advantage of 1.5 node gap in process should allow the 7970 to make a killing as far as efficiency goes. Could you post your GPU-Z VDDC and VDDC Current when mining on the 5970 @ 550 MH/s? Those 2 variables are the only things that can be comparable given our system's likely widely different configurations.
Here's what my numbers look like
315W idle at desktop
Clocks 925/685
1100 MH/s (2 GPUs, I took one of my cards out), 550MH/s per card just like yours.
0.950 VCore
460W load.
460-315 = 145W
Divide by 2 for 2 cards = 72.5W
550 MH/s / 72.5W = 7.5 MH/J.
Edit: I wonder if Roadhog disabled ULPS that would explain the low efficiency numbers. If he didnt, the numbers are not comparable to 5970 since 5970 idles at 42W idle power while the 7970 is 15W for the first card and 3W for each additional card.
Anyways, I think a more fair metric would be "System idle power without graphics card installed". That would lead to better numbers. Then again at that point, you may end up with inaccuracies due to PSU efficiency since for a 1200W PSU, you're approaching the 10% load which is something usually 70-75% efficiency on an 80PLUS Gold unit.
Edit2: Maybe it is best if we compared via GPU-Z? (VDDC Current * VDDC) should give us correct power. Which in my case would be 550MH/s / 75W = 7.3 MH/J
315W idle at desktop
Clocks 925/685
1100 MH/s (2 GPUs, I took one of my cards out), 550MH/s per card just like yours.
0.950 VCore
460W load.
460-315 = 145W
Divide by 2 for 2 cards = 72.5W
550 MH/s / 72.5W = 7.5 MH/J.
Edit: I wonder if Roadhog disabled ULPS that would explain the low efficiency numbers. If he didnt, the numbers are not comparable to 5970 since 5970 idles at 42W idle power while the 7970 is 15W for the first card and 3W for each additional card.
Anyways, I think a more fair metric would be "System idle power without graphics card installed". That would lead to better numbers. Then again at that point, you may end up with inaccuracies due to PSU efficiency since for a 1200W PSU, you're approaching the 10% load which is something usually 70-75% efficiency on an 80PLUS Gold unit.
Edit2: Maybe it is best if we compared via GPU-Z? (VDDC Current * VDDC) should give us correct power. Which in my case would be 550MH/s / 75W = 7.3 MH/J
315W at idle is curiously high. In fact that idle number is getting close to what my gaming rig pulls when mining with dual 5970s (1100 MH/s @
7970s should very closely approach 5970s for efficiency when downvolted, so I'm assuming there's still some room to streamline for power consumption on your system?
I really had no expectations, but the results were really surprising. If you read through the thread, you'd see I posted as well so I'm aware of Roadhog's findings. Where's he's doing 5.04 MH/j per card on water, I'm doing over 5.67 MH/j per card on air with my 5970 setup. 97w load while mining (135W idle at the plug, 232W while mining) 550 MH/s. Same formula Roadhog used, so it eliminates variables like CPU and other accessories that might add to the system total.
Here's what my numbers look like
315W idle at desktop
Clocks 925/685
1100 MH/s (2 GPUs, I took one of my cards out), 550MH/s per card just like yours.
0.950 VCore
460W load.
460-315 = 145W
Divide by 2 for 2 cards = 72.5W
550 MH/s / 72.5W = 7.5 MH/J.
Edit: I wonder if Roadhog disabled ULPS that would explain the low efficiency numbers. If he didnt, the numbers are not comparable to 5970 since 5970 idles at 42W idle power while the 7970 is 15W for the first card and 3W for each additional card.
Anyways, I think a more fair metric would be "System idle power without graphics card installed". That would lead to better numbers. Then again at that point, you may end up with inaccuracies due to PSU efficiency since for a 1200W PSU, you're approaching the 10% load which is something usually 70-75% efficiency on an 80PLUS Gold unit.
Edit2: Maybe it is best if we compared via GPU-Z? (VDDC Current * VDDC) should give us correct power. Which in my case would be 550MH/s / 75W = 7.3 MH/J
You really expect your 40nm GPU to actually even come close to a 28 nm GPU in terms of power efficiency? I mean yes we gained a bunch of scheduler hardware, but we're actually 1.5 nodes away from 40 nm (since TSMC cancelled their 32 nm node).
For efficiency result, look no further than here: https://bitcointalksearch.org/topic/m.683755
That guy is pulling over 4 MH/J (1650 MH/400W) on air, more than 5 MH/j on water.
For efficiency result, look no further than here: https://bitcointalksearch.org/topic/m.683755
That guy is pulling over 4 MH/J (1650 MH/400W) on air, more than 5 MH/j on water.
I really had no expectations, but the results were really surprising. If you read through the thread, you'd see I posted as well so I'm aware of Roadhog's findings. Where's he's doing 5.04 MH/j per card on water, I'm doing over 5.67 MH/j per card on air with my 5970 setup. 97w load while mining (135W idle at the plug, 232W while mining) 550 MH/s. Same formula Roadhog used, so it eliminates variables like CPU and other accessories that might add to the system total.
The highest clocked 5970 on the wiki did 863.4 MH/s and it is likely with watercooling and overvolting. Since there are so many of those cards, I would assume that's a fairly high result amongst 5970s. However when I looked at the 7970s, most didn't bother seriously overvolting their hardware.
lol watercooling, srsly? I can hit 860 MH/s+ with an overvolt/overclock on my 5970s, and I think my cards are average. The problem with running them that hard is they guzzle power like crazy.
During the day I run mine a little undervolted/underclocked to save on power.
3x 5970
Rig idle: 228w
Rig mining: 541w
1.67 GH/s
3.08 MH/j
But that's with a Athlon II x4 960t processor. I could probably trim out a few more watts by going with an AMD Sempron or something.
I'm curious to see how much more efficient your 7970s are.
You really expect your 40nm GPU to actually even come close to a 28 nm GPU in terms of power efficiency? I mean yes we gained a bunch of scheduler hardware, but we're actually 1.5 nodes away from 40 nm (since TSMC cancelled their 32 nm node).
For efficiency result, look no further than here: https://bitcointalksearch.org/topic/m.683755
That guy is pulling over 4 MH/J (1650 MH/400W) on air, more than 5 MH/j on water.
I cannot compare on idle power since I run i7-3930K @ 4.7 GHz with serious volts all day doing continuous compilation on my work.
The highest clocked 5970 on the wiki did 863.4 MH/s and it is likely with watercooling and overvolting. Since there are so many of those cards, I would assume that's a fairly high result amongst 5970s. However when I looked at the 7970s, most didn't bother seriously overvolting their hardware.
lol watercooling, srsly? I can hit 860 MH/s+ with an overvolt/overclock on my 5970s, and I think my cards are average. The problem with running them that hard is they guzzle power like crazy.
During the day I run mine a little undervolted/underclocked to save on power.
3x 5970
Rig idle: 228w
Rig mining: 541w
1.67 GH/s
3.08 MH/j
But that's with a Athlon II x4 960t processor. I could probably trim out a few more watts by going with an AMD Sempron or something.
I'm curious to see how much more efficient your 7970s are.
2.6GH/s@850W from the wall. So we have the same MH/J. That is with a sempron and 4x 7970s.
The highest clocked 5970 on the wiki did 863.4 MH/s and it is likely with watercooling and overvolting. Since there are so many of those cards, I would assume that's a fairly high result amongst 5970s. However when I looked at the 7970s, most didn't bother seriously overvolting their hardware.
lol watercooling, srsly? I can hit 860 MH/s+ with an overvolt/overclock on my 5970s, and I think my cards are average. The problem with running them that hard is they guzzle power like crazy.
During the day I run mine a little undervolted/underclocked to save on power.
3x 5970
Rig idle: 228w
Rig mining: 541w
1.67 GH/s
3.08 MH/j
But that's with a Athlon II x4 960t processor. I could probably trim out a few more watts by going with an AMD Sempron or something.
I'm curious to see how much more efficient your 7970s are.
My 7970 reaches 1170MHz at stock voltage of 1.175V and I don't think it's a particularly bad card, just an average one. That gives it about 700MH/s, perhaps a bit more. Normally I run it undervolted to 1.1V @ 1100MHz to keep it cooler.
I think you have a dud card. All 3 of my 7970s can do significantly better than 1170 on stock. I can get 1220, 1230, and 1250 on all my stock voltage 7970s.
Or you got some nice cards and we got duds.
My 7970 reaches 1170MHz at stock voltage of 1.175V and I don't think it's a particularly bad card, just an average one. That gives it about 700MH/s, perhaps a bit more. Normally I run it undervolted to 1.1V @ 1100MHz to keep it cooler.
I think you have a dud card. All 3 of my 7970s can do significantly better than 1170 on stock. I can get 1220, 1230, and 1250 on all my stock voltage 7970s.
I suppose it's slightly more power-efficient as well, but not by much, 5970s consume <300W while mining as well.
7970s consume < 200W while mining. Using 2/3rds of the power is not "slightly".
So you're saying a 7970 can hit over 850 MH/s?
I'm too lazy to pull out my 2nd card (water-cooled so I'd have to disassemble my loop), but there is one clocked at 1290 doing 825 MH/s on the wiki and I have a card that does 1350 that should scale up to ~860 if you do the math. Keep in mind that my card is not exactly an extreme clocker. There are many people with 1.35GHz+ clocks.
Also I haven't done the Asus BIOS flash which gives me 1.4V (instead of 1.3V with other BIOS), which should be good for another 50-100 MHz
I don't know. My 5970s do 730-790MH/s each, all on stock 1.05V. My 7970 reaches 1170MHz at stock voltage of 1.175V and I don't think it's a particularly bad card, just an average one. That gives it about 700MH/s, perhaps a bit more. Normally I run it undervolted to 1.1V @ 1100MHz to keep it cooler. I'm not sure bringing overvolting into discussion is a good idea, you can do that on 5970 too to get those 850+ MH/s numbers.
I'd say the 5970 is a bit faster mining card, but 7970 has the plus of being new and available, thus having warranty. Probably better resale value in the future too, as it's a better card for most games and featurewise. I suppose it's slightly more power-efficient as well, but not by much, 5970s consume <300W while mining as well.
discount code has run out 
So you're saying a 7970 can hit over 850 MH/s?
I'm too lazy to pull out my 2nd card (water-cooled so I'd have to disassemble my loop), but there is one clocked at 1290 doing 825 MH/s on the wiki and I have a card that does 1350 that should scale up to ~860 if you do the math. Keep in mind that my card is not exactly an extreme clocker. There are many people with 1.35GHz+ clocks.
Also I haven't done the Asus BIOS flash which gives me 1.4V (instead of 1.3V with other BIOS), which should be good for another 50-100 MHz
I think you mean the 5970.
In that case, the power efficiency of the 7970 will allow for an earlier break-even point if you pay a relatively normal price for electricity.
Of course if power is free, the 7970 is a much better overclocker and usually exceed overclocked 5970 speeds and so wins on that front too.
In that case, the power efficiency of the 7970 will allow for an earlier break-even point if you pay a relatively normal price for electricity.
Of course if power is free, the 7970 is a much better overclocker and usually exceed overclocked 5970 speeds and so wins on that front too.
So you're saying a 7970 can hit over 850 MH/s?
Even though newegg business and the normal newegg are not exactly the same (and sometimes even has different prices), you can still make an account on newegg business and shop like normal.
Btw, with the 7970 being nearly the same performance as the 5870, is it even worth it, even at this sale price? Unless people are planning to buy it to flip and profit.
Btw, with the 7970 being nearly the same performance as the 5870, is it even worth it, even at this sale price? Unless people are planning to buy it to flip and profit.
I think you mean the 5970.
In that case, the power efficiency of the 7970 will allow for an earlier break-even point if you pay a relatively normal price for electricity.
Of course if power is free, the 7970 is a much better overclocker and usually exceed overclocked 5970 speeds and so wins on that front too.
Even though newegg business and the normal newegg are not exactly the same (and sometimes even has different prices), you can still make an account on newegg business and shop like normal.
Btw, with the 7970 being nearly the same performance as the 5870, is it even worth it, even at this sale price? Unless people are planning to buy it to flip and profit.
Btw, with the 7970 being nearly the same performance as the 5870, is it even worth it, even at this sale price? Unless people are planning to buy it to flip and profit.
Can I get your setting? I'd love my 5870's to get 650MH/s
Even though newegg business and the normal newegg are not exactly the same (and sometimes even has different prices), you can still make an account on newegg business and shop like normal.
Btw, with the 7970 being nearly the same performance as the 5870, is it even worth it, even at this sale price? Unless people are planning to buy it to flip and profit.
Btw, with the 7970 being nearly the same performance as the 5870, is it even worth it, even at this sale price? Unless people are planning to buy it to flip and profit.
Signs up for newegg business
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Limit 10 per customer.
Well that sucks ...
That is not Newegg.com; it is Newegg Business, not for consumers, but if only it was...
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