Does it make sense to be mining with 7970, would you loose money or make money ?
When asics kick in, you will be able to sell 7970 as modern gaming cards. Can you say the same for 3+ year old card? 
Topic: 7970 vs 5970 power consumption (Read 15778 times)
ok well i guess i'll just see how long it lasts...Had a OCZ psu for my old 775 system and it lasted 6+years and maybe it would have lasted longer if i didn't move it...after i took it out of the case it never worked again and some caps were blown...could have replaced them but didn't feel the need to..plus it would have been a pain cause it was 5 and 1 was in a tight spot...well thanks for the info 
Just because a power supply gets warm or hot doesn't mean it's a terrible power supply that's going to die in a couple days. It could just be better at pulling away heat from hotspots. Your Seasonics are great. You should not feel like you got ripped off with a trash power supply. They are top of the line. Parts of it are designed to have tolerances to temperatures over 100C.
Just because a power supply gets warm or hot doesn't mean it's a terrible power supply that's going to die in a couple days. It could just be better at pulling away heat from hotspots. Your Seasonics are great. You should not feel like you got ripped off with a trash power supply. They are top of the line. Parts of it are designed to have tolerances to temperatures over 100C.
well then i'm sad...I have a seasonic 1000w plat. psu...it was getting warm with just a 5850 n 7770...and that's off the pcie rails...now i added a 6990 to it and it's getting even hotter...i woulda at least thought it could handle the 2 first cards without a sweat...hmm maybe i got a bum one...it is new...oh well if it goes out i can rma it...7 year warrenty yay...oh and that's with the fan switch to normal and the 6990 underclocked...and all the mem on cards underclocked as well...unless it's picking up the heat from the 6990...open case..no fan to move the air either...but it still was getting warm with the 2 cards lying on my desktop away from the cards so i dunno...hell my seasonic 860w plat. psu is powering a 7970 oc'd n 5970 oc'd and it's not even warm...course it does a box fan blowing into it...
This was brave
putting those 2 on a 450w supply
It's not brave, it's smart. He used a Gold PSU, so he probably had close to 450W available on the 12V rails (probably single rail). If it was a simple Celeron or Sempron 400W could go to the 2 GPUs and if he downclocked the RAM he probably had enough room to throw a 7770 in there too
A cheap 450 PSU will have 240W available on the 12v (maybe 20A), a high end Gold PSU is made for this stuff - no need for overkill. Quality over quantity.
You are correct. I stopped using cheapo power supplies. 80plus gold or better for me from now on. Entire capacity can be drawn on 12v. Rosewill Capstone 450W. Didn't even get warm. On the other end, I have an Antec TruPower II 550 watt. It's something like 70% efficient, no active PFC, and available 12v power is poor. It shut off when I was furmark testing a Radeon 6970. No other video cards were attached.
I got actual power figures for 5970. I ran a computer equipped with a 450 watt 80PLUS Gold power supply with a single 5870 in it and mined to get a baseline figure. It came to 175 watts with a kill-a-watt. I added a 5970 on top of that and ran both cores at 1v, 760MHz and 152MHz memory and mined on the 5870 plus 5970. Power increased to 425 watts with a kill-a-watt and the 5970 generated 705 MHash/sec.
Radeon 5970 @ 760/152/1v = 705Mhash/sec @ 250 watts = 2.82MHash/joule.
Radeon 5970 @ 760/152/1v = 705Mhash/sec @ 250 watts = 2.82MHash/joule.
This was brave
putting those 2 on a 450w supplyIt's not brave, it's smart. He used a Gold PSU, so he probably had close to 450W available on the 12V rails (probably single rail). If it was a simple Celeron or Sempron 400W could go to the 2 GPUs and if he downclocked the RAM he probably had enough room to throw a 7770 in there too
A cheap 450 PSU will have 240W available on the 12v (maybe 20A), a high end Gold PSU is made for this stuff - no need for overkill. Quality over quantity.
You are correct. I stopped using cheapo power supplies. 80plus gold or better for me from now on. Entire capacity can be drawn on 12v. Rosewill Capstone 450W. Didn't even get warm. On the other end, I have an Antec TruPower II 550 watt. It's something like 70% efficient, no active PFC, and available 12v power is poor. It shut off when I was furmark testing a Radeon 6970. No other video cards were attached.
I got actual power figures for 5970. I ran a computer equipped with a 450 watt 80PLUS Gold power supply with a single 5870 in it and mined to get a baseline figure. It came to 175 watts with a kill-a-watt. I added a 5970 on top of that and ran both cores at 1v, 760MHz and 152MHz memory and mined on the 5870 plus 5970. Power increased to 425 watts with a kill-a-watt and the 5970 generated 705 MHash/sec.
Radeon 5970 @ 760/152/1v = 705Mhash/sec @ 250 watts = 2.82MHash/joule.
Radeon 5970 @ 760/152/1v = 705Mhash/sec @ 250 watts = 2.82MHash/joule.
This was brave
putting those 2 on a 450w supplyIt's not brave, it's smart. He used a Gold PSU, so he probably had close to 450W available on the 12V rails (probably single rail). If it was a simple Celeron or Sempron 400W could go to the 2 GPUs and if he downclocked the RAM he probably had enough room to throw a 7770 in there too
A cheap 450 PSU will have 240W available on the 12v (maybe 20A), a high end Gold PSU is made for this stuff - no need for overkill. Quality over quantity.
You are correct. I stopped using cheapo power supplies. 80plus gold or better for me from now on. Entire capacity can be drawn on 12v. Rosewill Capstone 450W. Didn't even get warm. On the other end, I have an Antec TruPower II 550 watt. It's something like 70% efficient, no active PFC, and available 12v power is poor. It shut off when I was furmark testing a Radeon 6970. No other video cards were attached.
I got actual power figures for 5970. I ran a computer equipped with a 450 watt 80PLUS Gold power supply with a single 5870 in it and mined to get a baseline figure. It came to 175 watts with a kill-a-watt. I added a 5970 on top of that and ran both cores at 1v, 760MHz and 152MHz memory and mined on the 5870 plus 5970. Power increased to 425 watts with a kill-a-watt and the 5970 generated 705 MHash/sec.
Radeon 5970 @ 760/152/1v = 705Mhash/sec @ 250 watts = 2.82MHash/joule.
Radeon 5970 @ 760/152/1v = 705Mhash/sec @ 250 watts = 2.82MHash/joule.
This was brave
putting those 2 on a 450w supplyIt's not brave, it's smart. He used a Gold PSU, so he probably had close to 450W available on the 12V rails (probably single rail). If it was a simple Celeron or Sempron 400W could go to the 2 GPUs and if he downclocked the RAM he probably had enough room to throw a 7770 in there too
A cheap 450 PSU will have 240W available on the 12v (maybe 20A), a high end Gold PSU is made for this stuff - no need for overkill. Quality over quantity.
I got actual power figures for 5970. I ran a computer equipped with a 450 watt 80PLUS Gold power supply with a single 5870 in it and mined to get a baseline figure. It came to 175 watts with a kill-a-watt. I added a 5970 on top of that and ran both cores at 1v, 760MHz and 152MHz memory and mined on the 5870 plus 5970. Power increased to 425 watts with a kill-a-watt and the 5970 generated 705 MHash/sec.
Radeon 5970 @ 760/152/1v = 705Mhash/sec @ 250 watts = 2.82MHash/joule.
Radeon 5970 @ 760/152/1v = 705Mhash/sec @ 250 watts = 2.82MHash/joule.
This was brave
putting those 2 on a 450w supply
I got actual power figures for 5970. I ran a computer equipped with a 450 watt 80PLUS Gold power supply with a single 5870 in it and mined to get a baseline figure. It came to 175 watts with a kill-a-watt. I added a 5970 on top of that and ran both cores at 1v, 760MHz and 152MHz memory and mined on the 5870 plus 5970. Power increased to 425 watts with a kill-a-watt and the 5970 generated 705 MHash/sec.
Radeon 5970 @ 760/152/1v = 705Mhash/sec @ 250 watts = 2.82MHash/joule.
Radeon 5970 @ 760/152/1v = 705Mhash/sec @ 250 watts = 2.82MHash/joule.
Quote
cgminer @ 1.05V/820/300, 377W, 761Mh/s
well, that's not best really anyway, since you can pull 757Mh/s at 820/140
Does it make sense to be mining with 7970, would you loose money or make money ?
i've heard the 7970 is the most efficient mining card..
I got a bunch of 5970s, 6990s, 7950s and 7970s. Basicly in my experience, 7950 is the most efficient card. And it doesnt pump out as much heat as the rest of the bunch. Too bad there isnt a thread where we could all show results.
Does it make sense to be mining with 7970, would you loose money or make money ?
i've heard the 7970 is the most efficient mining card..Does it make sense to be mining with 7970, would you loose money or make money ?
i've heard the 7970 is the most efficient mining card..
Does it make sense to be mining with 7970, would you loose money or make money ?
I don't believe 97 watts for both cores on a 5970 mining, even at those low volts, is correct. If you want to get a REAL baseline figure, run the computer with a single regular video card (or integrated), and use -that- for your baseline power. -then- plug in the 5970 and get your idle and load power figures, then we can get the true power figures.
also, looks like I replied to a necro.
also, looks like I replied to a necro.
Oh wow, it seems like it's been forever since I posted on this. I no longer have any 5970s, but IIRC the 97 watts was indeed (System Mining - System Idle). That was with a severe undervolt that was kinda/sorta stable. I think it was 24hr stable, but not 48hr stable. Nonetheless it was a real number though, measured at the wall from a Kill-o-watt meter.
I don't believe 97 watts for both cores on a 5970 mining, even at those low volts, is correct. If you want to get a REAL baseline figure, run the computer with a single regular video card (or integrated), and use -that- for your baseline power. -then- plug in the 5970 and get your idle and load power figures, then we can get the true power figures.
also, looks like I replied to a necro.
also, looks like I replied to a necro.
now what do we get with a 7990?
also 7970 is still only a single gpu card. You can fit 8 cards in 1 system compared to only 4 5970's (driver limitation), so it has less up-front costs as far as supporting hardware.
Assuming it is doable to set up and run stable 24/7 for 8x 7970 on a single motherboard...
My 5970s are all running stable at 920mV and 680Mhz.
Of course, YMMV.
Of course, YMMV.
all on the same rig
PhenomII @ 1GHz, PSU is the same SF 80+ gold as used before
5970, linux amd64, cat 11.12, sdk2.5
idle @ 0.95V/157/1000, 182W
idle @ 0.95V/157/300, 152W
idle @ 0.95V/157/150, 149W
cgminer @ 1.05V/820/300, 377W, 761Mh/s
cgminer @ 1.05V/600/150, 308W, 542Mh/s
cgminer @ 1.00V/600/150, 291W, 542Mh/s
cgminer @ 0.95V/600/150, 273W, 542Mh/s
7970, linux amd64, cat 11.12, sdk2.6
idle @ 0.85V/300/150, 115W
idle @ 1.175V/300/150, 132W
idle @ 1.175V/1150/1070, 168W
phoenix @ 1.175V/1150/1070, 363W, 676Mh/s
phoenix @ 1.175V/1150/1375, 370W, 676Mh/s
phoenix @ 0.85V/300/200, 154W, 178Mh/s
7970, windows 7, cat 11.12 7970 edition, sdk 2.6
screen off for a bit,102W
idle @ 0.85V/300/150, 114W
idle @ 1.175V/925/150, 142W
idle @ 1.0V/925/150, 128W
phoenix @ 1.0V/925/150, 235W, 535Mh/s
phoenix @ 0.95V/925/150, 222W, 535Mh/s
phoenix @ 0.92V/925/150, 217W, 535Mh/s
phoenix @ 1.175V/1150/150, 328W, 659Mh/s
phoenix @ 1.175V/1150/300, 339W, 666Mh/s
phoenix @ 1.175V/1150/1070, 368W, 674Mh/s
2MB PCI S3 VGA card, linux
idle 101W
so let's run some numbers, using 0.95V as undervolt for 7970...
whole system:
max OC @ stock V: 5970 2.02Mh/J, 7970 2.01
undervolted: 5970 1.99Mh/J, 7970 2.41
assuming system is 100W (well, more or less...)
max OC @ stock V: 5970 2.75Mh/J, 7970 2.89
undervolted: 5970 3.13Mh/J, 7970 4.39
bullshit calc (aka simple load - idle)
max OC @ stock V: 5970 3.38Mh/J, 7970 3.07
undervolted: 5970 4.37Mh/J, 7970 4.95
PhenomII @ 1GHz, PSU is the same SF 80+ gold as used before
5970, linux amd64, cat 11.12, sdk2.5
idle @ 0.95V/157/1000, 182W
idle @ 0.95V/157/300, 152W
idle @ 0.95V/157/150, 149W
cgminer @ 1.05V/820/300, 377W, 761Mh/s
cgminer @ 1.05V/600/150, 308W, 542Mh/s
cgminer @ 1.00V/600/150, 291W, 542Mh/s
cgminer @ 0.95V/600/150, 273W, 542Mh/s
7970, linux amd64, cat 11.12, sdk2.6
idle @ 0.85V/300/150, 115W
idle @ 1.175V/300/150, 132W
idle @ 1.175V/1150/1070, 168W
phoenix @ 1.175V/1150/1070, 363W, 676Mh/s
phoenix @ 1.175V/1150/1375, 370W, 676Mh/s
phoenix @ 0.85V/300/200, 154W, 178Mh/s
7970, windows 7, cat 11.12 7970 edition, sdk 2.6
screen off for a bit,102W
idle @ 0.85V/300/150, 114W
idle @ 1.175V/925/150, 142W
idle @ 1.0V/925/150, 128W
phoenix @ 1.0V/925/150, 235W, 535Mh/s
phoenix @ 0.95V/925/150, 222W, 535Mh/s
phoenix @ 0.92V/925/150, 217W, 535Mh/s
phoenix @ 1.175V/1150/150, 328W, 659Mh/s
phoenix @ 1.175V/1150/300, 339W, 666Mh/s
phoenix @ 1.175V/1150/1070, 368W, 674Mh/s
2MB PCI S3 VGA card, linux
idle 101W
so let's run some numbers, using 0.95V as undervolt for 7970...
whole system:
max OC @ stock V: 5970 2.02Mh/J, 7970 2.01
undervolted: 5970 1.99Mh/J, 7970 2.41
assuming system is 100W (well, more or less...)
max OC @ stock V: 5970 2.75Mh/J, 7970 2.89
undervolted: 5970 3.13Mh/J, 7970 4.39
bullshit calc (aka simple load - idle)
max OC @ stock V: 5970 3.38Mh/J, 7970 3.07
undervolted: 5970 4.37Mh/J, 7970 4.95
Awesome, finally a back-to-back test on the same system... and it looks like the results are pretty close in most of the settings. The "max OC" part is going to vary from card to card, as is the minimum undervolt, so that will def impact the final numbers as well. Did you try going any lower than 950mv on the 5970?
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