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Message boards : Graphics cards (GPUs) : 2 GTX 1080's vs 3 GTX 1070's vs 4 GTX 1060's

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Viktor Svantner
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Message 43956 - Posted: 14 Jul 2016 | 7:14:17 UTC

Hi.

Has anyone tried to compare the gpu computing performance of GTX 1080 to GTX 1070?
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Message 43957 - Posted: 14 Jul 2016 | 12:00:19 UTC

Last I've heard was that this project doesn't support Pascal cards yet. Best you can do is compare compute performance in other projects and hope relative performance transfers to GPUGrid.

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Message 43959 - Posted: 14 Jul 2016 | 12:35:47 UTC - in response to Message 43957.

Yes, I know that GPUGRID has not yet finished the Pascal´s gpu support, but I thought if anyone has got any experience from other projects (Einstein, POEM or Collatz).
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Message 43961 - Posted: 14 Jul 2016 | 18:44:52 UTC - in response to Message 43959.
Last modified: 24 Jul 2016 | 21:05:50 UTC

In theory, there isn't much in it.

However, I don't have Pascal's to work from because at present they are far too expensive IMO and this project doesn't support them, yet. In time the prices will fall and the devs will revamp the app and that will be the best time to buy Pascals.

Theoretically, the boosted SP GFlops ratings are 6463 for a 1070 and 8873 GFlops for a 1080. That's 6463*3=19389 for the 3 1070's & 8873*2=17746 for the 2 1080's.

In the UK prices are high due to the lack of availability and so on but right now 3 1070's would cost £400*3=1200 and two 1080's would cost £620*2=1240.
The Founders Editions are more expensive, so you don't want to be comparing apples with oranges.
In the US, the MSRP is $379 and $599. There 3 GTX1070's would cost $1137 and 2 GTX1080's would cost $1198.
Alternatively, the Founders Editions are $449 and $699 :- 3 GTX1070's would cost $1347 and 2 GTX1080's would cost $1398.

The TDP's are 150W for the 1070 and 180W for the 1080 so power consumption would be 150W*3=450W and 180W*2=360W. The importance of that factor changes from location to location depending on electric prices.

To summerise,
Three 1070's would theoretically do slightly more work & cost slightly less but would use a bit more power and generate a bit more heat.

I'll throw in the as yet unreleased GTX1060 just to muddy the picture further :)
@4372 SP GFlops (Boosted), 4 would give you 4372*4=17488GFlops which is only marginally lower than two GTX1080's in theory!
The Founders Editions are supposed to cost $299, so 4 would cost $1196 - about $150 and $200 less than 3 GTX1070's and 2 GTX1080's respectively.
The MSRP edition is $249 so 4 would cost $996 - $141 less than 3 MSRP 1070's and more notably £202 less than 2 1080's.
However, 4 GTX1060's would have a combined TDP of 480W which is 120W more than two GTX1080's.

None the less, it's interesting that the GTX1060's will be GP106, their base clock is slightly higher than the GTX1070's and the Bus width, while lower than the 1070 and 1080's, will be relatively higher against the SP boost; ~10% higher than the 1070. IF (and we've no idea yet) bandwidth will be an issue for here (or anywhere else) the 1060's might be a better choice than the 1070's. Further, the GTX1070's bandwidth to GFlops ratio is more favourable than the GTX1080's (despite the 1080's using the more expensive GDDR5X) ~9.8% better [in theory].
Then there is the issue of scalability. The bigger the GPU's get, the less their performance scales for here (at least up until now).
As we don't know what else may follow (a 110W 3GB version of the GTX1060 or a 1050Ti) we don't know what will be the best buys for here or anywhere else.
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Message 43962 - Posted: 14 Jul 2016 | 19:03:55 UTC - in response to Message 43961.

Great info skgiven

Thanks

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Message 43963 - Posted: 14 Jul 2016 | 20:54:53 UTC - in response to Message 43961.

Got to hand it to you SK you certainly spend a lot of time and include a lot of thought and detail in your answers to peoples questions.

If only we could get scientists and admins to do half as much.

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Message 43969 - Posted: 15 Jul 2016 | 4:23:49 UTC - in response to Message 43961.

Thanks a lot for your opinion.

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Message 43972 - Posted: 15 Jul 2016 | 11:41:25 UTC - in response to Message 43961.

In theory, there isn't much in it.

However, I don't have Pascal's to work from because at present they are far too expensive IMO and this project doesn't support them, yet. In time the prices will fall and the devs will revamp the app and that will be the best time to buy Pascals.

Theoretically, the boosted SP GFlops ratings are 6463 for a 1070 and 8873 GFlops for a 1080. That's 6463*3=19389 for the 3 1070's & 8873*2=17746 for the 2 1080's.

In the UK prices are high due to the lack of availability and so on but right now 3 1070's would cost £400*3=1200 and two 1080's would cost £620*2=1240.
The Founders Editions are more expensive, so you don't want to be comparing apples with oranges.
In the US, the MSRP is $379 and $599. There 3 GTX1070's would cost $1137 and 2 GTX1080's would cost $1198.
Alternatively, the Founders Editions are $449 and $699 :- 3 GTX1070's would cost $1347 and 2 GTX1080's would cost $1398.

The TDP's are 150W for the 1070 and 180W for the 1080 so power consumption would be 150W*3=450W and 180W*2=360W. The importance of that factor changes from location to location depending on electric prices.

To summerise,
Three 1070's would theoretically do slightly more work & cost slightly less but would use a bit more power and generate a bit more heat.

I'll throw in the as yet unreleased GTX1060 just to muddy the picture further :)
@4372 SP GFlops (Boosted), 4 would give you 4372*4=17488GFlops which is only marginally lower than the GTX1080's in theory!
The Founders Editions are supposed to cost $299, so 4 would cost $1196 - about $150 and $200 less than 3 GTX1070's and 2 GTX1080's respectively.
The MSRP edition is $249 so 4 would cost $996 - $141 less than 3 MSRP 1070's and more notably £202 less than 2 1080's.
However, 4 GTX1060's would have a combined TDP of 480W which is 120W more than two GTX1080's.

None the less, it's interesting that the GTX1060's will be GP106, their base clock is slightly higher than the GTX1070's and the Bus width, while lower than the 1070 and 1080's, will be relatively higher against the SP boost; ~10% higher than the 1070. IF (and we've no idea yet) bandwidth will be an issue for here (or anywhere else) the 1060's might be a better choice than the 1070's. Further, the GTX1070's bandwidth to GFlops ratio is more favourable than the GTX1080's (despite the 1080's using the more expensive GDDR5X) ~9.8% better [in theory].
Then there is the issue of scalability. The bigger the GPU's get, the less their performance scales for here (at least up until now).
As we don't know what else may follow (a 110W 3GB version of the GTX1060 or a 1050Ti) we don't know what will be the best buys for here or anywhere else.


Just like how you mentioned not comparing Founders Edition to other cards. the same applies to MSRP. Nothing is selling close to MSRP. Still very limited quantity in the states driving prices up. A 1070 is still $429-449.

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Message 43985 - Posted: 16 Jul 2016 | 18:56:45 UTC - in response to Message 43972.

Well, forget about the Founders Editions. And I think SK made it pretty clear he was talking about MSRP prices. If he had used current street prices the numbers might be obsolete soon. Or maybe prices will stay well above MSRP.. I think nobody knows for now, but anyone can check the current prices at his location and at the time he's interested in the question.

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Message 44255 - Posted: 22 Aug 2016 | 7:13:19 UTC
Last modified: 22 Aug 2016 | 7:13:51 UTC

collatz times
asus rog strix 1080 o8g - 1:36 average run
asus rog strix 1060 o6g - 2:45 average run.
for what its worth

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Message 44258 - Posted: 22 Aug 2016 | 20:37:41 UTC - in response to Message 44255.

What are the average clock speeds and GPU utilizations of those cards? I would have expected better scaling under Collatz, but perhaps you'd need to tweak the settings for better GPU utilization.

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Message 44261 - Posted: 23 Aug 2016 | 8:44:26 UTC - in response to Message 44258.
Last modified: 23 Aug 2016 | 8:45:39 UTC

2025 for the 1060
1918 for the 1080
both hover around ~83% utilization.

i had to dial the 1080 a little for crunching to control the heat. one day i'll get around to switching to liquid.

going over the valid WUs reported: i was incorrect on the 1060 times its actuall ~3:05. teach me to eyeball stuffs.

theres some 960 results in the mix below as well:

http://boinc.thesonntags.com/collatz/results.php?userid=1571551&offset=40&show_names=0&state=4&appid=

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Message 44289 - Posted: 24 Aug 2016 | 17:33:17 UTC - in response to Message 44261.

going over the valid WUs reported: i was incorrect on the 1060 times its actuall ~3:05. teach me to eyeball stuffs.

Alright, that's the expected near perfect scaling.

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Message boards : Graphics cards (GPUs) : 2 GTX 1080's vs 3 GTX 1070's vs 4 GTX 1060's