Comparison of current GPUs PPD/watt and PPD/price

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Comparison of current GPUs PPD/watt and PPD/price

Postby foldy » Mon Oct 31, 2016 12:52 pm

Comparison of current GPUs PPD/watt and PPD/price
https://docs.google.com/spreadsheets/d/ ... gVlxRPnz0/
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Re: Comparison of current GPUs PPD/watt and PPD/price

Postby bruce » Mon Oct 31, 2016 4:20 pm

Suggestion: Something like this would be useful:

New (editable) constant: My Power Cost in $/KWH
Calculate a new column: Months to amortize initial cost
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Re: Nvidia Pascal GPU cards???

Postby foldy » Mon Oct 31, 2016 5:06 pm

The formula would be e.g. for a gtx 1070 compared to a gtx 980Ti which have nearly same PPD
gtx 1070 Power usage = 150 watt
gtx 980Ti Power usage = 250 watt

Power usage saved with gtx 1070 compared to gtx 980Ti = 100 watt = 0.1 kw
Power usage saved in a year = 0.1 kw * 24h *356 days = 855 kwh/yr
Power cost = $0.12/kwh
Power cost for 855 kwh = $0.12/kwh * 855 kwh/yr = $103 per year

gtx 1070 Initial cost = $400
gtx 980Ti sell for $300 on ebay.
Remaining cost $400 - $300 = $100

Remaining cost / Power cost savings per year = $100 / $103 per year = 1 year

So it takes 1 year to amortize the initial cost of a gtx 1070 when selling an existing gtx 980Ti.
After the first year you save $103 every year.
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Re: Nvidia Pascal GPU cards???

Postby rwh202 » Mon Oct 31, 2016 5:23 pm

foldy wrote:The formula would be e.g. for a gtx 1070 compared to a gtx 980Ti which have nearly same PPD
gtx 1070 Power usage = 150 watt
gtx 980Ti Power usage = 250 watt

Power usage saved with gtx 1070 compared to gtx 980Ti = 100 watt = 0.1 kwh
Power usage saved in a year = 0.1 kwh * 24h *356 days = 855 kwh
Power cost = $0.12/kwh
Power cost for 855 kwh = $0.12/kwh * 855 kwh = $103 per year

gtx 1070 Initial cost = $400
gtx 980Ti sell for $300 on ebay.
Remaining cost $400 - $300 = $100

Remaining cost / Power cost savings per year = $100 / $103 per year = 1 year

So it takes 1 year to amortize the initial cost of a gtx 1070 when selling an existing gtx 980Ti.
After the first year you save $103 every year.


Nicely done! Also worth noting that where this power cost is representative (which it seems to be in many places), then it nicely rounds to 1 Watt (year) = $1 per year which is a useful shorthand for quickly evaluating the savings from more efficient hardware etc.

I've done many spreadsheets of my own with similar calculations - useful to show the GF that spending £5000 on GTX1080s actually saves money...
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Re: Nvidia Pascal GPU cards???

Postby MARSTG » Tue Nov 01, 2016 1:00 pm

Yes, but that is because you cannot predict the value of QRB. Can you please add the rx series of the list?
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Re: Comparison of current GPUs PPD/watt and PPD/price

Postby k1wi » Wed Nov 02, 2016 1:13 pm

What would be amazing is a calculator that takes into account the price of the card, performance/watt, the price of electricity and the expected lifetime of the card.

It could also show the relative break even period for different cards, and the total expected cost [upfront plus running costs] over x years (and allow you to 'budget' accordingly).

Some of the ppd values seem to be out from the source db? I'm not sure how accurate TDP is? I've seen numbers about that make the 1070 king for ppd/watt... But minor quibbles as I've seen your disclaimer at the bottom :)
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Re: Comparison of current GPUs PPD/watt and PPD/price

Postby Nert » Wed Nov 02, 2016 1:51 pm

Very good information. This will come in very handy when I upgrade the video cards in my systems.

Thanks !
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Re: Comparison of current GPUs PPD/watt and PPD/price

Postby rhavern » Thu Nov 03, 2016 2:13 pm

I too do a similar thing but instead of using PPD, which varies greatly between WU, I use the numbers from FAHbench as they are not dependent on per project benchmarking. Typically the Explicit/1 numbers are the most relevant, so I build a table of Exp1/<unit of currency> and Exp1/watt, then add some conditional formating color scales to guide the eye. I also look for actual test results to get measured watts used instead of claimed, although I track both numbers out of interest.

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Folding since 1 WU=1 point
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Re: Comparison of current GPUs PPD/watt and PPD/price

Postby Aurum » Tue Jan 24, 2017 7:24 pm

rhavern wrote:I too do a similar thing but instead of using PPD, which varies greatly between WU, I use the numbers from FAHbench as they are not dependent on per project benchmarking. Typically the Explicit/1 numbers are the most relevant, so I build a table of Exp1/<unit of currency> and Exp1/watt, then add some conditional formating color scales to guide the eye. I also look for actual test results to get measured watts used instead of claimed, although I track both numbers out of interest.

Image

Sorry I missed this post before. I cannot see the image. Is there an updated edition?
The Folding Farm Image is a member of the Image team.
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Re: Comparison of current GPUs PPD/watt and PPD/price

Postby dreiter » Mon Mar 06, 2017 1:05 am

Hi foldy,

Just for an update, the 1080 is down to $499 MSRP now. This should bump it's PPD/price up to 1.7, which is tied for the highest PPD/price. It's definitely looking like a much better 'value' proposition for folding now.
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Re: Comparison of current GPUs PPD/watt and PPD/price

Postby Aurum » Mon Mar 06, 2017 1:42 pm

dreiter wrote:Hi foldy,

Just for an update, the 1080 is down to $499 MSRP now. This should bump it's PPD/price up to 1.7, which is tied for the highest PPD/price. It's definitely looking like a much better 'value' proposition for folding now.

That's assuming a 1080 averages 860,000 PPD.
I just bought a couple of EVGA 1070s for $335 each and they at 2.1 PPD/price. Still the sweet spot.
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Re: Comparison of current GPUs PPD/watt and PPD/price

Postby dreiter » Mon Mar 06, 2017 4:31 pm

Aurum wrote:
dreiter wrote:Hi foldy,

Just for an update, the 1080 is down to $499 MSRP now. This should bump it's PPD/price up to 1.7, which is tied for the highest PPD/price. It's definitely looking like a much better 'value' proposition for folding now.

That's assuming a 1080 averages 860,000 PPD.
I just bought a couple of EVGA 1070s for $335 each and they at 2.1 PPD/price. Still the sweet spot.

Lucky you! $335 is significantly below MSRP for those cards right now. I have been checking around but haven't found anything used under $380 yet.
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