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Old 2020-12-21, 13:53   #78
moebius
 
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Sold Out!
ZOTAC GeForce RTX 3080 AMP Holo
EVGA GeForce RTX 3080 FTW3 ULTRA GAMING,

New offer 3 minutes ago
Caseking.de
ZOTAC GAMING GeForce RTX 3080 AMP Holo,
Delivery: Europe

Last fiddled with by moebius on 2020-12-21 at 14:45
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Old 2020-12-21, 14:56   #79
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Sold Out!
ASUS Radeon RX 6800 ROG STRIX GAMING OC 16GB

New Offer
computeruniverse.net
3 EVGA GeForce RTX3080 Ultra FTW3 10 GB OC
Delivery: Worldwide

Cyberport.de
ZOTAC GeForce RTX 3080 AM Holo
Delivery: EU, Third country = shipping costs + 20 Euro

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Old 2020-12-21, 15:44   #80
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Sold Out!
ZOTAC GAMING GeForce RTX 3080 AMP Holo
ZOTAC GeForce RTX 3080 AM Holo
3 EVGA GeForce RTX3080 Ultra FTW3 10 GB OC

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Old 2020-12-21, 16:46   #81
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New Offer

Alternate.de
GIGABYTE Radeon RX 6900 XT 16G
Delivery: only Germany
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Old 2020-12-21, 18:36   #82
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There is no evidence any forumites care about these offers and sold-outs. Unless someone corrects me to show interest, please ease up (or cease) with the daily shopping summary.
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Old 2020-12-21, 19:05   #83
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Quote:
Originally Posted by VBCurtis View Post
There is no evidence any forumites care about these offers and sold-outs. Unless someone corrects me to show interest, please ease up (or cease) with the daily shopping summary.
There are quite a few people here who read this thread regularly, and the offers that I post are not astronomical for dealer prices. If I could afford it I would probably buy a AMD 6800 XT. I know that people who tend to do TF with mfaktc would rather use an RTX 3080
From now on I will not post any more offers, these are only for information, and I think the people here were intelligent enough to assess the offers. The prices are currently too high for me, but they are acceptable for others. Best regards.

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Old 2020-12-28, 00:31   #84
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Here is a graph of various recent AMD cards.

The orange is theoretical FP64 performance in TFLOPS.
The yellow is the number of milliseconds per iteration for the M77936867 PRP benchmark.

You can see that the R7 is not like the others.

You may be able to extrapolate 6800/6800 XT/6900 XT performance using the slope from the Navi cards.

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Old 2020-12-28, 01:16   #85
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Quote:
Originally Posted by Xyzzy View Post
You may be able to extrapolate 6800/6800 XT/6900 XT performance using the slope from the Navi cards.
Aren't there too few points to really assess the function? So, you can only calculate a best-fit line with linear regression. I'm not a mathematician I just fought through analysis and linear algebra with Mathematica at university.
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Old 2020-12-28, 02:26   #86
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Quote:
Originally Posted by Xyzzy View Post
You may be able to extrapolate 6800/6800 XT/6900 XT performance using the slope from the Navi cards.
The 128MB "Infinity Cache" is going to affect the constant of proportionality... a lot...

I am hoping that the 6800XT will become a viable replacement for R7 for PRP workloads. *fingers crossed*
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Old 2020-12-28, 03:16   #87
Viliam Furik
 
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Quote:
Originally Posted by axn View Post
The 128MB "Infinity Cache" is going to affect the constant of proportionality... a lot...

I am hoping that the 6800XT will become a viable replacement for R7 for PRP workloads. *fingers crossed*
Assuming the Infinity Cache allows the cards to unlock their full FP64 potential, the RX 6800 (~1 TFLOPS) should already be at least on par with Radeon VII (~1 TFLOPS, due to memory bottleneck).
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Old 2020-12-28, 04:45   #88
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Quote:
Originally Posted by Viliam Furik View Post
Assuming the Infinity Cache allows the cards to unlock their full FP64 potential, the RX 6800 (~1 TFLOPS) should already be at least on par with Radeon VII (~1 TFLOPS, due to memory bottleneck).
That would be very nice indeed, but I'm keeping my expectations low. If we can hit a decent fraction of R7 thruput, that would be great -- say 70%/80%/90% respectively by 6800/6800XT/6900XT. Anything above that would be bonus.
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