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-   -   RDNA2 / Big Navi (https://www.mersenneforum.org/showthread.php?t=26134)

M344587487 2020-11-18 10:37

Release day is today, anyone brave enough to try and get one on day one? As much as I'd like to I just can't justify trying to get one on day 1, judging by how slow Navi 1 support on Linux progressed big navi could be a Linux paperweight for a while. Indications are that they'll sell out quickly and that demand will outstrip supply for months, if you're after one sooner rather than later then chancing today is your best bet.


edit: You may only have a few minutes to try and get an order in, if that.

M344587487 2020-11-18 13:37

Last warning for anyone trying to get one today. It goes live everywhere in 23 minutes, on the hour.

moebius 2020-11-18 13:47

[QUOTE=M344587487;563646]Last warning for anyone trying to get one today. It goes live everywhere in 23 minutes, on the hour.[/QUOTE]
Here is a quick list of German dealers where you can get the Big Navi probably at 3:00 p.m. Central European Time, at least for European users.
[url]https://www.pcgameshardware.de/Radeon-RX-6800-Grafikkarte-276952/News/AMD-Radeon-RX-6800-RX-6800-XT-kaufen-shops-1361986/[/url][URL="https://www.pcgameshardware.de/Radeon-RX-6800-Grafikkarte-276952/News/AMD-Radeon-RX-6800-RX-6800-XT-kaufen-shops-1361986/"]https://www.pcgameshardware.de/Radeon-RX-6800-Grafikkarte-276952/News/AMD-Radeon-RX-6800-RX-6800-XT-kaufen-shops-1361986/[/URL]

moebius 2020-11-18 14:10

Too funny, most of the retailer sites suddenly crashed on time for the appointment, or could not even be accessed.:smile::smile::smile::smile::smile:


I found an offer for AMD Radeon VII(used) at a dealer in Frankfurt, Germany for only 490 euros, 8 pieces available. All statements without guarantee
[URL="https://www.amazon.de/XFX-Radeon-16GB-Boost-1xHDMI/dp/B07NFGDZWQ/ref=sr_1_1?__mk_de_DE=%C3%85M%C3%85%C5%BD%C3%95%C3%91&dchild=1&keywords=radeon+vii&m=A1P0V3DD9VP5YQ&qid=1605709342&s=merchant-items&sr=1-1"]https://www.amazon.de/XFX-Radeon-16GB-Boost-1xHDMI/dp/B07NFGDZWQ/ref=sr_1_1?__mk_de_DE=%C3%85M%C3%85%C5%BD%C3%95%C3%91&dchild=1&keywords=radeon+vii&m=A1P0V3DD9VP5YQ&qid=1605709342&s=merchant-items&sr=1-1[/URL]

moebius 2020-11-18 15:08

[QUOTE=moebius;563652]I found an offer for AMD Radeon VII(used) at a dealer in Frankfurt, Germany for only 490 euros, 8 pieces available.[/QUOTE]
It seems like someone bought all 8, in any case they are no longer available. Damn fast the customers.

Xyzzy 2020-11-18 16:38

Since ROCm doesn't yet support the 5000 series GPUs, why would we throw money at a 6000 series GPU?

:confused:

M344587487 2020-11-18 17:04

[QUOTE=Xyzzy;563674]Since ROCm doesn't yet support the 5000 series GPUs, why would we throw money at a 6000 series GPU?

:confused:[/QUOTE]
My logic exactly, however initial outlook looks good for the 6000 series and the 5000 should be brought up to speed with it: [url]https://www.phoronix.com/vr.php?view=29708[/url]

firejuggler 2020-11-18 17:12

[QUOTE=Xyzzy;563674]Since ROCm doesn't yet support the 5000 series GPUs, why would we throw money at a 6000 series GPU?

:confused:[/QUOTE]
To make Nvidia release a Ti version wich will be better than the 6000 series

Mark Rose 2020-11-18 17:16

128 MB of L3 cache. I bet gpuOwl will benefit from that.

Mark Rose 2020-11-19 01:08

Looks like Radeon VII is still going to be the card to get. Also, the attachment feature of the forum doesn't like svg files, so here is a link:

[url]https://openbenchmarking.org/embed.php?i=2011176-FI-GPUCOMPUT49&sha=723bc7b2db04&p=2[/url]

From here: [url]https://www.phoronix.com/scan.php?page=article&item=amd-rx6800-opencl&num=1[/url]

Viliam Furik 2020-11-19 03:52

[QUOTE=Mark Rose;563719]Looks like Radeon VII is still going to be the card to get.[/QUOTE]

The data from the chart don't tell the whole truth when it comes to gpuOwl. Because of its dependence on memory bandwidth, Radeon VII doesn't reach anywhere near the potential 3,4 TFLOPS. In reality, even with the best cooling and memory and core clocks, it reaches at most 1,5 TFLOPS. My Radeon VII gives about 750 GFLOPS because it's heavily underclocked (1000 mV core voltage, -5% power limit, 1600 MHz core clock, 1000 MHz memory clock - MSI Afterburner settings).

If the gpuOwl could use the Infinity cache effectively, with its ~1,5 TB/s of memory bandwidth, even the RX 6800 could outperform the Radeon VII, but the RX 6900XT would most probably crush it. But that's only if the Infinity cache can be used.


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