Quoting: Pleytos

Quoting: Samsaibut my point still stands: with Nouveau I can only run the memory at a little over a quarter of the maximum speed.

That statement is false. That is not how memory works. If GDDR5 is marketed at 6008MHz or actually Nvidia says 6,0Gb/ps, the base speed is not 6,0Gb/ps. Source [External Link]

It means that the memory chips run at a CK of 1502MHz and WCK of 3004MHz. Making it effectively 6Gb/ps data rate per pin. Which is the way the marketing department decided to name it. But anytime you want to change the speed of the GPU/memory, you need to take in account the CK speed. That's the base speed the memory is running on.

Configuring the CK speed above 1502MHz is overclocking and will eventually result in artifacts. Example [External Link]
The screen you posted in the article are also artifacts, which could have produced by overclocked memory.

Being more precise, the GDDR5 SGRAM uses a total of three clocks: two write clocks associated with two bytes (WCK01 and WCK23) and a single command clock (CK). Taking a GDDR5 with 5 Gb/s data rate per pin as an example, the CK clock runs with 1.25 GHz and both WCK clocks at 2.5 GHz.

Source [External Link]

Okay, let's put it simply then.

Powerstate 0 (or 07): Graphics: 405 MHz, Memory: 648 MHz
Powerstate 1 (or 0a): Graphics: 967 MHz, Memory: 1620 MHz
Powerstate 2 (or 0e/0f): Graphics: 1228 MHz, Memory: 6008 MHz.

Only powestates 0 and 1 are usable on Nouveau. Thus, the memory can't reach its maximum, which NVIDIA X Server Settings says is 6008 MHz. I am not sure how that clockspeed is counted in the end, but surely 6008 MHz > 1620 MHz. If 1502 MHz were the absolute maximum, then why would NVIDIA allow me to go over that and go over it quite frequently when I'm playing a game?

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I did. Twitch saves the footage automatically. I'll export it to YouTube soon.

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Nice that you mentioned Games Republic. It's indeed one way to support us and buy games at the same time. Just make sure you make your purchases on our store page (https://linux.gamesrepublic.com/ [External Link] and we'll get a share of the sales. And you get some games while doing that, so that's pretty cool.

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Quoting: PleytosI hope you know that your 760GTX has GDDR5 memory, so the maximum of 6008 MHz is actually 1502 MHz, because you need to multiply it with 4. So if you tried to run your memory at a frequency of 1620 MHz, that's 6480 MHz, probably to much. I hope you didn't mix up these facts and that this comment is useless but I thought I'll just share this information.

I'm going by what NVIDIA X Server Settings and pstate say and according to them the maximum memory frequency I can achieve on GTX 760 is 6008 MHz. I am no hardware expert and I don't know the exact hardware details, but my point still stands: with Nouveau I can only run the memory at a little over a quarter of the maximum speed.

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Quoting: DisharmonicBoth XCOM and Empire:TW run fine with R600, so that must be a Nouveau bug. Did you test gallium-nine at all? It's definitely worth giving a shot imo.

I spent a couple of hours trying to sort it out for testing but I couldn't figure out the necessary configurations in time. I am not too skilled with Wine or Gallium3D, so in the end I just got frustrated and left Gallium-nine out of the testing entirely.

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Quoting: ZeloxI hope this game will be streamed on friday. Might toon in then :D

Oh no...

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Once my Nouveau experiment is over I'm going to abuse the crap out of the media source feature. You will never see a livestream from me without at least one .gif spinning somewhere on the screen! :D

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Told you so. ;)

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Quoting: Xpanderupgraded to 3.16? you on debian stable or something? 3.19 is current stable and 4.0 just around the corner.
my last experiments with nouveau were quite disastrous ... nothing really worked.. didn't had time to investigate much either..

but try Borderlands 2 or similar Triple A games as well if you testing it.. would be nice to see.

Metro Redux and Dying Light is probably out of question due to no gl4 support.

Not everyone uses Arch, my friend. Ubuntu 14.04 uses 3.13 by default and now I'm using a kernel backported from 14.10.

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I was relatively lucky with dual booting myself. I dual booted back in 2010 but then Vista decided to commit suicide for one reason or another. Been Windows free ever since.

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