I've been using these drivers for a couple of hours without crashing in GTA IV.
I would normally crash every hour or so with the previous version, so thats a definite tangible improvement.
They are still unstable. Read on a forum they can fuck up good.
8.11 is the best to go man. For ATI 4870X2 bud and thats what Rockstar recommends.
And I havent had a crash or anything. The occasionaly glitch but thats the game, not my system.
We need a patch for SLI, optimization, bug fixes, crossfire support (cause the gta only recognizes 1024mb of mem when I have double that).
Apparently, thats whats gunna be in the first patch they release.
They are still unstable. Read on a forum they can fuck up good.
8.11 is the best to go man. For ATI 4870X2 bud and thats what Rockstar recommends.
And I havent had a crash or anything. The occasionaly glitch but thats the game, not my system.
We need a patch for SLI, optimization, bug fixes, crossfire support (cause the gta only recognizes 1024mb of mem when I have double that).
Apparently, thats whats gunna be in the first patch they release.
Unless you have a 4870X2 with 4GB RAM (I haven't seen one available) GTA and any other game will still only see 1GB since the 2GB are split in half, 1GB for each GPU. Thus games can and will only use 1GB (cloned for both GPU's). That's the way crossfire/SLI works. You don't have 2GB shared RAM for both GPU's, you have 2*1GB, one per GPU, and thus your framebuffer is 1GB. Perhaps someone can explain this in a clearer way?
They are still unstable. Read on a forum they can fuck up good.
8.11 is the best to go man. For ATI 4870X2 bud and thats what Rockstar recommends.
And I havent had a crash or anything. The occasionaly glitch but thats the game, not my system.
We need a patch for SLI, optimization, bug fixes, crossfire support (cause the gta only recognizes 1024mb of mem when I have double that).
Apparently, thats whats gunna be in the first patch they release.
Unless you have a 4870X2 with 4GB RAM (I haven't seen one available) GTA and any other game will still only see 1GB since the 2GB are split in half, 1GB for each GPU. Thus games can and will only use 1GB (cloned for both GPU's). That's the way crossfire/SLI works. You don't have 2GB shared RAM for both GPU's, you have 2*1GB, one per GPU, and thus your framebuffer is 1GB. Perhaps someone can explain this in a clearer way?
other games use the 2GB's....and it says they are gunna fix this on the rockstar website (or some site dedicated to GTA....im fuckin tired as ass, cant remember where I read it).
Each of your "Cards" has it's own dedicated 1 Gig which are separate from each other and individual. As mentioned above the amount is cloned so each GPU has access to it's own memory. The card's don't dynamically allocate based on demands so you cannot use more than 1 Gig and 1 Gig is what applications see.
When you use the gpu's you also have access to the ram.
Problem with GTA IV is that it doesn't use both gpu's on the 4870X2.
Each cpu renders every other frame, thats how crossfire works, even the bridged version. This is called "Alternate Frame Rendering"
This is of course only one method of using crossfire, another is to have the gpu's render individual parts of a scene, one will render the top the other the bottom which is called "scissoring".
Then theres "Supertiling" which sets each gpu to render invididual 32 by 32 pixel squares of the screen, alternating between them all the time to render the whole frame.
For the gpu's to know what to render and what not to render they share adresses of memory blocks all the time, and depending of rendering method these adresses might have a longer or a shorter range, the interval of them will vary as well.
Also yes, having more vram helps with AA.
I haven't noticed it (You do mean that when you turn around in-game the HDR brightness becomes unnaturally bright as you turn or move around?)
EDIT: Freeze bug still present though but I don't think it has to do with the GPU.
(Game freezes randomly and requires a CTRL-ALT-DEL shutdown, some people fix it by running in windowed mode - which disabled Crossfire and thus lower framerate - whereas others like me fixes it by running with VSync enabled via INI editing or the game options, sometimes though I have to use both of these methods together, especially at smaller interiors and even more so if those interiors are uninhabited.)
Last edited by JBeckman on Fri, 5th Dec 2008 20:29; edited 1 time in total
I just did a better test and part of it is still present now that I checked a bit more in-depth, not as noticeable as before but still there.
(Certain angles, usually when blocking the "sun" itself with another object or character.)
Might be improved in the final 8.12 drivers but as I think was mentioned already somewhere it's the 9.1 drivers that'll see Fallout 3 improvements from what I've read.
(Think I posted the actual article somewhere here as well.)
EDIT: HDR bug (Or whatever it is) screens.
(Yeah I use a bunch of graphic mods like this one for Fawkes "she" - yes it's a woman, read the logfiles - deserved to look a bit better. )
Yes, but when you increase the resolution and enable AA and AF, the cards benefit greatly by the extra VRAM.
thank you, tis what I meant
Im not gunna use 8.12 till its final.
8.11 makes GTA run fine enough for me.
Now Im just waiting for the patch to include SLI and optimize the game (which rockstar said they are gunna do plus a ton of other shit). Patch is prolly gunna be big
Actually the picture will show up whether it's on or not, atleast thats what I see here. Also with crossfire on the performance is 30% lower than without.
So it's pretty useless and thus unsupported.
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Shame ATI aren't fixing the issue... It's a pretty high profile, and it certainly is a Crossfire issue, because it goes away in single card mode.
)
How do I disable just Crossfire?
