VRAM Usage - 6970 (2 GB) vs. GTX 580 (1,5 GB) vs. GTX 580 (3 GB)

[Codex]

Originally Posted by madrebel

no, you can't. each GPU has X memory. gpu1 can't access gpu2's memory. if GPU2 even wanted to access GPU1's buffer then this would slow down the frame draw process which is why it isn't done.

I know. I was replying to Buchon's comment about VRam and System Ram.

[GOZR]

The best way for SLI is split rendering half the screen and the other for the other half..

Split work better no matter what .. NVIDIA profile now do not have this option but i tried all and it's still better for high textured sim

[Armatian]

Split frame doesn't share the load evenly, there's no perfect method, you can easily have one half having a huge HDR/shading workload and the other half showing the floor.

On topic: It looks clear in luthier statements that the engine need resource optimizing (should improve memory use), and more fine threading, because the same thread that renders, needs to load finer textures when you'r close to ground, hence horrible stutter you all see.

[Ataros]

Originally Posted by madrebel

yes it does you just have to setup realtime monitoring.

evga precision and msi afterburner are just different versions of rivatuner.

As far as I know rivatuner is supposed to be used with nVidia cards. Do you manage to use it to monitor ATI memory usage?

[madrebel]

it can be used with ati GPUs as of the 8500 series. i would recommend using evga's precision. you dont need an evga card to use it. i like it over the MSI version ... its just a UI thing they are both functionally equivelent.

[damar]

GTX 570 1280MB VRAM used up at 1680*1050 ultra high setting on London.
Any guys have 2G VRAM tested it?

[Oldschool61]

Originally Posted by madrebel

2xAA and 2xAF still only using 980-1gb ram. the game is likely reserving a small amount of the GPU memory space.

performance wasn't any better or worse with these settings enabled/disabled. also, performance from medium to ultra didnt change for me either.

again, this points to a cpu bottlneck not a gpu bottleneck.

my system is:
c2d e7200 @ 3.2ghz
4gb ddr2 @ 1066mhz
gtx460se @ 850mhz core/1700mhz shader 1990mhz ram clock

gives me about 10fps average low over london with ultra settings except seizure filter, grass, shadows, and roads unchecked with irror disabled.

again ram utilization hovers between 980-1010.

I dont think AA or AF have much effect on memory those are more calculation based.. Resolution and such drive memory more. Higher resolution the bigger the ram usage

[Armatian]

AF maybe, but AA has a great impact in the memory needed, specially at high resolution, it's like going extra resolution (in the case of 4xsupersample, like 4 times, but in msaa this is greatly reduced)

[Saintblu]

Sapphire 6950 2gig VRAm here... London was 10 fps on everything maxed

BUT... I have a shit CPU (although everyones CPU is not being utilized to their full potential atm) a Dual core Athlon 3.2ghz even with affinity mask...

Over land I get about 40 to 50 fps with everything high but no forest and med buildings

Over the channel 50-60 fps

shit motherboard too by the way...

I upgraded from Nvidia GTX 260 fyi It's a great card too. If the game was optimized I think the 260 could have made me happy with everything Medium and models high...

[Slechtvalk]

Originally Posted by madrebel

no, you can't. each GPU has X memory. gpu1 can't access gpu2's memory. if GPU2 even wanted to access GPU1's buffer then this would slow down the frame draw process which is why it isn't done.

this is setup picture from someone with 5970 (2 gig memory), when i use same settings (with my 1 gig memory card) you see video memory usage over 100%, and he's only using 51% of his memory (its says on picture below) which means he does got 2 gig video memory?

And why would ATI sell that card saying it has 2 gig when you only can use 1 gig anyways?