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

[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...