I was curious - I think I know the answer, but I'm not sure - When running either X-fire or a dual GPU card are you getting the benefit of doubling your video memory?
I play a modded game with custom models. We use pretty hi-res textures with the models. It's not unusual for the models to have 15meg of color texture maps plus another 5meg of illumination maps. There's also the background images, explosions, etc. 8-10 models on screen during a single skirmish/battle isn't uncommon. There are sometimes many more.
Typically, with a good card, frame rates, even with high poly counts, isn't a problem. I have a 3870 512meg and frame rates stay above the 85Hz screen refresh rate. Running out of video buffer and having texture swapping is the more common cause for lag in game play.
So, strictly from the video memory performance. Is a single GPU with 1gig of ram better than a dual GPU with 512meg per GPU? From what I understand dual GPUs are actually storing everything into memory twice, once for each GPU and you aren't actually getting the benefit of 1gig of RAM. Is that correct?
The cheapest way to upgrade my video performance is to buy a 2nd 3870 and running X-fire. If that doesn't increase my video buffer though it won't help any. I'd be better off buying a 4850/4870 1gig, if that's the case.
Thanks
I play a modded game with custom models. We use pretty hi-res textures with the models. It's not unusual for the models to have 15meg of color texture maps plus another 5meg of illumination maps. There's also the background images, explosions, etc. 8-10 models on screen during a single skirmish/battle isn't uncommon. There are sometimes many more.
Typically, with a good card, frame rates, even with high poly counts, isn't a problem. I have a 3870 512meg and frame rates stay above the 85Hz screen refresh rate. Running out of video buffer and having texture swapping is the more common cause for lag in game play.
So, strictly from the video memory performance. Is a single GPU with 1gig of ram better than a dual GPU with 512meg per GPU? From what I understand dual GPUs are actually storing everything into memory twice, once for each GPU and you aren't actually getting the benefit of 1gig of RAM. Is that correct?
The cheapest way to upgrade my video performance is to buy a 2nd 3870 and running X-fire. If that doesn't increase my video buffer though it won't help any. I'd be better off buying a 4850/4870 1gig, if that's the case.
Thanks