My question: 1. is there a performance difference in 128MB and 256MB cards? There are other questions, but I'll ask them later in this post.
Some benchmarks would be very helpful in this thread.
I know that cards with extra memory (256MB, 512MB, 500,000GB in 2020, etc.) can access texures very quickly, a-la-doom 3 and its "recommended" settings, which include: Normal, for 128MB cards, High, 256MB, and Ultra, 512MB.
I have tested my Nvidia 5900 (AGP) 128MB card on high and ultra @ 1024x768. It can run Doom 3 with these settings, but it still looks like crap (High performance mode & no AA/AF). It also stutters like satan himself is urinating on my video card.
2. If I were to use a higher MB card, would the stuttering go away, or improve?
As technology rolls onward, so do the speed of video cards. 3.Considering my 5900 stutters a lot in High and Ultra modes in Doom 3, would a faster 128MB card, like a 6800GT, or a fast ATI (Are any of the ATI X800's 128MB?) get rid of the stuttering, and would the improvment be as good as a 256MB card?
This one should give your brains some stimulation.