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VRAM available in 6950+6990 CF

post #1 of 13
Thread Starter 
Alright guys I got a riddle for you.

I know that if you CF a 1gb 6950 + 2gb 6950, the vram available for cf is 1gb. BUT! the 6990 has 4 gbs of ram! so if you cf the 2 gb 6950 + 6990 does the vram drop to 2gb? That seems like a waste of money!

I might be misinformed here to believe that a 6990 has 4gbs of vram.

OCN solve this riddle
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post #2 of 13
The 6990 has 4gb TOTAL, each 6950/6970 has 2gb so you'll end up with 2gb total.

Make sence?
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post #3 of 13
Thread Starter 
Oh OK thanks. So I won't be missing out on vram then. Great! Whats the point of stating that the 6990 has a total vram of 4gb when you're technically using 2?
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post #4 of 13
The 6990 has 2gb of vram per gpu. AMD combines the total vram to come up with 4gb.
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post #5 of 13
Quote:
Originally Posted by nbmjhk6 View Post
The 6990 has 2gb of vram per gpu. AMD combines the total vram to come up with 4gb.
This. Your original statement is wrong. The 6990 is dual 6970's (if I remember right), which are 2GB cards. So you've still only got 2GB of useable VRAM.
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post #6 of 13
6990 has two GPUs on the card. There are 4GB of VRAM on the card, but it is split in half by each GPU. Effectively, each GPU has 2GB of VRAM.
post #7 of 13


as u can see the memory is 2048 mb
so its 2gb usable
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post #8 of 13
Same thing with the new 580's, they say 3gb but its really 1.5per gpu.
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post #9 of 13
Thread Starter 
sounds good! hopefully I'll be getting my hands on a delicious 6990 soon.
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post #10 of 13
Quote:
Originally Posted by sid0972 View Post


as u can see the memory is 2048 mb
so its 2gb usable
There is 2gb per core 4gb in total the image only shows one core if you switch to the second you will see another 2gb
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