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post #41 of 76
You can dual 460's on a 650W PSU, Dual 470s isn't advised with 650W--750W+ is advised with dual 470s. With Dual HD6950's, you should be safe on a GOOD 650W.

I say HD6950 and get an SSD. Further down the road, grab another HD6950.
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post #42 of 76
Thread Starter 
Quote:
Originally Posted by tsm106 View Post
Do SLI or CrossFire double the memory ?
This is one the questions that many people make mistake understanding it .
The answer is NO , SLI or CrossFire doesnt double the memory , You have a 512MB card , adding another card wont make your memory 1GB, it still will be 512MB,so both cards will use 512MB of RAMs but the memory won't double.

http://www.tomshardware.com/forum/24...crossfire-faqs


^^FAQs I always forget, had to dig that up from the archives.


**Take home bullet point: 6950/70s have 2GB vram. 6950 is 300 bucks and can be unlocked to 6970 (100% chance), ram stability aside.

This is completely confusing me even after reading the FAQ:
"...so both cards will use 512MB of RAMs but the memory won't double"

If each card is using 512MB, then how is my memory NOT doubled!? I have two cards, each running 512MB, whereas before I had one card with 512MB. Seems like it doubles to me. I'm definitely missing something here.
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post #43 of 76
Quote:
Originally Posted by PDXgeek View Post
This is completely confusing me even after reading the FAQ:
"...so both cards will use 512MB of RAMs but the memory won't double"

If each card is using 512MB, then how is my memory NOT doubled!? I have two cards, each running 512MB, whereas before I had one card with 512MB. Seems like it doubles to me. I'm definitely missing something here.
SLI/CF will only use the vram from the smallest card. Physically you will have 1GB=512+512, but that's not under SLI. Physical vram amount is basically MEANINGLESS. How much vram SLI/CF uses is the only thing that matters.
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post #44 of 76
Quote:
Originally Posted by PDXgeek View Post
This is completely confusing me even after reading the FAQ:
"...so both cards will use 512MB of RAMs but the memory won't double"

If each card is using 512MB, then how is my memory NOT doubled!? I have two cards, each running 512MB, whereas before I had one card with 512MB. Seems like it doubles to me. I'm definitely missing something here.
I am too but it kind of makes sense...kind of.
post #45 of 76
Thread Starter 
So total resolution is 5760(3x1920) x 1080, split between three displays.

How to determine what card configuration would reap the best results at these resolutions for the best price. Are there any reviews/comparisons conducted for triple monitor setups? Typical GPU reviews and comparisons seem to just report single display resolutions. I'll do some searching.
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post #46 of 76
Quote:
Originally Posted by PDXgeek View Post
So total resolution is 5760(3x1920) x 1080, split between three displays.

How to determine what card configuration would reap the best results at these resolutions for the best price. Are there any reviews/comparisons conducted for triple monitor setups? Typical GPU reviews and comparisons seem to just report single display resolutions. I'll do some searching.
At that res it's 580SLI, 6970 CF, and 6950 CF since only those cards have enough vram 1.5GB/2GB/2GB to deal with the demands and not get choked. Though the 570 does pretty great too. Psst, hardwarehaven.
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post #47 of 76
Thread Starter 
Here's something I'm assuming but want to make sure I'm correct on...

So if I had three 1080P displays, and three gtx470's I should get the exact same performance on each display, as I would using one display with one 470, correct?

In other words if I have three identical cards, each driving a single display, then each display should be able to utilize the card fully, right? Seems like a reasonable assumption.
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post #48 of 76
Thread Starter 
I'm going to search for any 2010 reviews for card configurations driving 3 displays. But let me know if anyone knows of such a comparison.
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post #49 of 76
best bang for buck are the 6950 in CF.

They are pretty close to the 570, cheaper, and have enough memory to handle it.

Maybe when the 560 comes out it will be better, but I doubt it.
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post #50 of 76
Quote:
Originally Posted by PDXgeek View Post
Here's something I'm assuming but want to make sure I'm correct on...

So if I had three 1080P displays, and three gtx470's I should get the exact same performance on each display, as I would using one display with one 470, correct?

In other words if I have three identical cards, each driving a single display, then each display should be able to utilize the card fully, right? Seems like a reasonable assumption.
No.

If you want to use 3 monitors with each card driving a display fine, but you can't game on that. If you load a game up it will only run on 1 display. You have to go SLI/CF to use the other gpu's which will only use the vram on the smallest card. Stop assuming and just accept it?
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