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new crossfire vs sli which is better? - Page 4

post #31 of 43
Straight from SLIzone.com:

Quote:
Originally Posted by SLIzone
How many monitors are supported when running in SLI mode?
When in multi-GPU mode, SLI currently supports one monitor. When in single-GPU mode, users have the ability to use up to four monitors using NVIDIA® nView® multi-display technology and Windows XP Dualview.
You're probably not running in SLI mode if you can attach two monitors and make it work. (note: if both monitors display an identical image, that doesn't count )
    
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post #32 of 43
Quote:
Originally Posted by Chozart View Post
You're probably not running in SLI mode if you can attach two monitors and make it work. (note: if both monitors display an identical image, that doesn't count )
That would be why, we were just mirroring.
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post #33 of 43
Quote:
Originally Posted by Murlocke View Post
I hate to disagree with Chozart, its probably the biggest sin on this forum.

I connected 2 LCDs, 3 days ago on my computer (Under Vista 64-bit) and it worked. We were just comparing my friends monitor to mine. I've also heard that SLI/CF doesn't support dual monitors so I was like "Wow...". I connected both monitors to the top card, i'm wondering if people are trying to connect 1 monitor to the top card, and 1 monitor to the bottom card?

I'm running the latest beta drivers.
Did you play a game though? Maybe it allows it in 2d mode.
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post #34 of 43
Quote:
Originally Posted by ElMikeTheMike View Post
yea that outside dongle that you only ever have to screw in one time is a real ball buster.
lol
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post #35 of 43
When I was talking about buying one higher end card that will smoke two lower end cards, and paying less money.... here is an example:

My friend just built his rig with two SLI'd Evga 7900GS's. I told him he should get an 8800GTS before he built his rig, but he said he didn't want to spend the money on one. I didn't know the prices offhand but I was almost sure it was cheaper for one GTS (and faster, which we agreed on). So I looked it up:

Evga 7900GS 256mb = 149.99 X 2 = $299.98
Evga 8800GTS 320mb = $289.99

I never told him about this afterwards because I didn't want to rub it in or make him feel bad. Maybe I should though, for his own good...
    
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post #36 of 43
Thread Starter 
yea but i think having a sli/cf is better because rather then buying a card with a lot of money at one time which is hard for some people they can buy one card eg x1950pro and then buy another when they have enough money.
post #37 of 43
Quote:
Originally Posted by zoob View Post
yea but i think having a sli/cf is better because rather then buying a card with a lot of money at one time which is hard for some people they can buy one card eg x1950pro and then buy another when they have enough money.
True. If you don't have the immediate funds, I agree that it's much easier to buy one card, then save up for another one later. +1rep
    
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post #38 of 43
Quote:
Originally Posted by zoob View Post
yea but i think having a sli/cf is better because rather then buying a card with a lot of money at one time which is hard for some people they can buy one card eg x1950pro and then buy another when they have enough money.
But when you decide to get the second card, it's probably a better option to sell that X1950PRO and get a single 8800GTS. The 8800GTS will perform similarly to a pair of X1950PRO's and have the DX10 advantage.



I had a Crossfire rig (X1900CE + X1900XT), but I broke it up since I got a second rig. Then, I was able to sell the X1900CE for good money, and purchasing the 8800GTS 640MB cost me only $80 extra or so (I could have gotten an 8800GTS 320MB with money to spare).. Thus, in my opinion it's always better to upgrade to a higher level card than to buy one card now with the idea of adding a second one.

Also realise that if you stick with single card, you can save quite a bit on your motherboard.
    
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post #39 of 43
if you add a second one its not double performance.

Its more like 3/4 or 1/2 (if not bottlenecked by mobo).
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post #40 of 43
Quote:
Originally Posted by iampoor View Post
if you add a second one its not double performance.

Its more like 3/4 or 1/2 (if not bottlenecked by mobo).
Correct.

I'd say 3/4 is already a very optimistic estimate. In practical terms, 50% to 60% is the most you'll see.

Right now, with 8800's, you don't see much of an increase in benchmarks given the CPU bottleneck that inevitably occurs at lower resolutions. Only at insane resolutions does make SLI-ed 8800's sense.
    
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