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2x 6950's or a single GTX 580 - Page 4

post #31 of 79
Quote:
Originally Posted by Zmanster View Post
Some posters state that you should get the 6950s and unlock them to 6970s. If you chose this route, you need to get lucky. There are only a few 6950s that can unlock to 6970s (do a search.....you should find a thread or two on OCN that will tell you which 6950 manufacturers who "MAY" produce unlockable gpus). As everyone states, 6950 CF is faster than a single 580, however if you want to future proof your gpu capability, then you should go with the 580 and if you need, SLI the 580 down the road. Two 580s kick two 6950s arses!
I've got a huge problem with this.

First off, out of the first revision of 6950 PCB's released there was a nearly 95% success rate for unlocking to a full 6970. It wasn't some luck thing, more like an unlucky thing if yours didn't unlock.

In addition, the regular 580's (the 1.5GB varieties) are less future proof than 6950's. In fact the original 580's were awful for Surround or even gaming at 2560X1600 in some cases due to that pesky VRAM wall. I won't disagree they have horsepower to spare, but it wasn't until the 3GB revision that the 580's became worth the cash.


Quote:
Originally Posted by Chris13002 View Post
Keep in mind, people posting 6950's and unlocks, have to be reference which are now harder to find...
If you decide on Nvidia, I would highly recommend EVGA as their support is great... Note with newer ATI cards, that overclock switch voids warranties...
I can take my card apart, overclock it, burn it out, and not worry about EVGA trying to fight with me as they enforce overclocking...
Not only that, the gtx 580 is quieter than the crossfire setup...

Wrong. Non-reference cards and even the 1GB varieties have been able to unlock. Look no further than the TFIII from MSI if you want a stellar non-ref card that will unlock. And while EVGA is great, what are you talking about? There is no overclocking switch on a 6950 that voids a warranty. You might be thinking of the 6990, in which case you are still wrong. Lastly, ATI is dead and has been for a year or more. AMD is the name.
Edited by Senator - 8/9/11 at 12:37pm
    
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post #32 of 79
Quote:
Originally Posted by Senator View Post
I've got a huge problem with this.

First off, out of the first revision of 6950 PCB's released there was a nearly 95% success rate for unlocking to a full 6970. It wasn't some luck thing, more like an unlucky thing if yours didn't unlock.

In addition, the regular 580's (the 1.5GB varieties) are less future proof than 6950's. In fact the original 580's were awful for Surround or even gaming at 2560X1600 in some cases due to that pesky VRAM wall. I won't disagree they have horsepower to spare, but it wasn't until the 3GB revision that the 580's became worth the cash.
Not to mension for the cost of SLI GTX 580's you could get another 6950 down the line and run Tri-fire which would smash GTX 580 SLI.
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post #33 of 79
If you had a mid-size case I would question the airflow for 2 6950s, but with the HAF 932 u'll be fine.

It really doesn't matter. When in buying a whole new GPU set-up, when in doubt go for single cards. The performance difference isn't too great and to add cards to upgrade the 6950s, ur going to 3 or even 4 cards. With a single 580, u may only need a second if u desire.

Also, ur running at 1920x1080, which favors a single 580 over the memory boost of the 2x 6950s.
Edited by slytown - 8/9/11 at 12:42pm
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post #34 of 79
Quote:
Originally Posted by Senator View Post
Wrong. Non-reference cards and even the 1GB varieties have been able to unlock. Look no further than the TFIII from MSI if you want a stellar non-ref card that will unlock. And while EVGA is great, what are you talking about? There is no overclocking switch on a 6950 that voids a warranty. You might be thinking of the 6990, in which case you are still wrong. Lastly, ATI is dead and has been for a year or more. AMD is the name.
Thanks for the corrections, I don't know why I thought all 6900's had the switch ...
This thread was already meant to start a war with with you die hard fans on both sides...
Op, if you have had AMD issues in the past, I don't see a bad reason for you to jump over to the green side... Like I mentioned before, both suggestions were great and good luck with your choice...
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post #35 of 79
Quote:
Originally Posted by Chris13002 View Post
Thanks for the corrections, I don't know why I thought all 6900's had the switch ...
This thread was already meant to start a war with with you die hard fans on both sides...
Op, if you have had AMD issues in the past, I don't see a bad reason for you to jump over to the green side... Like I mentioned before, both suggestions were great and good luck with your choice...
Well in a way your right. Most 69XX cards have a BIOS switch but not all of them. And in no case will it void your warranty to flip said switch with the exception of the 6990. The reason for that was the 6990 came preloaded with a 'factory overclock' if you will. Manufacturer's were afraid that utilizing the second BIOS would fry the GPU's. Insofar as I know, every manufacturer has since rescinded that though.

This thread doesn't need to start a war at all. Lets just keep it to the facts and help the OP decide.
    
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post #36 of 79
Quote:
Originally Posted by VinhDiezel View Post
I would get 2x 6950 2GB and try to unlock it to 6970s, its like $580 before rebates for 2x 6950 2gb and $499 minimum new at newegg for a GTX 580...I think you will be happy with the performance gain in CF imo.
Might as well have some fun for less.
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post #37 of 79
Thread Starter 
ok, thanks for all the feed, I've read everything....HD 6950's seem like a more convincing option. The scaling seems to be more reliable according to some of your posts. So looks like I'm going with the xfired 6950's!
post #38 of 79
Quote:
Originally Posted by snow cakes View Post
ok, thanks for all the feed, I've read everything....HD 6950's seem like a more convincing option. The scaling seems to be more reliable according to some of your posts. So looks like I'm going with the xfired 6950's!
You won't be disappointed.
post #39 of 79
Quote:
Originally Posted by Booty Warrior View Post
You won't be disappointed.
Go away Booty. There we no greed/red arguements for you to settle this time.
    
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post #40 of 79
Don't put all your eggs in unlocking the 6950s basket, you have to find the reference designs or the one's that do unlock (non-reference) which are few as well. I waited a month for a reference to show up at newegg. Now, I think most of them are EOL and phased out. Be careful, some cards makers are leaving the reference card's pictures, specs, and model # and you'll be sent a non-reference card (Visiontek and Diamond have been the most recent complaints I have read).

Two 6950s will beat a single 580. You can find 580s now selling as low as $400usd each (keep looking) and if you sli two of them in the future, they will surely surpass two 6950s. I did enjoy my three 6950s unlocked for the brief moment I had them but I didn't like the amd drivers (go fig ) so I plunged into 580s.

Also, the 6950s are really hot and noisy (especially the reference models) so two cards will give you more noise and heat. Try to find the one's with better coolers, like the TF2/3. GTX 580s are a bit less nosier but they do produce a bit more heat since their power draw is bigger. Either can be solved by putting either cards on water.

Good luck
Edited by wermad - 8/9/11 at 2:15pm
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