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5970 with two 5870's in Crossfire? Good idea? - Page 3

post #21 of 30
6950's come in two versions 2&1Gb only the 2Gb can be unlocked
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post #22 of 30
i don't think getting a 5970 to go with your two 5870's is necessarily a bad idea. the only problem is that i think it will really only show gains in synthetic benchmarks. if all you are doing is gaming, i don't think adding a 5970 will yield you much, if any, benefit. you might consider adding another 5870 instead. you should also consider the extra power needed, and extra heat generated.

you might hit up eva2000 on this forum. he/she is running a 5970 and 2 5870's. they might be able to let you know exact pro and cons to running this kind of gpu setup.
post #23 of 30
Thread Starter 
LOL my bad, should've looked further!!! BTW I HATE PEOPLE who say "my bad" LOL.

I noticed that the 6950 has two 6-pin power connectors, whereas the 6970's have one 6-pin and one 8-pin. Will this matter or make a difference? Also, will unlocking a 6950 actually give you all of the gains that a NATIVE 6970 will?
Edited by [RAGE] S@!NT - 2/12/11 at 8:46pm
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post #24 of 30
None of the above. Wait another month or so for the dual-GPU 6990 to be released. There's a good chance it'll be the new king of cards, and roughly the same price as the 5970.
Or, go 2GB 6950's and unlock them. So far, it's been seen that an unlocked 6950 will give you the same performance as a stock 6970, and an unlocked/overclocked 6950 will give you the same performance as an overclocked 6970. It's worth mention that 69xx cards have great crossfire support; twice the cards, twice the performance.
You should atleast wait for the 6990, if you're willing to throw down so much cash.

Personally, I'd stick with the 5870's. Do you really need the extra performance? What can't you do right now?
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post #25 of 30
Quote:
Originally Posted by Ubernoobie View Post
just sell 5870s and get 6950s and unlock them, it'll do better in surround
I wish people would be stating that ^^^^

It's a hit or miss, no guarantee, especially now...
     
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post #26 of 30
I do hd5970+hd5870+hd5870. I started from one hd5970. Then I added one hd5870. Trifire is working very smooth. From my curiosity I bought another hd5870 at eBay for $220. Quadfire this way is not bad at all. I use both 10.5a and 11.1a drivers. I can almost max out Crysis Warhead or Metro 2033. Essentially all the games work fine (I have more than 100 games). At my best bench the framerate of Metro2033 reached 79.22 so far (by the standard of benchmark setting in this forum). I am doing this configuration just because I prefer to upgrade for either Nvidia 6-series or AMD 7-series. The difference between the video cards in my rig and those of current generation is too small to justify upgrades for me. If I were you, I would get hd5870 at eBay cheaply and do trifire for now. Then I would upgrade to a new video cards later this year when 32 (or 28)nm die video cards appear.
post #27 of 30
as with 4-way SLI, 4-way xfire scales awfully.

You aren't going to get much more performance than you're current setup anyway
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post #28 of 30
Quote:
Originally Posted by Fear of Oneself View Post
as with 4-way SLI, 4-way xfire scales awfully.

You aren't going to get much more performance than you're current setup anyway
Scaling is much better with the latest drivers but yeah, scaling was/is bad with older drivers.
    
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post #29 of 30
Quote:
Originally Posted by Mookster View Post
Personally, I'd stick with the 5870's. Do you really need the extra performance? What can't you do right now?
^^this.
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post #30 of 30
Once you go past tri-fire/SLI...the gains do not show much for the money and power put into it...

The biggest gain one sees is with a two cards crossfired/SLIed... Usually SLI scales better, but heard good things on AMD6800 series...

You gain some to when you get to Tri-fire/SLI...Not as much of a gain...but some...In this instance tri-fire usually does better than tri-SLI...

Quad SLI or Fire is a overall waste of money and space on you mobo..Unless you have to have the highest synthetic score...or wish to Fold/BOINC more than in a Tri set up would nab you...
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