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Black Friday Dilemma; 6950 2gb or 5970 2gb?

post #1 of 16
Thread Starter 
Newegg is having insane Black Friday specials. And since I'm looking to upgrade my EVGA GTX 460 768mb, I looked in the graphics card section of the deals...

... among them were a Diamond HD 6950 2gb for $230 and a Diamond HD 5970 2gb for $300.

Looking at benchmarks (like the one here for example) makes me think that it's worth spending the extra $70 on the 5970.

However, there are a few things I'm worried about. Are the 5000-series cards getting out of date? How does the shader-unlockability of the 6950 affect the decision?

Basically, I want to know which one will give me the best bang for the buck (and last me as long as possible. My computer supports Crossfire, and noise/heat are a non-issue (whatever card I decide to buy will get water-cooled).
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post #2 of 16
I would get the 6950. You can get some more ram with the $70 you saved. Or a better processor seeing that it might bottleneck the 6950.
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post #3 of 16
Quote:
Originally Posted by jackofhearts495 View Post

However, there are a few things I'm worried about. Are the 5000-series cards getting out of date? How does the shader-unlockability of the 6950 affect the decision?

Yes, they are irrelevant. The 6950 shader unlock affects the decision mildly.

Two things of note: the 2GB of VRAM on the 5970 is CrossFired, making it 1GB VRAM effective.

Secondly, since your board supports CrossFire, the nail in the coffin against the 5970 is that 2 6870s in CrossFire are cheaper and faster than the 5970.

You will be able to get to 6870s for less than $150 each; I believe there's one around that's between $120-130 (Sapphire, if I'm not mistaken) right now after coupons and rebates.
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post #4 of 16
Quote:
Originally Posted by friend'scatdied View Post

Secondly, since your board supports CrossFire, the nail in the coffin against the 5970 is that 2 6870s in CrossFire are cheaper and faster than the 5970.
You will be able to get to 6870s for less than $150 each; I believe there's one around that's between $120-130 (Sapphire, if I'm not mistaken) right now after coupons and rebates.

Excellent find, +Rep

Also, shader unlock on 6950 makes hardly nay difference, most of the difference is from the clock speed difference between the 6950 and 6970
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post #5 of 16
HD5870 Crossfire for $299. Forget the rest.
post #6 of 16
since 6870s have never been faster than 5870s, and a 5970 is 2 5870s on a stick, i really don't see how a pair of 6870s would be any faster....

unless AMD managed to make CFX scaling a ton worse than it was a year ago....with AMD, i guess anything is possible
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post #7 of 16
5970. no question.
post #8 of 16
Quote:
Originally Posted by reflex99 View Post

since 6870s have never been faster than 5870s, and a 5970 is 2 5870s on a stick, i really don't see how a pair of 6870s would be any faster....
unless AMD managed to make CFX scaling a ton worse than it was a year ago....with AMD, i guess anything is possible

Because:

1. Each Cypress XT core in the 5970 is severely underclocked (725MHz on the 5970 vs. 850 MHz on the 5970) to fit into the 300W total TDP limit AMD engineered around
and
2. 6xxx CrossFire scaling is indeed a great improvement over the 5xxx series. The 68xx Barts GPUs in particular are incredible when CrossFired.
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post #9 of 16
the 5970 was designed to run at 5870 speeds, but since you cant get PCIe cert. unless you are under 300w, they had to limit it somehow.

The cooler can dissipate the heat of 2 5870 dies running at full 5870 speed, so it really isn't a problem
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post #10 of 16
Also here's the 6870 deal:
http://www.superbiiz.com/detail.php?name=AT-6870_1G
Sapphire 6870
Use code iheartgames for $15 off. $20 rebate. I believe these two offers can only be redeemed once, so the first card comes out to $138.99. Second card is $173.99 if you're impatient, for a total of $312.98. $12.99 more, but it nets you a full retail package with accessories, better performance and two free copies of Deus Ex HR. Resell the second one for over $13 easily. Worth it IMO.
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