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Is This 670 Unlocked? - Page 3

post #21 of 23
Thread Starter 
Quote:
Originally Posted by friend'scatdied View Post

You're free to get the 7970 if you prefer, though good 7950s will match good 7970s in maximum attainable clock speeds while operating at only a 2-5% deficit on a per-clock basis (i.e. 1200MHz 7970 is about 3% faster than a 1200MHz 7950). IMHO, the price difference is too great to justify that 2-5%.
BIOS doesn't make a huge deal since you can overclock and adjust voltages manually.
The Gigabyte Windforce 3X cards seem to be the best bet for PCB quality and thermal performance with a low noise profile.
But does the 7950 bios have a cap? As in, if I watercool it, can I just overclock until it's at its max, or does the speed have a cap, where you can't go any higher?
Also, I am finding it very difficult to find any of the cards with a black PCB. The Windforce cards use a blue PCB, Sapphire cards use a blue pcb... But I need a black pcb. Because even when they're watercooled, and have a back plate, you can still see some of the PCB.
post #22 of 23
Quote:
Originally Posted by Jeremy1998 View Post

But does the 7950 bios have a cap? As in, if I watercool it, can I just overclock until it's at its max, or does the speed have a cap, where you can't go any higher?
Also, I am finding it very difficult to find any of the cards with a black PCB. The Windforce cards use a blue PCB, Sapphire cards use a blue pcb... But I need a black pcb. Because even when they're watercooled, and have a back plate, you can still see some of the PCB.
No, there is not a hard cap on clock speeds. With watercooling and ample voltage I don't doubt 1200MHz would be in shooting range.

If you are watercooling out of the gate, go for the MSI Twin Frozr 7950. I believe that uses the 7970 PCB so you can use a 7970-compatible waterblock but you should confirm to make sure.

More info for you here: http://hardforum.com/showthread.php?t=1704168
7950 with a 7970 PCB seems like a bet you can't lose.
Edited by friend'scatdied - 9/16/12 at 9:05am
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post #23 of 23
Thread Starter 
Quote:
Originally Posted by friend'scatdied View Post

No, there is not a hard cap on clock speeds. With watercooling and ample voltage I don't doubt 1200MHz would be in shooting range.
If you are watercooling out of the gate, go for the MSI Twin Frozr 7950. I believe that uses the 7970 PCB so you can use a 7970-compatible waterblock but you should confirm to make sure.
More info for you here: http://hardforum.com/showthread.php?t=1704168
7950 with a 7970 PCB seems like a bet you can't lose.
The EK waterblock finder says that that is a reference 7950... And they don't carry that block any more.
Somebody somewhere said that Sapphire cards are very high quality. So, this is one I found. It's got a matte black pcb, and uses the reference 7970 board. What do you think of it?
http://www.newegg.com/Product/Product.aspx?Item=N82E16814102991
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