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Sapphire Radeon HD 7970 Dual-X 3GB OC Video Card Review (Page 2)

By Shawn Baker from Mar 7, 2012 @ 21:26 CST
TweakTown Rating: 97%Manufacturer: Sapphire

The Card


We've started to see this shroud design from Sapphire for a little while now and it looks fantastic. The aggressive lines and oversize nature of it with its massive fans make for a great looking cooler. Along with all that you can see the copper heatpipes coming out the bottom of the card and the massive aluminum heatsink sitting behind the fans.


On the power side of things we've got two connectors in the form of a single 6-pin PCIe and single 8-pin PCIe connector. Closer to the front we've also got two CrossFire connectors and next to that a Dual BIOS switch, which we'll be making use of today. We'll talk about that more in just a moment when we move over to the specification side of things.


As for the I/O side of things that is just very HD 7970. We've got a Dual-Link DVI connector, HDMI port and two Mini DisplayPort connectors on the far left. It's worth remembering as well that if you're on a DisplayPort monitor, we did find a Mini DP to DP connector in the bundle.


Pulling the card out of the box and sliding it into our testbed we fired up GPUz to check the clock speeds. Out of the box the card carries a core clock of 950MHz up from the default 925MHz while the 3GB of GDDR5 memory carries a 5700MHz QDR memory clock up from the default 5500MHz QDR.

Sapphire actually makes use of the BIOS switch on offer today, though, and by flicking over to the second BIOS on the card when the machine is off you're able to get an even higher overclock.


As you can see above with the BIOS switch in the second spot our core is pushed up to an even 1000MHz while the 3GB of GDDR5 gets bumped again coming in at 5800MHz QDR.

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