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Sapphire Radeon HD 7970 GHz Edition Vapor-X 3GB Overclocked Video Card Review

By: Shawn Baker | AMD Radeon GPU in Video Cards | Posted: Aug 14, 2012 5:15 pm
TweakTown Rating: 94%Manufacturer: Sapphire

The Card




Straight away the first thing we notice is the massive cooler with the two large 90mm fans that should do a good job of cooling. Looking carefully, though, we can see four heatpipes coming out the bottom, a massive aluminum heatsink in the background and behind that we can actually see the copper plate. We'll find out soon enough if this Vapor-X cooler performs as well as it looks.






Moving around you can see at the back we've got an 8-pin PCIe and 6-pin PCIe power connector. This is slightly different to the TOXIC model which used the more aggressive dual 8-pin setup we see on higher end variants of these top-end cards. Closer to the front you can see we've got our two CrossFire connectors and the EZ OC Boost button which at a click boosts the speed. We'll cover this in a little more detail when we look at the specifications.




Finishing up with the I/O side of things you can see at the top we've got a vent alongside a Single-Link DVI connector. Below that we've got a Dual-Link DVI connector along with a HDMI port and a DisplayPort to round off the connectivity side of things.





Out of the box if you don't touch the EZ OC Boost button that's present you'll get a core clock of 1000MHz while the 3GB of GDDR5 comes in at 6000MHz QDR. If you hit the EZ OC Boost button you won't see a change on the memory, but the core will be pushed to 1050MHz.




Using MSI Afterburner we managed to push the core up to 1205MHz while the memory saw very little wiggle room coming in at only 6100MHz QDR.


These clocks are similar to the recently reviewed Sapphire HD 7970 GHz Edition TOXIC 6GB, the main difference, though, was that we managed to get a massive overclock out of the card, which saw it come in at 1280MHz on the core and 7000MHz QDR on the 6GB of GDDR5.

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