Asus Radeon HD 7770 DirectCU TOP 1GB Graphics Card Review

The moniker that this card brands; TOP really does mean that it has Top Overclocking Performance, but for us, what it leaves the factory with just isn’t enough and we wanted to see how much further it could be pushed and therefore found ourselves firing up our trusty tools of the trade to see how far we could push this card, while still keeping it stable.

With a clock speed of 1120MHz on the GPU clock and memory speed of 1150MHz, we were hopeful that we could squeeze a little more from the GPU clock and a lot more from the memory. We already know that the 7770 cards are fantastic at overclocking, and with a DirectCU cooler bolted on this bad boy, we were expecting some great results and we weren’t disappointed with us ending up at 1195MHz on the GPU clock (6.6% increase) and 1510MHz (6GHz Effective) on the memory clock (31.3% increase). These are some fantastic numbers and we have to hand it to Asus, they’ve made a fantastic card for overclocking.

We then wanted to check stability and to see what kind of increase we had got from overclocking the card further so we fired up 3DMark 11 to see how the score had changed on the Extreme preset from its original score of 1201 points.

As you can see, we had a bit of a chuckle with the score as it was quite “l33t” but is a nice increase from 1201 to 1337 giving us an 11% increase in performance overall in 3DMark 11.