AMD releases an update to the Radeon HD 7950, as they have given it Boost functionality. The boost functionality itself and the core is now allowed to boost to 925 MHz. That means that under the right conditions the card gets a bump of 5 to 10% performance according out measurements. Will it make a big enough difference to compete with the new GeForce GTX 660 Ti ?

In this review we'll look at the GeForce GTX 660 Ti from Palit, it's their all beefed up version, the GeForce GTX 660 Ti JetStream version. The GTX 660 Ti again has been equipped with a JetStream series cooler yet which remains a 3-slot design. It runs at a core clock frequency of 1006 MHz, has a boost frequency of 1085 MHz and the effective memory data rate (192-bit) is 6108 MHz.

We review the MSI GeForce GTX 660 Ti Power Editon OC. That custom PCB is once again loaded with their Military class III component selection and as such they have made a product that impresses just by looking at it. It feels strong and sturdy, nothing is bendy or fragile. The Power Edition as tested today comes with a factory overclock of 1020 MHz and 1098 MHz on the boost clock.

We review the Gigabyte GeForce GTX 660 Ti Windforce OC. Gigabyte's offering in the form of a GV-N66TOC-2GD, it's factory overclocked, customized and custom cooled. Let's head on over to the next page shall we.

We review the MSI Radeon HD 7770 Power Edition. MSI recently released an updated Radeon HD 7770 1GHz edition with their own 1.1 GHz custom model. They use their own custom 4-layer PCB and equipped it with a dual cooling solution. I say dual here as you get an extra fan that you can pop onto the card for extra cooling. MSI also opened up the voltages for Aux, GPU and memory making the card very tweakable.