This is not the world's best graphics card. But then, no card is. But this is a very capable and well-priced card.
When I first got it, the first thing I did was try to run Call of Duty Modern Warfare 2 on it. It runs at the full resolution of my monitor (1680 x 1050) with all the graphics options turned to the maximum and it runs without any problems or slowdowns. Nice.
In fact, I have struggled to find any game that it doesn't run well. I ran GTA IV on a normal 9800 card (also from Palit) with only 512MB of memory and I had to dial down some of the settings. With the extra memory on this, I could turn everything right up again.
Windows desktop performance was perfect and software that actually uses the card's abilities (eg Photoshop uses OpenGL to accelerate certain functions like zooming) ran as well as anyone could expect.
Overall, there's nothing wrong with this card, but there's nothing outstanding about it either. It does a good job for a good price. And the difference over a standard 9800 GT is well worth it. If you want a capable graphics card but don't want to pay 300 quid, you won't go wrong with this.