Let's see now the overclocking limits of the XFX HD 4770 graphics card using a typical trial-error testing procedure. We used the ATI Catalyst 9.4 auto-tune feature which allowed us to push the GPU core at a nice 830MHz and the memory at 850MHz.

While those numbers were impressive, we tried to go even higher. So we used the latest RivaTuner v2.24 and this file (save it under \Program Files\RivaTuner) that will enable overclocking. Using the FurMark will also help you determine the highest possible overclocking margin.

Compared to the default clocks, we got a faster GPU by 18.4% ( 888MHz) and a memory clock running faster by 25.6% (1004MHz).

Here is a screen shot from GPU-Z with the highest overclocking settings we managed to achieve (100% fan duty circle)

But what is the effect of these faster clockings in gaming? Take a look in the FPS results below. We ran 'Crysis' at the various resolutions and set the settings at 'High Quality'.

Notice that we pushed the fan to work at 100% for this test. For normal use, you can leave the fan speed to 'auto' reduce the core/memory clocks until you get a stable system.

- Conclusion

The XFX HD 4770 graphics card is a great surprise for everyone and the 40nm design of the card adds extra value to the product. Aggressively priced at just € 92~95 (including VAT), the XFX HD 4770 should be considered as an entry-level solution which however, directly competes with not only the Nvidia 9600GT but even with other more expensive solutions such as the Nvidia 9800GT the AMD HD4850.

The card retails in a well-designed package although XFX has not included any game title inside.

Our tests showed that the HD4770 offers a superb performance for the category with low operation noise, high frame/second and high overclocking margins. In the majority of our tests, the XFX HD4770 was faster than the Inno3D 9800GT but it stayed behind the HD4850. We assume that AMD didn't want to cannibalize its own product line by offering a cheaper and more powerful product within such a short period.

We should notice that the currently available drivers need some work. We expect the upcoming ATI Catalyst 9.50 to further work things out and by offering official support for the HD4770.

Overall, we have to do with a killer product for entry-level users. The price is under €100, the performance is superb, and we cannot think what will happen when we put two HD4770 in CrossFire mode. A great value for your money, and an Editor's choice award for the XFX HD 4770.