Radeon HD 4830 

The card is very quiet, while still running at acceptable temperatures under load.

All modern graphics cards are designed to withstand operating temperatures of up to 120°C. However, nobody dares to go close to that because users could burn their fingers which could result in a lawsuit.

While the idle temperature is quite low, the load temperatures are rather high (but still far from too hot).

Retail cards might be affected by shader count issue.

It has only 560 shaders instead of the intended 640.

Compared to the bigger brother, the HD 4850, AMD reduced the number of shaders from 800 to 640.

Considering price/performance, the HD 4830 is one of the best offers on the market today only rivaled by some low-end NVIDIA cards.

Two, three or four HD 4830 cards can be combined in CrossFire to improve performance or image quality.

Last but not least, the clock frequencies were reduced to 575 MHz core and 900 MHz memory as well.

Those overclocks are incredible.

During testing I actually thought my overclocking program is broken.

It uses a big copper base to cool the GPU, memory and voltage regulation circuitry.

The GDDR3 memory chips are made by Qimonda (formerly Infineon) and carry the model number HYB18H512321BF-10.