As computer enthusiasts known as overclockers succeed in obtaining ATI's most powerful graphics card to date ?the RADEON X1800 XT ?they manage to break performance records in widely popular 3DMark benchmarks, at least as long as it comes to single card configurations.

A computer enthusiast from Taiwan has obtained 10195 points in popular Futuremark 3DMark05 benchmarking suite using a RADEON X1800 XT graphics card. Utilizing only stock cooling, sxs112 overclocked the product to 691MHz for graphics processor (up from 625MHz) and 1628MHz for memory (up from 1500MHz). While the reached frequencies weren't so impressive, considering stock frequencies, the total score overtook psychological barrier of 10 000 points.

Another well-known enthusiast from Finland decided to replace the stock cooling on RADEON X1800 XT with Zalman CNPS-7000Cu microprocessor cooler. Macci had to raise VPU voltage by +0.15V above default. Since Zalman's cooler also provided additional cooling for memory chips, RADEON X1800 XT graphics card topped at impressive 759/1738MHz for chip/memory. Macci achieve 10770 points in 3DMark05, an unbelievable figure for single card configurations.

Overclocked NVIDIA GeForce 7800 GTX graphics cards so far have not achieved 10?00 points in 3DMark05. Still, currently there is a problem with overclocking of ATI's new products by mainstream enthusiasts. Only a handful of well-known overclockers have received a special tool that can boost the speed of the RADEON X1800-series.

The current world's highest 3DMark05 result is 17433. It was obtained on two overclocked GeForce 7800 GTX graphics cards in multi-GPU SLI mode.

• XtremeSystems.org: ATI X1800XT OC @ 691/1628 All Air.