LockheedF22Raptor
9th January 2008 - 01:43 AM
Yang ni pakai double kad. Power gilerr..
The X850 XT Platinum Edition
For this test ATI sent us the least interesting graphic card of their new line, the fastest and most expensive Radeon X850 XT Platinum Edition. Here is a picture compared to a X800 XT:

This graphic card’s VPU is clocked at 540 MHz and 580 MHz for the 256 MB of GDDR-3 memory. The cooling system has also been revised and it’s now a double slot system, which looks a little like NVIDIA’s GeForce FX 5800 Ultra. This time the air path isn’t enclosed, and air inside the computer is sucked in through the back of the system and then expelled out after cooling down the copper fins.
We were initially a little surprised with the Radeon X850 XT PE in the noise test just as we were with the GeForce FX 5800 Ultra and its fan. When the computer is switched on, the fan reaches maximum speed and then slows down one or two seconds later. In 2D, the graphic card is quieter than the reference 6800GT/6800 Ultra NVIDIA PCI Express, but noisier than the X800 XT. In 3D, fan speed increases and is more noticeable. The noise level is still bearable, (maybe not for those who like very quiet systems), but is still above a Radeon X800 XT even if it is comparable to NVIDIA’s GeForce 6800 Ultra in PCI Express.
We used the latest ATI 8.08 RC2, the Catalyst 4.12 pre-version, which should be released in a couple of weeks. The only change is an Overdrive improved version only for the X850. It’s possible to manually change graphic card frequencies and automatically find the maximum frequency compatibility (like with NVIDIA and Coolbits) via the Catalyst Control Center, which is still somewhat tedious.
The automatic overclocking isn’t completely functional. The only effect on our computer was an automatic crash without saving the last functional parameters contrary to what was indicated.
In terms of overclocking we reached a stable configuration without any graphic bug at 580 MHz for the VPU and 600 MHz (+7.5% and +7.1%) for memory. This result isn’t great, and is only indicative of a reference graphic card. Compared to previous graphic cards, ATI seems to have given a little more margin for overclocking here. With the X800 XT it was barely possible to reach over 4%.
The test
For this test we used the following configuration:
- ASUSTeK P5AD2-E (i925XE)
- Intel Pentium 4 560 (3.6 GHz) GHz Socket 775
- 2x512 MB DDR-2 533 in 3-3-3-8
- ATI Catalyst 4.12 RC2 / NVIDIA ForceWare 67.02
We remind you that since the SLI test we have included Half Life 2. We also use Colin McRae 2005 and IL-2 Sturmovik Pacific Fighters. To further push graphic cards performances we made all tests with anti aliasing 4X and anisotropic filtering 8X. Using graphic cards without this effect isn’t really interesting. ATI and NVIDIA driver’s anisotropic filtering optimisations are used in standard settings.
The GeForce 6800 Ultra was clocked at 425/550 MHz for the PCI Express version instead of 400/550 MHz for the AGP 8x version.