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Sapphire Radeon X850XT Platinum Edition AGP Review - Overclocking

Today we're looking at Sapphire's X850XT PE, or Platinum Edition. Not only that, but we'll be testing it in the AGP format since many of our readers have perfectly serviceable AGP motherboards and haven't felt the dire need to move on to PCI-Express as yet. So kick up your heels and relax as we take a tour of the latest and greatest offering from ATI in the form of the X850XT and we'll see how it compares to its smaller brother, the X800XT!

| AMD Radeon GPU in Video Cards | Posted: Aug 30, 2005 4:00 am
TweakTown Rating: 9.0%      Manufacturer: Sapphire

Overclocking

 

Just because we go out and buy a reasonably expensive video card doesn't mean we don't want to tweak it, does it? Of course not!

 

Default speeds of the X850XT board is 540MHz core and 590MHz memory; effectively 1190MHz with the DDR factor figure in. Since this isn't all the board can do I decided to put it through its paces a bit to see how far we could go. Though I was able to crank the core up over 600MHz, I ended up with artifacts, so I backed it off to 586MHz. At this core setting I was able to easily complete all benchmarking tests and none showed any sign of glitches.

 

The memory, on the other hand, didn't do nearly as well. It is speed rated at 600MHz and that was the limit I could maintain without artifacts. It would operate at around 610MHz before crashing the system but the display was not free from errors.

 

To show some of the more recent tests, I'll include a few charts that give you the results from default to overclocked performance.

 

 

 

 

All tests run showed a marked improvement, and we all know that faster is better!

 

How much does it cost?

 

Sapphire Technology RADEON X850 XT Platinum Edition, (256 MB) Graphic Card

 

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