ATI indicates that all Radeon X1800 XT chips have been put through extensive tests to ensure that they operate at the speeds ATI has announced they will run at.Д¬urrently, the standard clock settings for the Radeon X1800 XT are 625MHz for core and 750MHz (1500MHz data rate) for memory. Not all board partners will be able to participate however as ATI still tries to maintain quality products that are based on their chips. These partners will be able to increase the default settings of those XT boards identified through testing to be capable of running at the elevated speeds. In response to numerous requests to allow our partners to create t heir own premium overclock or 'OC' configurations, ATI is willing to relax the rules for selected AIB partners willing to assume all responsibility for testing, yield and potential fallout and support at least 25MHz increment on the engine and memory clocks.

However, with the confidential advisory, ATI says: Not only was ATI against users overclocking boards but ATI refused to support similar activities by its board partners. This represents a major milestone in ATI's history, which until now has been very strict concerning overclocking. ATI has sent out an official advisory called 'Overclocking Configuration Support' to its board partners which allow a select number of partners to overclock boards based on Radeon X1800 XT chips.

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