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PEG Link Mode

Common Options : Faster, Fast, Normal, Slow/Disabled, Auto

Quick Review

PEG Link Mode is really nothing more than an integrated overclocking utility for PCI Express graphics cards. However, you are not given direct control over the GPU and memory clocks of the PCI Express graphics card.

You are given five options of Auto, Faster, Fast, Normal and either Slow or Disabled. However, our own tests have shown that the descriptions of these settings are inaccurate and the effect of PEG Link Mode varies from graphics card to graphics card, and even from motherboard to motherboard.

ASUS appears to implement different overclocking profiles for different graphics cards. The only way to confirm the effects of PEG Link Mode on your card would be to boot up with a particular setting and check the core and memory clock speed of your graphics card, or benchmark it with a game.

Sometimes, the motherboard just overclocked the graphics cards by a fixed quantum, irrespective of the actual BIOS setting,. In other cases, the BIOS setting actually provides some control over the overclock. However, even the same graphics card (GeForce 7800 GTX) can be overclocked differently when installed in different ASUS motherboards.

That's not all though. The Slow or Disabled option, which was supposed to disable PEG Link Mode, does not always work. There was virtually no way to disable PEG Link Mode for these cards.

For general users of ASUS motherboards, it is recommended that you set PEG Link Mode to Faster for improved performance. The slight overclocking of the graphics card will not affect its reliability although the performance benefits may not be readily apparent.

If you are already overclocking your graphics card, then PEG Link Mode will not have any effect on your PCI Express graphics card since you will be overclocking the core and memory above and beyond what PEG Link Mode does automatically.

If you are a hardware reviewer though, you must disable PEG Link Mode using the Slow or Disabled setting. Otherwise, your test results will not be accurate. However, please note that selecting the Disabled or Slow option does not necessarily disable PEG Link Mode. You need to verify that before running any benchmarks.

For more information on PEG Link Mode, please take a look at our ASUS PEG Link Mode Guide.


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