NVIDIA Corporation 143Chapter 7Configuring Key ForceWare Graphics Driver FeaturesUnlike the “progressive scanning” method, where all the scan lines are updatedin each frame, interlaced scanning results in a higher frame rate but usuallycauses image flicker.Display Timing StandardsNote: If you want to use “standard” timings (such as DMT, GTF, CVT, and EDID)instead of “custom” or EIA‐861B timing parameters from the Mode & timinglist discussed in the previous section “Display Mode & Timing Parameters” onpage 140, follow these steps:1 Click the Timing standard list and select one of the display timing standardsdescribed in Table 7.2.2 Click Apply.Table 7.2 Display Timing StandardsDisplay TimingStandard DescriptionGeneral TimingFormula (GTF)GTF is an older but widely used timing standard. However, newer display areswitching to the CVT standard.Discrete MonitorTimings (DMT)DMT is a set of pre-defined VESA timings. VESA updates this standard everyyear. If DMT timing is available for a specific mode, the NVIDIA display drivernormally selects it instead of GTF.Coordinated VideoTimings (CVT) CVT became the VESA standard on March 2003. CVT supports higherresolutions better than other timing standards.Coordinated VideoTimings-ReducedBlanking (CVT-RB)CVT-RB improves on the CVT standard. CVT-RB offers reduced horizontal andvertical blanking periods and allows a lower pixel clock rate and higher framerates.EDID Timing EDID timing is the preferred timing standard defined by the display's EDIDvalue. EDID is a standard data structure that defines the display's modelnumber, timing, and other settings.Note: Manufacturer-defined EDIDs are available only on Plug-and-Play (PnP)-compatible displays.
