Common pixel clock limits

DVI

LinksLimitData rateBandwidth
Single165 MHz3.96 Gbps4.95 Gbps
Dual330 MHz*7.92 Gbps9.9 Gbps

* Technically no limit defined by the DVI specification, but often limited to 330 MHz.

HDMI

VersionLimitData rateBandwidth
1.0-1.2a165 MHz3.96 Gbps4.95 Gbps
1.3-1.4b340 MHz*8.16 Gbps10.2 Gbps
2.0-2.0b600 MHz14.4 Gbps18 Gbps

* AMD GPUs without HDMI 2.0 are limited to 297 MHz.

DisplayPort

DisplayPort limits depend on the number of lanes and the link rate:

  • Reduced Bit Rate (RBR) and High Bit Rate (HBR) are supported by all versions of DisplayPort.
  • High Bit Rate 2 (HBR2) is supported by DisplayPort 1.2 and newer.
  • High Bit Rate 3 (HBR3) is supported by DisplayPort 1.3 and newer.

4 lanes

Link rate8 bpc limit6 bpc limitData rateBandwidth
162 MHz (RBR)216 MHz288 MHz5.184 Gbps6.48 Gbps
270 MHz (HBR)360 MHz480 MHz8.64 Gbps10.8 Gbps
540 MHz (HBR2)720 MHz*960 MHz*17.28 Gbps21.6 Gbps
810 MHz (HBR3)1080 MHz1440 MHz25.92 Gbps32.4 Gbps

* NVIDIA Kepler GPUs are limited to 540 MHz.

2 lanes

Link rate8 bpc limit6 bpc limitData rateBandwidth
162 MHz (RBR)108 MHz144 MHz2.592 Gbps3.24 Gbps
270 MHz (HBR)180 MHz240 MHz4.32 Gbps5.4 Gbps
540 MHz (HBR2)360 MHz480 MHz8.64 Gbps10.8 Gbps
810 MHz (HBR3)540 MHz720 MHz12.96 Gbps16.2 Gbps

1 lane

Link rate8 bpc limit6 bpc limitData rateBandwidth
162 MHz (RBR)54 MHz72 MHz1.296 Gbps1.62 Gbps
270 MHz (HBR)90 MHz120 MHz2.16 Gbps2.7 Gbps
540 MHz (HBR2)180 MHz240 MHz4.32 Gbps5.4 Gbps
810 MHz (HBR3)270 MHz360 MHz6.48 Gbps8.1 Gbps

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