Custom Resolution Utility (CRU) Safe Timings & Pixel Clock Calculator

Q: Why should I use CVT-RB2 instead of Standard Timings in CRU?

CVT-RB2 cuts unnecessary blanking intervals originally meant for CRT monitors, lowering total Pixel Clock by 15-20% and freeing cable bandwidth.

Q: Can custom resolutions in CRU damage my monitor?

No. Modern LCD and OLED monitors feature internal firmware scalers that simply reject out-of-range frequencies without permanent damage.

Calculate exact CVT-RB and CVT-RB2 blanking intervals and pixel clock rates before applying custom stretched resolutions or monitor overclocks in CRU. Prevent "Out of Range" black screens.

Horizontal Width (px)

Vertical Height (px)

Refresh Rate (Hz)Monitor overclock target

Display Interface CablePhysical port bandwidth

Calculated Pixel Clock & Bandwidth

CVT-RB2 (Reduced Blanking v2) Timing Standard

Within Safe Cable Limits

Pixel Clock320.26 MHzMaximum for cable: 1080 MHz

Uncompressed Data Throughput7.69 Gbps8-bit RGB color depth

Cable Bandwidth Saturation29.7%Of 25.92 Gbps max

CRU Exact Parameters to Enter

Horizontal Total2000

Vertical Total1112

H Blanking80 lines

V Blanking32 lines

Emergency Recovery: What if your screen goes black after clicking restart64.exe?

1. Do not panic: Windows has a built-in 15-second safety revert timer. If the screen does not come back automatically, press Esc or Enter.

2. Instant Shortcut Reset: Press Win + Ctrl + Shift + B to force-restart the Windows Graphics Driver pipeline.

3. CRU Hard Reset: Boot into Windows Safe Mode, navigate to your CRU folder, and run reset-all.exe. This restores your GPU display EDID overrides back to factory default.

Frequently Asked Questions

Why should I use CVT-RB2 instead of Standard Timings in CRU?

Standard (CEA-861) timings allocate large blanking intervals originally designed for CRT electron gun resets. CVT-RB2 (Reduced Blanking v2) drastically cuts unnecessary blanking lines, reducing the total Pixel Clock by 15-20% and allowing higher refresh rate overclocks across the same cable.

Can custom resolutions in CRU damage my monitor?

Modern LCD/OLED monitors feature internal scalers and firmware protection that will simply display "Out of Range" or shut off display output if timings are unsupported. Permanent hardware damage does not occur from setting custom resolutions via CRU.