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| Consoles in the USA and Europe run at different speeds due to the different television standards used. The main differences between the NTSC and PAL PPUs is as follows:
| | #REDIRECT [[Cycle reference chart]] |
| {| border=1
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| ! Property || NTSC || PAL
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| |-
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| | Master clock speed || 21.477272 MHz ± 40 Hz<br>236.25 MHz / 11 by definition || 26601712 Hz ± ?<br>26601712.5 MHz by definition
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| | PPU clock speed || 21.477272 MHz / 4 || 26.601712 MHz / 5
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| | Corresponding CPU clock speed || 21.47MHz / 12 = 1.78977267 MHz<br>3 dots per CPU cycle || 26.601712 MHz /16 = 1.662607 MHz<br>3 1/5 dots per CPU cycle
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| | Height of picture || 240 scanlines || 240 scanlines
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| | Nominal visible picture height<br>(see [[Overscan]]) || 224 scanlines || 268 scanlines
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| | Length of VBLANK || 20 scanlines || 70 scanlines
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| | Total number of dots per frame || 341*261 + 340.5 = 89341.5<br>(scanline 261 is one dot shorter in every other frame) || 341*312 = 106392
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| | Vertical scan rate || 60.0988 Hz || 50.0070 Hz
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| |}
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| Other than these differences and color encoding, the NTSC and PAL PPUs function exactly the same.
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