# Ideas for improving LCD speed

**URL:** <https://forum.clockworkpi.com/t/ideas-for-improving-lcd-speed/17159>\
**Category:** PicoCalc\
**Created:** [April 29, 2025, 4:21pm UTC](https://forum.clockworkpi.com/t/ideas-for-improving-lcd-speed/17159 "2025-04-29T16:21:07Z")\
**Posts on this page:** 1\
**Showing post:** 23

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**Author:** ![pkr](https://yyz1.discourse-cdn.com/flex029/user_avatar/forum.clockworkpi.com/pkr/32/6084_2.png) [@pkr](https://forum.clockworkpi.com/u/pkr)\
**Post date:** [May 6, 2025, 12:14pm UTC](https://forum.clockworkpi.com/t/ideas-for-improving-lcd-speed/17159/23 "2025-05-06T12:14:25Z")

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`spi_freq = clk_peri / (2 * clk_div)` where clk\_div is an integer \>= 1 and spi\_freq \<= requested spi speed. Therefore your 240MHz should’ve theoretically resulted in 40MHz with clk\_div=3. Setting 200MHz for your overclock should’ve given you your target spi clock value of 50MHz

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