# Is CLR really 100 times slower than Win32

**URL:** <https://forum.kirupa.com/t/is-clr-really-100-times-slower-than-win32/222793>\
**Category:** talk\
**Created:** [April 17, 2007, 12:46am UTC](https://forum.kirupa.com/t/is-clr-really-100-times-slower-than-win32/222793 "2007-04-17T00:46:49Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![Al6200](https://avatars.discourse-cdn.com/v4/letter/a/f19dbf/32.png) [@Al6200](https://forum.kirupa.com/u/Al6200)\
**Post date:** [April 17, 2007, 12:46am UTC](https://forum.kirupa.com/t/is-clr-really-100-times-slower-than-win32/222793/1 "2007-04-17T00:46:49Z")

</div>

I’ve run 2 rather similar codes, one using unmanaged DirectX in C++, and another doing roughly the same thing using managed DirectX in C#. The one in C++ runs quite smoothly, with no hiccups or slowdowns whatsoever, however the one written in managed DirectX was only able to update the screen every second or two.

Since the C# code was written by me, and the C++ code was pulled from the internets, one could attribute the performance difference to my poor coding skills, yet that one would be a n00b. :?):?):?):?)…

…Or Santa Clause

:shifty: