# CPU Swap

**URL:** <https://forum.kirupa.com/t/cpu-swap/183338>\
**Category:** random\
**Created:** [March 26, 2006, 12:02am UTC](https://forum.kirupa.com/t/cpu-swap/183338 "2006-03-26T00:02:00Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![Maxtr0sity](https://avatars.discourse-cdn.com/v4/letter/m/a88e57/32.png) [@Maxtr0sity](https://forum.kirupa.com/u/Maxtr0sity)\
**Post date:** [March 26, 2006, 12:02am UTC](https://forum.kirupa.com/t/cpu-swap/183338/1 "2006-03-26T00:02:00Z")

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I currently have a Pentium M (745) 1.8Ghz 400Mhz FSB CPU on the PM855 mobo. I have an ‘option’ right now to swap it for a 1.86Ghz 533Mhz FSB (750). Is it going to work? Is the FSB gain worthit?

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**Author:** ![Templarian](https://yyz1.discourse-cdn.com/flex011/user_avatar/forum.kirupa.com/templarian/32/7152_2.png) [@Templarian](https://forum.kirupa.com/u/Templarian)\
**Post date:** [March 26, 2006, 2:35am UTC](https://forum.kirupa.com/t/cpu-swap/183338/2 "2006-03-26T02:35:53Z")

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^If both have the same amount of pins then they will usually work. Any gain is worth it even though thats not a whole lot of change.

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**Author:** ![Maxtr0sity](https://avatars.discourse-cdn.com/v4/letter/m/a88e57/32.png) [@Maxtr0sity](https://forum.kirupa.com/u/Maxtr0sity)\
**Post date:** [March 26, 2006, 2:39am UTC](https://forum.kirupa.com/t/cpu-swap/183338/3 "2006-03-26T02:39:15Z")

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I’m not sure if they do have the same number of pins. Since my mobo only supports up to 400Mhz, will a 533 just be clocke down automatically?

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**Author:** ![teet](https://avatars.discourse-cdn.com/v4/letter/t/c37758/32.png) [@teet](https://forum.kirupa.com/u/teet)\
**Post date:** [March 26, 2006, 6:14am UTC](https://forum.kirupa.com/t/cpu-swap/183338/4 "2006-03-26T06:14:49Z")

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> I’m not sure if they do have the same number of pins. Since my mobo only supports up to 400Mhz, will a 533 just be clocke down automatically?

I’m really not sure, but you would only be gaining 60 mhz…hardly noticeable. I remember when the first generation P4’s were first coming out. It was honestly hard to notice any difference between a 1.4, 1.6, or 1.8 ghz processor.

Is this a free swap?

-teet

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**Author:** ![Oli\_G](https://avatars.discourse-cdn.com/v4/letter/o/f05b48/32.png) [@Oli\_G](https://forum.kirupa.com/u/Oli_G)\
**Post date:** [March 26, 2006, 6:24am UTC](https://forum.kirupa.com/t/cpu-swap/183338/5 "2006-03-26T06:24:18Z")

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Yep… i’m pretty sure it just gets clocked down.

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**Author:** ![Maxtr0sity](https://avatars.discourse-cdn.com/v4/letter/m/a88e57/32.png) [@Maxtr0sity](https://forum.kirupa.com/u/Maxtr0sity)\
**Post date:** [March 26, 2006, 4:57pm UTC](https://forum.kirupa.com/t/cpu-swap/183338/6 "2006-03-26T16:57:34Z")

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Yeah, free swap. Will my CPU work on that mobo then? In other words, can that mobo run a slower clock w/ slower FSB?