Mobo/CPU compatibility?

[kaos kid]

I have an older Shuttle box with an FS-51v2 mobo. According to Shuttles' spec page on this box, it supports up to 3.06Ghz/533/512 socket 478 P4 Northwood cpus. In looking up the specs on Intel's processor finder page, I see that there is also a Mobile Pentium 4 cpu with the same specs available, but with a 1.3 VID voltage range instead of the normal p4's 1.55 VID voltage range. Since it is listed as a .13 micron, I assume it is also a Northwood core. My question is:
Would the mobile P4 processor also work in the Shuttle box? The reason I'm asking is that I assume the mobile P4 would be more stable in a small box like the Shuttle since it is designed to work in a hotter environment (ie a laptop) but I don't want to try it myself if the mobo and mobile chip wouldn't be compatible (it is my kids' box and as far as I know the maximum upgrade available).

If anyone has had experience with P4 mobile chips in P4 desktops, please respond with relevant input.

Thanks!

 

[faxon]

my question is how much are you paying for this? cause cpu/mobo/ram can be had for about $100 these days for the lowest end models of everything with 2gb of DDR2. just some food for thought

 

[kaos kid]

Actually, I only paid $50 for the whole setup. A lady I met had a relative that got the barebones kit from shuttle and added the rest (years ago). I originally bought it from her to use as a PVR/DVP media box, but when playing HD matroska files cpu usage jumped to 100% and I got sketchy playback. I was told that if I could find the 3.06ghz chip with hyperthreading that it may work better for that usage along with my X1650 Graphics card (mobo has only 4x AGP slot, boohoo). I'm just letting the kids use it now until a strong-enough mini-itx board/cpu comes along that will fit in the case and my budget. I like the case because it is so small and looks good in my EC, that is why I'm trying to find a way to use it as is. Finding a 7.5"w x 9.5"deep mobo to fit it has been harder than I thought. Still, even though it didn't work out for me, it works fine for my kids so if I can find the right CPU and it still won't serve my purposes, then it would at least be perfect for them to use.