Just fitted the cpu and memory, it's very easy to get to the cpu on the X58L, just remove the back cover section, and you can get to the memory, wireless card, cpu and heatsink, no other sections need to be removed.
Ever thing was fine, however I spotted one odd thing, the original memory fitted is actually 800mhz but is under clocked to 667mhz.
I started running Cinebench to test it and the multiplier was staying at x6 ie 1ghz even when just plugged in (ie no battery)
However a careful check, it's the power settings in vista, how
stupid is that, run the cpu at half speed at all times? even when plugged in and both cores are under 100% load.
no wonder this laptop was so sluggish.
Well I've going through the power settings to create a new sane profile, so speed step now works correctly when it's idle and low cpu usage, but kicks the speed back up when it's demanded.
The laptop is now far far nippier and much more responsive.
all told it's been a great success and for just £32 in the end.