I have been reading about unlock the multipier on Athlon XP chips through pins shorting rather than bridge linking, does any one know if this will work on my chip : Serial number : 500101661972U ? Also does anyone know of a good and cheap (in that order) HSF for me? Thanks in advance!

If it's an XP Barton, you're outta luck...they are "super-locked" & there is no way to unlock them. If it's an XP Tbred, you "may" be able to unlock thru pin shorting. I've never tried this myself but was gonna experiment on an old Duron I have laying around. Here's a link that'll explain how & what pins to short. I think I'd short the socket, rather than the pins: http://www.ocinside.de/go_e.html?/html/workshop/pinmod/amd_pinmod.html As for a cheap HSF...I've had very good results with the CoolerMaster Aluminum w/copper base plate: http://www.zipzoomfly.com/jsp/ProductDetail.jsp?ProductCode=370659 Asus A7N8X-X 1800+ Tbred @ 1600mhz pathetic 8.0 x 200mhz 512mb PC3200 Soyo KT600 Dragon+ v2.0 2500+ Sempron @ 1838mhz 10.5 x 175mhz 768mb PC2700

Thanks Jam! I think it may be a barton, how would I find out?

If it's already installed & running, this will tell you: http://www.cpuid.com/cpuz.php Asus A7N8X-X 1800+ Tbred @ 1600mhz pathetic 8.0 x 200mhz 512mb PC3200 Soyo KT600 Dragon+ v2.0 2500+ Sempron @ 1838mhz 10.5 x 175mhz 768mb PC2700

I don't have it, but I will get it and let you know shortly. Thanks once again!

If it's not installed, just look at the model number: AXDA2800DKV3D = 2800+ Tbred AXDA2800DKV4D = 2800+ Barton Basically the difference is either the 3 or 4 before the letter "D". The number is for the size of L2 cache: 3 = 256KB (tbred) 4 = 512KB (barton) Asus A7N8X-X 2500+ Sempron @ 2100mhz 10.5 x 200mhz @ 1.80v 512mb PC3200 Ti4200/8X 128mb WDC 60GB

Hi Jam, I have checked and I believe I have a Barton. :-( It seems I am stuck with the 12.5X multiplier. Thanks for your help! Simon