I posted a thread in OS a while back about my CPU usage being stuck around the 50% mark. I took it to a comp technician(friend so free diagnosis) and he said it was definitely the mobo, but alas he could not fix it. Apparently it's having some problems with the IRQ's and is hogging up a lot of CPU power with interrupt requests. Now, either I need to know how to fix this, or I could get a new mobo. If the latter, any sugguestions? Specs are as follows; ASPIRE 500-W PSU. Sapphire ATI Radeon X850XT 256mb PCI-E ASUS A8N-SLI Premium Seagate 300gb 16mb cache SATA HDD AMD Athlon 3200+ 2.0GHz EDIT : it's socket 939 to clarify. About a $250 CDN budget.