I've been avoiding Intel since AMD had the K6-2 CPU. More of bang for the buck.
Yeah, any review sites will show Intel performing better in benchmarks than AMD-equivalent systems but when I view it between price-to-performance ratio, AMD is my choice.
Intel branding is very strong, somewhat in-grained, so naturally Branded Computers used Intel but some are now using AMD as consumers nowadays are more conscious on budget.
GPU - Graphics Processing Unit, the brains of the graphics card.
The integrated processors will be launched end 2010, maybe. No need to buy parts at IT shows, might be a tad cheaper but by not much. To me going to Sim Lim Square any day of the week is ok, price is reasonable as the competition is stiff between shops.
I have 3 desktops and 2 Laptops at home. My gaming rig uses water-cooling as I've overclock my CPU. Tried Windows 7 RC 32bit on my netbook, not bad, but reverse back to XP due to minor driver glitches.
About your PC, u can do this Start>Run, type CMD, type chkdsk c: /f /r , press enter, restart PC.
At boot your hardisk will be throughly check and repaired for cross-linked files and corrupted data. These problems usually slowdown a computer. Do note this process can take from 30mins to a few hours. Do bare with it.
Next delete IE temp internet files to free up hardrive space.
Next do a defrag, can download the freeware here.
You can also download trial Antivirus Software like NOD32 to check your PC.
Basically these steps I do routinely every few days to not more than a week. Also do backup your data...often. I wouldn't want to lose 5 terabytes of data.