starcraft 2 loading times

ok this is my rig:

i5 750 @ stock (dont get how to overclock it)

ati 4770 video card oc'd to 900/1000

kingston 2GB DDR3 1066 mhz ramhttp://www.anitec.ca/product/474048/kingston-ktl-tcm58-2g-ddr3-1066-pc3-8500-2gb-unbuffered-240-pin-dimm-ram-module-ktltcm582g

seagate 500 GB HDD 16 mb cache 7200 rpm 7200.12http://www.canadacomputers.com/product_info.php?cPath=15_210_212&item_id=021509

I had a 1 TB hard drive with 5900 rpm up until recently. I found that my starcraft 2 single/multiplayer loading times were really bad. So I upgraded to the hard drive above and I definitely find my single player loading times have improved. For some reason my multiplayer loading times is usually dead last out of all the players in the games Ive played using it so far. Does this mean the hard drive above blows or that everyone on SC2 is rocking an amazing SSD that I can't hope to match? Would this western digital caviar blue hard drive have been better instead?http://www.canadacomputers.com/product_info.php?cPath=15_210_212&item_id=010671Thanks for any help

for me im always loading last. Maybe the problem is the ram. It is some cheap ram

You could try using GameBooster. That should help you a little bit until you can get 2GB more of RAM.