Recently a friend wanted to know if it was possible to play SC2 smoothly at 1080p with a 250$ budget (regardless of graphics quality). The answer as it turns out is YES!
To give you some background information SC2 is terribly flawed by design as unlike most games it requires loads and loads of CPU power while being a breeze on most GPUs most builders would associate with adequate CPUs. To make matters worse, it can only use 2 cores! You could have the beefiest AMD quad crossfire setup with a 1100T @ 4ghz+ and the 2core bottleneck could bring the fps down to single digits.
Sandy bridge is pretty much the only logical way to go for an SC2 gamer. Most of whom use either the G620, 2100 or 2500k...but now there is a new even cheaper kid on the block, the G530. And as far as GPUs go, bankrupt players at low graphics or resolution can do fine with a GT430 and very rarely do SC2 optimized builds go past GTX460s as even the SE version can do 1080p with eye candy just as well as SLI/xfire...
So here is the build (note that the PSU is of very low quality but will be enough to power the rig, doubt someone who is on such a tight budget would care much if the PSU died within a year or two anyways...same with the 100GB notebook HDrive to hold SC2 OS and just a few other things):
CPU:
Sandy Bridge Celeron 2.4GHz @ 49$ NCIX pricematch
MOBO:
MSI H61 mATX @ 42$ after MIR
HDD:
Seagate Momentus 7200RPM 100GB @ 25$ NCIX pricematch
NCIX shipping: 7$
RAM:
Mushkin Enhanced Silverline Stiletto 2X2GB @ 24$
Case+PSU:
Logisys CS-51WBK + 480W PSU @ 35$
since over 50$ from directcanada.com, shipping is free!
GPU:
Sapphire 5670 @ 42$ after MIR and COLLEGETOUR11 promo code
Newegg shipping: 7$
Total: 231$+tax after MIR (30$)/shipping(14$)