cpu:PhenomⅡ-X4-965主機板:技嘉 GA-770TA-UD3記憶體:創見JETRAM-2GB-1333光碟機:華碩DRW-24B1ST(黑硬碟:WDWD5000AAKS供電器:CorsairVX550W機殼:cm 690顯示卡還在考慮是要微星r4890螳螂扇1g或是r4870螳螂扇1g兩張價錢大概多少效能差很多嗎請大大幫忙選