Spec kompi ane : Intel i5-2400 Gigabyte GA-H77-DS3H RAM Kingstone 8GB (4x2GB) HDD 2 biji 500GB LG 22" LED 22EN43V-B PSU FSP RAIDER 550W VGA HIS HD 6570 ICEQ ane pengen upgrade VGA ke HIS HD 7770 ICEQ kira-kira masih aman ngak ya buat kedepan....atau ane upgrade PSU juga kah?