Hello everyone, Need to replace GPU. Need your suggestions. PC is ~8years old & config is Intel core i5 760 MSI H55M-E33 1 * 4GB DDR3 1333MHz Transcend ASUS EAH5670 1GB - Replacing this Corsair CX400W A Repair shop suggesting of service it. Is it advisable? (I saw in another thread it is not advisable but wanted to know is it same for all the cases) Thank you in advance.