I'm upgrading my home's old computer with a gtx 1080. The thing is that computer(mobo : GA H61m-ds2 intel i5 2400) is having some sort of display problem like flickering and flashing and nothing changes after I tried switching few monitors. It's like crashing down after using few minutes. So I assume CPU problem?? Well that's why I'm trying to add a graphic card into it since it doesn't have any, and try using graphic card for display. Ok that's the story and now I found a gigabyte GTX windforce 1080 with 50% discount and I had ordered it. I think that if it doesn't solve or the rig is too old, I can still use the 1080 to future use, as it's still beast right? So I'm just asking if there's any issues that pairing i5 2400 with a gtx 1080? or will it harm the graphics card as it bottleneck so much? Do windforce gtx 1080 a good selection? And also the PSU, is it necessary to buy an expensive like around $80. I'm asking that much because it's my dad who paying and he's not going to pay more in buying these computer thing. For me I will probably change a newer mobo, cpu, ram and psu. Do you guys have any suggestion?