I am upgrading my desktop computer, a Lenovo H50-55 series computer with an AMD A10-7800 APU with integrated graphics, I currently am in a bad situation due to wanting to install an old AMD Sapphire HD 7870 Dual-X which i had lying around from an old PC my older brother had and we took apart and salvaged components from, I digress. But my concern lies within the new power supply unit i need to get to run this graphics card efficiently without needing a new psu if i decide to scrap this computer and build a new custom PC. I am debating on whether or not a Corsair CX450 Modular PSU would work with the GPU and with the other components in the computer, the graphics card and the psu are the only things that I will have modified in this computer. And if the CX450 modular doesnt work, will a Corsair CX500 non-modular work with the computer? Thank you for any replies! I am also looking into to EVGA 500w PSU, sorry for the multiple choices i have here, my main concerns are price and availability and the PSU fitting the GPU cables and fitting my case.