Purchased 7900xtx – Compatibility with RM750x PSU?
Purchased 7900xtx – Compatibility with RM750x PSU?
Hi there, Connor. Here’s a quick summary of your situation: You bought a 5-year-old PC and are planning upgrades—specifically a CPU (7900XTX) and a Ryzen 5 5700X3D. You’re asking if the RM750X will work for this build and whether you need to manage those 3x8 pin cables since you only have one sleeved cable branching into multiple cables. Thanks for reaching out, and feel free to ask more details!
7900XTX reaches its maximum around 365W, meaning OCed probably won’t exceed 400W. Your CPU and the rest of the system won’t hit 350W unless you use extra fans or something similar. Looks good overall. Consider getting new cables—Corsair should have replacements, and Cablemod offers aftermarket options in various colors.
It's likely your power supply had additional connectors, just what you needed for three plugs.
The 8-pin PCIe and 6+2-pin PCIe cables are identical, just omitting two pins for GPUs that accept a single 6 or 8+6 connection. An 8-pin EPS is another type but won’t fit unless you have significant force (since they’re keyed differently). You should be comfortable using the dual 6+2 cable you already have plus an additional 8-pin one.
I wouldn't suggest purchasing an unnamed brand's cheap cable for any GPU, particularly one that costs a lot. Opt for a replacement from Corsair directly or from a trusted aftermarket supplier. Corsair offers various cables tailored to different PSU generations, so the general "for Corsair" message doesn't give me confidence.