The new CPU demands a different power supply unit.
The new CPU demands a different power supply unit.
I noticed the Asus Prime X670-P features two CPU power connectors—8-pin and 4-pin. It seems my motherboard only supports the 8-pin type now. My power supply also appears to be limited to 8-pin. Should we really upgrade our power supplies just yet? Considering the Cooler Master V750 (750W) option.
You have an X670E-PLUS from Asus TUF, connected with only one of the two 8 PIN CPU cables, and it functions perfectly. The additional 4 pin cable serves extra power for the CPU during overclocking attempts, but if you don’t intend to use that feature, sticking with just one cable is perfectly acceptable.
It seems everything should be okay as long as the components aren’t too demanding. I mentioned having two 8-pin CPU headers on the motherboard, and even with just one connected, it performs well and stays stable.
Your PSU model shows: CPU 4+4 x2, which is a 2x4 pin configuration, also known as an 8-pin connector. That’s the type used in that setup.
non-problem in all likelihood. It's probably more of a "feature" for EXTREMEEMEME OVERCLOCKERS!!!1! A single EPS connector can do 300W which is more than the socket is rated for and more than a modestly overclocked 7950x would draw. I wouldn't be surprised (have not verified) if a single EPS connector + the 24 pin connector can push 300-500W. Which is absurd. If you ever upgrade to a (hypothetical, unrelease and unannounced) 32 or 64 core AM5 CPU you might want a new PSU. Overclocking hasn't really mattered for most people for years now (10 years ago it was +20-50% performance for free, now it's +2-5% performance and it doubles your energy costs) since both AMD and Intel push parts much closer to their limit and differentiate on core count and/or cache instead of clock speed. Here's a related discussion: https://www.reddit.com/r/AMDHelp/comment...therboard/ It looks like in some instances the manuals say "8+4 OR 8 only is fine" Another discussion: https://www.techpowerup.com/forums/threa...ow.299330/
You're using an 8-pin CPU, possibly a 7800X3D or 7700X. Those are classic choices for retro gaming setups!
The 7800X3D supports up to 162W of PPT. The EPS connector provides 300W, and the remaining 24-pin PSU connector also supplies power. You likely have more than enough capacity for the required power. As a note, Zen 5 is expected soon. Avoid over-investing in future-proofing unless it has clear short- to medium-term applications. Upgrades are always possible later.
It wouldn't surprise me if the EPS connector performs well beyond 500W. There are users pushing overclocking X58 on boards with just one 8-pin connector, suggesting the connector could easily handle more than 500W. If it weren’t capable, melting the EPS cable would be a real issue, since cable ratings are kept conservative to protect even the weakest PSUs using thin wires. Thicker cables can safely exceed these limits without problems.