Quote: Originally Posted by bilzmale
Have rebuilt my PC today, new mobo, HDD, more RAM, powered sound card and Win 64 bit.
I picked up a s/hand PSU (Antec 650W) but it would not run. Gone back to old 500W PSU but it only has a 4 pin mobo connector instesd of 8.
Everything is now working but I need to upgrade the PSU. Is there any harm in running the 4 pin 12V for now? I will also add a new video card which may need power - how big a PSU should I buy? What brands are recommended.
I will update my system info.
The last couple of motherboards I have purchased have 8 pin 12V sockets, but they came with plugs that blocked four of the pins. I believe that was to make iteasy to know how to insert the 4 pin plug. That suggests that most CPUs don't really need the extra current. (I haven't seen specs on that.)
If your system is running reliably with the 4 pin connector, I suggest that you not worry about it. I built up a system a few months ago that had an 8 pin socket; it runs perfectly reliably with a 4 pin plug. (Decent Antec PSU.)
Of course, on the newer systems, I removed the plug and used my 8 pin power connector. Because I could. (And I overclock.)