Using an Older Power Supply on a New Motherboard

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David Fionda

Honorable
Mar 29, 2013
3
0
10,510
Hello

The motherboard in my PC finally died. I purchased a Gigabyte 78LMT-USB3 and a AMD 4100 FCX CU for it.

My computer has an older Antec 450W power supply. The motherboard has an 8 pin connector on it. My power supply has a 4 pin and a 6 pin PCI connector. I do not have a separate graphics card and wont overclock the CPU.

The motherboard specs say that the 8 pin connector is an ATX 12V ( it doesnt say eps)

My question is this should I:

1.) Plug the 4 pin connector into the 8 pin on the motherboard
2.) Purchase a 4 pin to 8 pin Roswill adapter

I looked up power supplies and they all seem to come with the 6 plus 2 connector, including this power supply, Thermaltake TR2 TR-500 500W ATX12V v2.3 SLI Ready CrossFire Ready Power Supply which tiger direct includes in a bundle for this motherboard.

Thanks in advance for the help!

Dave
 
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Onus

Onus

Titan
Jan 27, 2006
37,037
12
89,965
You should be able to plug the four-pin into four of the eight pins (one side or the other, not the middle four). Do NOT try to plug a 6+2 pin plug into the mobo power connector; it shouldn't fit, but might be able to be forced, so DON'T; that's a graphics card power connector and is wired differently.
The Thermaltake TR2, if the older version (I'm sure it is, with a little voltage switch on it), is NOT a good PSU. Consider it good for no more than ~430W.
 
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mouse24

mouse24

Splendid
Nov 30, 2010
4,389
0
23,960
Agreed with everyone else, use a 4 to 8 pin converter, or just plug in your 4pin and hope it works. as Onus said don't use a 6+2, and I think it might fit IF you put it in upside down. I had a user do this a while back, not pretty. Fried his board. (12v going into grnd)

Regardless of what wizardry he used to get it in there.... Just... no...
 
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