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8pin vs 4pin 12V connector

T

tuksonrider

Gawd
Joined
Sep 29, 2007
Messages
814
I know that the male 4pin connectors from a PSU can work in the female 8pin connectors on the motherboard, but what is the advantages does the 8pin have over using the 4pin?
 
But they both proved 12v, and the 4pin is compatible in an 8pin.

If the 8pin receptor needs more power than the 4pin can provide, why does the 4pin work at all in the 8pin receptor?
 
Electricity 101.

More current through fewer conductors create more resistance. More resistance results in lower voltages and high heat and I have seen some melted connectors from high resistance connectors.

Always use an 8-pin if you can (and the board accepts it.) And don't bother with an adapter. All you're doing is moving the resistance point from the motherboard to 4" up the cable.
 
jonnyGURU said:
Electricity 101.

More current through fewer conductors create more resistance. More resistance results in lower voltages and high heat and I have seen some melted connectors from high resistance connectors.

Always use an 8-pin if you can (and the board accepts it.) And don't bother with an adapter. All you're doing is moving the resistance point from the motherboard to 4" up the cable.
Click to expand...

100% truth

Jonny on the spot;)
 
4 pin is a 2x2
8 pin is a 2x4

the 8 pin just splits the load between the second 2 (2x '2' <-this one) into halves
i think :)
 
jonnyGURU said:
Electricity 101.

More current through fewer conductors create more resistance. More resistance results in lower voltages and high heat and I have seen some melted connectors from high resistance connectors.

Always use an 8-pin if you can (and the board accepts it.) And don't bother with an adapter. All you're doing is moving the resistance point from the motherboard to 4" up the cable.
Click to expand...

Now why couldn't you just answer me that on your own forums when I asked, jonny? :p
(I'm the one that asked about that $30 Ultra X-Connect PSU)

Thanks, that makes perfect sense.

The best 80% psu I could find with an 8pin connector is the Corsair VX450 @ $67 after rebate.

It's going into a my gf's new build, but I'm wanting to keep it as cheap as possible. So far, it'll be the MOST expensive part in the build (E2140, eVGA 7100 mb, 1GB ram).

Can you reccomend a quality 8pin 80% PSU for less than the Corsair VX450?
 
tuksonrider said:
Now why couldn't you just answer me that on your own forums when I asked, jonny? :p
(I'm the one that asked about that $30 Ultra X-Connect PSU)
Click to expand...

Probably got buried in the thread. Maybe if it was a new thread... dunno... I just don't have as much time as I used to.

tuksonrider said:
The best 80% psu I could find with an 8pin connector is the Corsair VX450 @ $67 after rebate.
Click to expand...

Makes sense. A lot of cheaper unit simply won't have the 8-pin because a board that needs an 8-pin is generally something that supports quad-core or dual-proc so something on the cheap won't handle that. Of course, a lot of the same boards also support Celerons, dual core, etc. but manufacturers don't want to take that chance.
 
Yeah... and I looked and looked.

Cool, seems I'll just have to cut back at the fast food joints for a week or so to save up a wee bit more.

My gf's the type that'll not upgrade for years, so I need something that won't go up in smoke down the line.

Thanks again all for the replies. :)
 
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