Motherboard needs a 8-pin connector slot,my PSU only has one 4-pin

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caynecayne

Oct 17, 2018
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Okey,so I was thinking of buying a new PC,I saw an interesting offer on one of the sites I was browsing.
GPU 1060 3GB - Will try to change it to RX 580 4GB(8 pin PCIe,have that connector)
CPU i5-8400
RAM 8GB
And the motherboard AsRock LGA1151 H310M-HDV...Which has a 8-pin connector slot
I have an old PSU which I bought Chieftec I-Arena series GPC-500S that only has a 4-pin CPU connector.
Could I use this PSU or do I need to buy a new one? I have no intention to OC anything.
 
Solution
geofelt
The aux cpu power connector is intended to add power for pcie slots and for high powered processors and graphics cards.
The i5-8400 is relatively low power; ok there.
But, the change from the GTX1060 to a rx 580 is going to add some 75w to the system and I would expect the need for 8 pin motherboard power would increase.
The usual recommendation for a RX-580 based pc is 550w.
http://www.realhardtechx.com/index_archivos/Page362.htm
The danger is not that it might not work.
The danger is that a cheap psu like the one you have will fail under load and damage anything it is connected to.

Using a cheap psu can become very expensive.
Buy a good psu, tier 1/2, no more than 3.
https://linustechtips.com/main/topic/631048-psu-tier-list-updated/...
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geofelt

geofelt

Titan
Oct 9, 2006
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The aux cpu power connector is intended to add power for pcie slots and for high powered processors and graphics cards.
The i5-8400 is relatively low power; ok there.
But, the change from the GTX1060 to a rx 580 is going to add some 75w to the system and I would expect the need for 8 pin motherboard power would increase.
The usual recommendation for a RX-580 based pc is 550w.
http://www.realhardtechx.com/index_archivos/Page362.htm
The danger is not that it might not work.
The danger is that a cheap psu like the one you have will fail under load and damage anything it is connected to.

Using a cheap psu can become very expensive.
Buy a good psu, tier 1/2, no more than 3.
https://linustechtips.com/main/topic/631048-psu-tier-list-updated/
Seasonic is always good.
 
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