Will I melt my PCI-E Slots?

koreanoverlord · Jan 3, 2014

Hello, I have added a 5770 to my system and will have it dedicated to Scrypt mining. I heard that if you run multiple cards under a motherboard that does not feature a plug for additional power that you can melt your PCI slots.

Also, would you say a CX 750M will be sufficient for a 5770 + a 290X? I'm running it right now and it doesn't appear to be having any isssues... however this system will be ran 24/7 mining when not gaming.

Sorry for being a noob, I have never had more than one GPU in a system before.

InvalidError · Jan 3, 2014

The 5770 is ~100W peak, the 290X is ~330W, the rest of your system is likely less than 150W so your system should be under 600W worst-case. Actual power probably is under 500W.

koreanoverlord · Jan 3, 2014

InvalidError :

What about my PCI slots then? Will they be okay under stress 24/7?

InvalidError · Jan 3, 2014

koreanoverlord :

GPUs get most of their power from the auxiliary PCIe power connectors so this should not be a major issue.

koreanoverlord · Jan 3, 2014

Okay my PC just shut down and would not cycle power for about 2 minutes. Would this be the PSU overheating?

InvalidError · Jan 3, 2014

koreanoverlord :

Check that the PSU's intake and exhaust aren't clogged, that its fan is spinning properly and that its exhaust is not unreasonably warm. If everything seems fine, your problem is probably elsewhere.

At first I was thinking individual 12V rail overload but the CX750 is a single-rail design so that isn't it.

It would be useful to have more details about exactly what was going on in the seconds before it shutdown.

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Will I melt my PCI-E Slots?

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