GPU's Won't Work in Motherboard... At My Wit's End...

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GunXpatriot

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Jun 29, 2014
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So I just got a new motherboard, and everything seems to work fine. That is, with my old HD5450 GPU...

This mobo is an LGA775 socket with a core 2 duo e8400. I got a good deal on it and it was perfectly fine for it's intended use. Which is cryptocurrency mining.

So I bought an R9 285 and thought it was dead. It wasn't. I popped it into my main rig. It worked fine. I took my 2 R9 270's out of my main rig and put them into the new mobo. Nothing. No post, or beeps or anything. Take them out, put the HD5450 in, works fine 100%.

I did also try one of each gpu in each of the two X16 slots alone with only one gpu in at a time. Same issue. I thought maybe it was an issue of not being seated properly because there is a bit of obstruction, but this doesn't seem to be the issue... Of course, this HD5450 w/ E8400 could be a fine machine, but for my intended purpose, it was a waste of money... Why would that GPU work, but not any of the others? I just can't figure it out... I really hope someone can help me out. Thanks!
 
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re: ".... I got a good deal on it and it was perfectly fine for it's intended use. Which is cryptocurrency mining. ... "

They change how hard it is to find cryptocurrency as hardware gets stronger.

CPU mining died fast when GPUs were so much faster and they changed the diffulty of finding anythign with a CPU to be so hard that the power used cost more than the coins found.

The GPU mining got hit when FPGAs and mining ASICs appeared. GPUs now couldn't keep up. And forget CPUs.

If you got this system to mine using either CPU or GPU, good luck. ". I got a good deal on it and it was perfectly fine for it's intended use. Which is cryptocurrency mining. ..."
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CBender

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Dec 30, 2015
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That gpu 5450 puts a very low load on your system. So what type is you psu on that system? Could you try the new mobo with the psu from your main system? Either the psu can't handle the load or the pci slot on your board can't deliver the needed juice too. I'd start with switching the psu and go from there.
 
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GunXpatriot

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Well I know all these more powerful GPU's work. The R9 285 and both R9 270's do work, and they all show indication of power, and all spin up in the LGA775 mobo but again, nothing happens on screen.

Also, there appears to be a molex slot on the motherboard near the pcie slots, which as far as I know, is to provide extra power to the mobo for pcie devices. I think?

Even with that molex connector plugged in, it still doesn't seem to work. And wouldn't an HD5450, being powered only from motherboard, pull more than a 6-pin gpu anyway? I mean, I would think that most of the gpu power would come from the 6-pin connector, and R9 270's only run like 150 watts at load. I think the HD5450 at load runs something like 30+ watts directly from the motherboard...

I did read another post about perhaps the board not being able to recognize a GPU with more than x-amount of vram. Could my HD5450's 1GB be this board's max? I know this board is old, but I would think it could handle the 2GB cards I'm feeding it...
 
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Max843

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I have a Asus Rog Maximus VIII Hero Alpha, and I purchased Sapphire Radeo Nitro r9 390. I couldn't get it to work at all, so I shipped it back to Amazon, I get a new one the same, put it in the first slot, and I could not get it to seat properly, I looked down and noticed some gold showing, it just would not seat all the way, plus neither of these, would line up with my chassis screw holes. I got tired of it, sent it back to Amazon, got my refund, went to Fry's and purchsed a EVGA Geforce GTX 970, this card works fine, no issues at all. However I did get a Q-Code 99, which turned out to be a bad HDMI cable that I purchased from Fry's.
 
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GunXpatriot

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Jun 29, 2014
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It's funny you mention a bad HDMI cable... The one I was using yesterday had a weird issue. It worked in the HD5450 in either system. But would not work on the R9 285 nor the 270's... Used DVI, everything worked. Changed hdmi cable, everything now worked... Not fixing the problem I had, but I can't imagine why the cable would work in one setup, and not two others, no matter how garbage the cable is... It's a 6 foot cable afterall... Weird. :/

I really am starting to consider a new motherboard. Something newer altogether. I so have a Sempron 145 lying around, maybe I can grab a cheap AM3 motherboard and some RAM.... I bet something would work. At least, better than things are working right now.
 
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tsnor

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Nov 20, 2008
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re: ".... I got a good deal on it and it was perfectly fine for it's intended use. Which is cryptocurrency mining. ... "

They change how hard it is to find cryptocurrency as hardware gets stronger.

CPU mining died fast when GPUs were so much faster and they changed the diffulty of finding anythign with a CPU to be so hard that the power used cost more than the coins found.

The GPU mining got hit when FPGAs and mining ASICs appeared. GPUs now couldn't keep up. And forget CPUs.

If you got this system to mine using either CPU or GPU, good luck. ". I got a good deal on it and it was perfectly fine for it's intended use. Which is cryptocurrency mining. ..."
 
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