Sep 15, 2019
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I recently got a used Gigabyte ga-990fxa-ud3 rev 4.0 and it’s the only new part of my build so I can verify all the other parts are working. I originally got one a few weeks ago and had the same issue so I sent it back thinking it was DOA. Now with the second one I’m wondering if it’s user error.

I tried breadboarding it and from bare bare bones mobo adding each part individually and testing. Without the 4+4pin in the ATX12V slot all the LEDs and Fans stay on consistently. Though when I plug in the 4+4 with either 4 or 8 connected nothing powers on at all, sometimes the LEDs and fans will flick on for a nanosecond but that’s only happens the first time when I unplug the PSU for a minute and then replug it.

Not really sure sure where to go from here please help.

Gigabyte ga-990fxa-ud3
AMD 9590fx
Asus GeForce RTX 2070 Super
Patriot Viper III DDR3 1600hz (2x8GB)
SilverStone 1500W Strider Gold S
 
Sep 15, 2019
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Sticker on the motherboard/box, information from the previous owner, or booting it up with a CPU known to work on the originally released BIOS.
I bought it off Amazon used and I haven’t been able to boot it up with any of my cpu 9590fx or 8350fx I don’t see a stick on the motherboard either
 
Sep 15, 2019
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It's quite possible. We're talking used motherboards on a platform that wasn't very dependable in the best of times. If the other parts are all truly verified to be working by equipment swaps, I don't have any idea what else it could be.
Do you know where I could get a new one or maybe a different one I can get new? I can’t find it new anywhere
 

DSzymborski

Glorious
Moderator
Do you know where I could get a new one or maybe a different one I can get new? I can’t find it new anywhere
It would be very hard to find, maybe on eBay if you're lucky. Problem is that this CPU came out at the tail-end of what was at the time an ancient platform and only a few motherboards could safely run a 220W CPU anyway. We usually counsel people to move on from an AM3+ build as they have to start shelling out money, because of this.
 
Sep 15, 2019
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It would be very hard to find, maybe on eBay if you're lucky. Problem is that this CPU came out at the tail-end of what was at the time an ancient platform and only a few motherboards could safely run a 220W CPU anyway. We usually counsel people to move on from an AM3+ build as they have to start shelling out money, because of this.
Would it be possible to just get a new mobo and cpu or is my whole system incompatible. And what for factor should I use for similar or better performance?
 

DSzymborski

Glorious
Moderator
Would it be possible to just get a new mobo and cpu or is my whole system incompatible. And what for factor should I use for similar or better performance?
Your GPU and PSU will work fine in a new platform. Pretty much any Ryzen will give you better performance; it's especially stark in gaming as even the Ryzen 2400G outperforms any AM3+ CPU in most games unless they're very highly threaded. It's a larger investment than a used 990FX motherboard, but it's a far better choice in the long run, I feel and I'd definitely consider it. No CPU has caused more headaches than these 220W AM3+ CPUs!
 
Sep 15, 2019
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Your GPU and PSU will work fine in a new platform. Pretty much any Ryzen will give you better performance; it's especially stark in gaming as even the Ryzen 2400G outperforms any AM3+ CPU in most games unless they're very highly threaded. It's a larger investment than a used 990FX motherboard, but it's a far better choice in the long run, I feel and I'd definitely consider it. No CPU has caused more headaches than these 220W AM3+ CPUs!
But then why does AM3+ have such higher core count and core clock speed?
 
Sep 15, 2019
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Your GPU and PSU will work fine in a new platform. Pretty much any Ryzen will give you better performance; it's especially stark in gaming as even the Ryzen 2400G outperforms any AM3+ CPU in most games unless they're very highly threaded. It's a larger investment than a used 990FX motherboard, but it's a far better choice in the long run, I feel and I'd definitely consider it. No CPU has caused more headaches than these 220W AM3+ CPUs!
What ryzen would you recommend for under $300?
 

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