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Can a 4 years old motherboard with AMD X2 CPU accepts a GTX 750 ti graphic card ?

Last response: in Motherboards
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April 13, 2014 8:44:46 AM

Hello there :) 

I have purchased a graphic card (MSI GTX 750 ti, pci-e 3.0), that i want to install on my motherboard (Gigabyte ga-ma785gmt-ud2h rev 1.1), the PC is starting (no beep sounds, etc.), but I don’t have any image. So i was wondering if a 4 years old motherboard (generation Athlon X2) can accept graphic cards this recent.

A few more details (that i've already given in another thread on the display forum):

PCI Express slot
- I’ve thought it was an issue with the pci express port, but when i’ve installed another graphic card, it was working.
- The GTX is rather long and SATA cables are hindering a bit its insertion. But with a bit of pressure, the pci-e slot switch activates and it seems the card is well plugged in the slot (a part of the card is stuck to the southbridge heatsink)

Power supply
- For the power supply, it was taken from a HP computer, 300 watts. Perhaps the issue comes from this? The GTX 750 ti is known for its low consumption (around 60/75w, a model without pci connector from the PSU so all the power is derived from the pci-e slot) but it’s still 30 or 40w more than the other graphic card I’ve mentioned that is working (30w). Nonetheless, the fans of the GTX 750 ti are functioning, so it may means that the card is under tension?
- Still on the PSU, my motherboard has a 8 pin CPU connector while my PSU has a 4 pin one. Perhaps it’s related? (not enough power and stability delivered to the motherboard?)

BIOS
- My motherboard bios version is the F10 Beta, perhaps I should return to the F9 version?
- Perhaps there’s an option to set in the bios as well?
- Maybe an issue with pci-e 3.0 cards (as the motherboard is pci-e 2.0)?

The graphic card
- It’s brand new, well protected in its package during the shipment, and no sign of burns or damage on it.

Thanks in advance for your help :) 
April 13, 2014 8:49:37 AM

Your PSU definitely seems like the issue. It is possible for the GPU to run on a GOOD 300W PSU, however a generic one won't work. I would upgrade at least to a 400 to be safe, and from a reputable brand.

The PSU also needs 20 amps on the 12v rail to run the 750.

As for the 4 pin issue, you're fine. That only effects the CPU (the 24V supplies the rest of the MB). People use 4 pins on 8 core processors, it's just overclocking that can run into issues. PCI-E 3.0 is compatible with 2.0 slots.
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April 13, 2014 9:08:37 AM

I considered the same graphics card at some point and was told by various online stores here in my country that you need at least a 500-550W PSU.
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Related resources
a c 131 V Motherboard
a c 119 U Graphics card
April 13, 2014 9:52:45 AM

Replace the PSU for your own good. Its dangerous to use 4 pin connector on a 8 pin CPU connector MB. PSU is not delivering enough power to the MB to run efficiently. Either your MB will got damaged or the PSU.

GTX 750ti is a 60W card on max load, so any decent 450-500W PSU can handle it. Remove the CMOS battery for 15 minutes, then put it back in, start the PC with the GPU, see if that changes anything !

All SATA/USB/PCI-E are backward and forward compatible, so don't worry about that.

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April 13, 2014 10:16:18 AM


Thanks for your answers guys :) 

But would the computer starts and the GTX fans rotate, if the PSU wasn't sufficient? I thought that if a PSU was too weak, the computer would simply not start, i am wrong?

Someone on another forum is also suggesting me that there me an issue of compatibility with the motherboard due to its age, do you think that could be the case ? The motherboard is pci-e 2.0 and "only" 4/5 years old, i would find it weird that it won't accept a graphic card because of that.
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April 13, 2014 10:17:55 AM

lonewolf7 said:
Replace the PSU for your own good. Its dangerous to use 4 pin connector on a 8 pin CPU connector MB. PSU is not delivering enough power to the MB to run efficiently. Either your MB will got damaged or the PSU.

GTX 750ti is a 60W card on max load, so any decent 450-500W PSU can handle it. Remove the CMOS battery for 15 minutes, then put it back in, start the PC with the GPU, see if that changes anything !

All SATA/USB/PCI-E are backward and forward compatible, so don't worry about that.



Thanks for your answer. For the CMOS procedure, do you advise me to do it now, before purchasing a new PSU? And i will lose my BIOS preferences, is that it? The BIOS version will remain the same?
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a c 131 V Motherboard
a c 119 U Graphics card
April 13, 2014 10:52:51 AM

Why did you selected the "Pick as the Solution" ? Problem solved ? Don't select that button until you got the solution.

Anyways, its not the question of PC starting or not, what I meant, a underpowered PSU will damage the components. And that GPU is a pretty less power consuming GPU, so as I mentioned earlier any decent PSU can handle the card.

You may have to tweak the BIOS to be able to get the display or something else, but a 4/5 year old MB has nothing to do with not running the card properly, and nor the PCI-E version.

Yes you can do the CMOS procedure now, no harm in it. It will just reset the BIOS to its default values, nothing else. Yes the BIOS version will remain the same. And get a decent PSU ASAP like XFX 550W Pro, Corsair TX, HX, series or Seasonic.
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April 13, 2014 2:11:15 PM

i've accidentally hit a "consider this answer as a solution" button while i wanted to post an answer, so this thread is considered as solved whereas it's far from the case, if you have advice, i'm all hear :) 
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April 13, 2014 2:13:48 PM

lonewolf7 said:
Why did you selected the "Pick as the Solution" ? Problem solved ? Don't select that button until you got the solution.

Anyways, its not the question of PC starting or not, what I meant, a underpowered PSU will damage the components. And that GPU is a pretty less power consuming GPU, so as I mentioned earlier any decent PSU can handle the card.

You may have to tweak the BIOS to be able to get the display or something else, but a 4/5 year old MB has nothing to do with not running the card properly, and nor the PCI-E version.

Yes you can do the CMOS procedure now, no harm in it. It will just reset the BIOS to its default values, nothing else. Yes the BIOS version will remain the same. And get a decent PSU ASAP like XFX 550W Pro, Corsair TX, HX, series or Seasonic.


yes i wanted to answer you, my mind saw a big green button and thought it was the reply one whereas it was the "considered this answer as a solution". Tomshardware is tricky :p  Could you revert the status of my topic back to normal? I fear that this solved status will push away people who want to help me.

So you think that my motherboard should make my graphic card run then?
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April 13, 2014 2:28:17 PM

You ignored what I said. It is your PSU. Can you give me the model number? I have a feeling that not only does it not supply enough watts, but it also doesn't supply enough amperage.
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April 13, 2014 4:51:03 PM

gumbykid said:
You ignored what I said. It is your PSU. Can you give me the model number? I have a feeling that not only does it not supply enough watts, but it also doesn't supply enough amperage.



Oh i haven't ignored your first message, i've even responded to it (my first reply). For the model number of the PSU, i can't have it right now, tomorrow i will try to disassemble the rig to get the reference. It's a PSU taken from a HP computer, 300 watts, those without interrupter, 24pin+4pin, only sata cables, no molex, no 6 pins for graphic cards.
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a c 471 V Motherboard
a b U Graphics card
April 13, 2014 8:48:51 PM

You can try this to test the PSU, using the onboard HD4200 to see you can boot or not, if you can boot, that means the PSU does not have enough power for the gtx750ti but it works, if you can't boot then the PSU is the problem. Also test the gtx750ti in other PC if you ( or your friend ) have.
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April 14, 2014 3:36:04 AM

cin19 said:
You can try this to test the PSU, using the onboard HD4200 to see you can boot or not, if you can boot, that means the PSU does not have enough power for the gtx750ti but it works, if you can't boot then the PSU is the problem. Also test the gtx750ti in other PC if you ( or your friend ) have.


yes the HD4200 is working.

Here are my tests:

- GTX + HD4200, screen on the GTX = black screen
- GTX + HD4200, screen on the onboard VGA (so the HD4200) = black screen
- Only the HD4200 = boot
- Installing another pci-e express card (Radeon X1650) = boot

Also, if a moderator could switch this thread back to unsolved, that would be great, my problem is still here.
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a c 471 V Motherboard
a b U Graphics card
April 14, 2014 4:20:31 AM

Do you have other better PSU?

One more try, disable the onboard card in the BIOS when you use the gtx750ti, if the PC does not boot, that means your PSU does not have enough juicy for the gtx750ti, even the gtx750ti is the low power consumption GPU. But it maybe the GPU problem too because your don't have other better work PSU.
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April 14, 2014 4:57:38 AM

Yes i've disabled the onboard GPU. Perhaps it will free some watts and my card will run now ? Or i will try another PSU. I hope it's coming from this, i don't want to buy a new PSU for nothing.
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April 14, 2014 6:49:01 AM

It won't free up watts because it wasn't being used, it's just when both are enabled it can cause confusion, sometimes your PC doesn't know which one to use. Like I said, I need your model # to confirm that your PSU is too weak.
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a c 471 V Motherboard
a b U Graphics card
April 14, 2014 8:14:26 AM

From what you were doing, there are two possibilities eithr the PSU doesn't have enough power for the gtx750ti or the gtx750ti does not work. I recommend try the gtx750ti in your friend PC, before you decide to what next you have to do.
So if the gtx750ti works fine in othre PC that means your HP's 300W PSU is not good enough, if the gtx750ti does not work in other PC, then the GPU is DOA.
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April 15, 2014 10:00:37 AM

Well, it was indeed because of a weak PSU that it wasn't working. I've bought a new one, more powerful, and the GTX 750 ti is now working :D 

Thanks for your help guys :) 
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Best solution

a c 131 V Motherboard
a c 119 U Graphics card
April 15, 2014 10:19:09 AM

Atlast you found the right solution, its good to hear you are up and running. Never use a cheap underpowered PSU, always use a decent one. Cheers. You are welcome.
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