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Club3D HD 7750 1GB GDDR5 on Headway 500W PSU?

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  • HD
  • Power
  • Graphics
Last response: in Graphics & Displays
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July 10, 2014 5:36:35 AM

Hi guys,

I am looking to buy a HD 7750 to upgrade from my integrated Intel graphics. Trouble is, after much research on the internet, I found out that my PSU brand (Headway) is terrible, and there is every chance that it will not deliver as much as 500W, and will therefore risk frying my other components under heavy load. Also, there is something about +12V rails being discussed. No idea what that is, will anyone explain that to me please?

That said, I also know that a HD 7750 is not a power-hungry card, I think it draws about 55W from the PCI-e slot, and requires no addition power pins from the PSU.

Please advise me as to whether there is any chance of making the graphics card work without destroying the rest of the motherboard components. I will not doing anything to it, like crossfire and overclock, since I have no idea what that is too. Also, please note that I am strongly opposed to buying a new PSU. I understand that it's better for the computer to have a quality PSU, but right now, I just don't have the budget to do so. I really don't, even if PSU are as cheap as fifty dollars. Sorry about that. The seller will be providing me with a VGA to DVI cable as well.

Here are my computer specifications.

Motherboard: ECS H61H2-MV
PSU: Headway 500W (model: HMI-PS/500W)
Processor: Intel Pentium CPU G2030 @ 3.00GHz (2 CPUs), ~3.0GHz
RAM: 2GB
(Integrated) Graphics: Intel HD Graphics

Looking forward to your answers. Thank you!

More about : club3d 7750 1gb gddr5 headway 500w psu

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July 10, 2014 5:46:02 AM

it's written on the psu sticker. the 500W is the total wattage but only some of it (depending on the quality of the psu) is on the 12V rail. you should have a table with x V(olts) / x A (mps) totaling up to something around 500W ( V x A = W if you remember your physics lessons)

the graphics card will need about 40-50W on the 12V rail (4-5A) to run. this gets added to the current power draw.

i would say to try it if the psu is not older than 1-2years. if it's also old in addition to not from a reputable manufacturer you have a small chance for it to fail with unpredictable results. your total power draw with the card too under load will be somewhere around 200W (MAX) so even if bad the psu should work.

edit:
found the psu details: so you have 25A on the 12V rail -> so it's actually a 350-400W psu in fact. i stick to my previous comment, if it's not too old (worn out) go for it and try it, if it's not unstable use it BUT change the psu as soon as possible. if it's over 3 years you have a small chance for it to fail when you plug the card, small chance of stuff going bad. and the chance increases as you add years. either way, even if it works get a better psu as soon as you can afford it, get a good quality psu, minimum 400W.
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July 10, 2014 5:50:11 AM

blackogen said:
Also, please note that I am strongly opposed to buying a new PSU. I understand that it's better for the computer to have a quality PSU, but right now, I just don't have the budget to do so. I really don't, even if PSU are as cheap as fifty dollars. Sorry about that.


What about $20?

My concern is that you go ahead an put the extra 5 amps of draw on your 12v rail and your PSU goes bang, taking the CPU, motherboard and new 7750 along with it.
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July 10, 2014 5:54:43 AM

If you're "strongly opposed to buying a new PSU" and "understand that it's better for the computer to have a quality PSU, but right now, I just don't have the budget to do so", then I don't really understand what your question is. Are you just looking for someone to agree with you running it on the Headway power supply?

Your card recommends a 400w power supply and the Headway claims 500w and 25A on the 12v, which even if they only lie by 20% is still plenty enough. There's no info or reviews on the internet to know if they are lying by 20% or lying by 50% so you'll just have to weigh for yourself the cost of a new power supply vs the chances of it damaging your components.
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July 10, 2014 7:19:24 AM

Thank you for your prompt replies, gentlemen. I got this pre-built computer that had the PSU included. It is only six months old, so I guess I can give the graphics card a try, as what laviniuc said.

LucoTF, that is my concern too. $20 sounds OK, what would you recommend?

bccorrupt, that's right. I am indeed looking for someone to agree with me to run it on the Headway PSU. As I said before, I would like to avoid buying a new PSU if possible, so if somebody could tell me that it will work with my current PSU, I would be more than happy, haha.

Once again, thank you all for the replies. I guess I'll watch for LucoTF's recommendation for a PSU before I try the graphics card on the Headway PSU.
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July 10, 2014 10:28:09 AM

I have decided to give my Headway PSU a go. Whether it works or not, I will still get the EVGA PSU that LucoTF recommended asap. Big thank-you, everybody who helped. :) 
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July 10, 2014 11:21:08 AM

I couldn't responsibly make that call for you op, but best of luck and I'm much less concerned now that the headway is a more short term solution :) 
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July 11, 2014 11:51:02 PM

UPDATE: I tried it and I think it's working fine so far! No explosions or anything, downloading the drivers now.
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July 11, 2014 11:55:40 PM

Of course it wouldn't go out while the card is drawing 5w at idle. Run it through some benchmarks and games and see how it does.
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July 12, 2014 1:56:41 AM

Ran 30 minutes of Rising Storm/Red Orchestra 2 on High and 30 minutes of Assetto Corsa. Both worked fine. Over the moon now. :D 
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July 12, 2014 2:10:27 AM

That's excellent news, enjoy OP :D 
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