GPU / PSU compactibility

Lament

Lament

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Hi,
So i have an old office computer i would like to upgrade so that i can play new games on medium to low quality.

its a Acer Veriton M6610 http://www.cnet.com/products/acer-veriton-m661/specs/
It has an old 3.1ghz Sandy Bridge I5 processor, + 8GB ram. I disconnected the DVD-ROM and only running one hard drive. No other USB devices plugged in. (using lan to connect to the network)
Here is the Motherboard : http://goo.gl/8TBj4Z

Now the Issue is it only has a 300W PSU, Apparently its a good PSU, but still only 300W. Here is the url to the PSU : http://www.ebay.it/itm/NEW-Acer-Ver...-Power-Supply-SATA-PY-30009-021-/311134444465
I'm looking to buy this GPU Nvidia GTX750 (it requires no additional power connections and the 75W provided by the PCIE slot is sufficient) http://goo.gl/M4gWtb
Looking at above link it says 300W should be sufficient. But on other sites i read they are talking about something about the amps being to low on a 300W PSU, and something about the voltage on the "rail" being to low. I have no idea what this means.
So can a expert please take a look at the above pics and tell me if the GPU will work and if i need to upgrade my PSU.
The reason why i'm trying to avoid upgrading the PSU is that a decent PSU is expensive and it already has a decent PSU with low wattage installed, i don't want to replace a decent PSU with low wattage with a PSU with a higher wattage but at a lower quality, If you get what i'm saying.

Any advice would be appreciated.
 
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I don't know about most people but I prefer not compacting my PC components as they tend not to work so well afterwards. :p :D
 
DrJohnZoidberg said:
I don't know about most people but I prefer not compacting my PC components as they tend not to work so well afterwards. :D
Click to expand...
Still, to answer the question, the higher-end the GPU the better it'll compact (I think)
 
Lament said:
In theory it should work.
What worries me is this talking about the amps being to low and the voltage on the "Rail" not being sufficient (what the hell ever that means)
Click to expand...

Rails are the circuits which supply the power to the connectors of the PSU. Depending on what PSU you have these rails will be rated to supply x amount of current.

In the case of the one you linked it has 2 x 12V rails rated at 10A and 12A. I honestly have no idea what kind of current is needed for that GPU but because it's being powered by the motherboard it is sharing with the rest of the motherboard components (probably not the CPU though as that has separate power probably on the other rail).

10A and 12A ratings on those rails is a bit low so depending on what is being shared on that rail I'm unsure if it would be sufficient current. Somebody more clued up may know but it's definitely not in the super "safe" zone.

EDIT: The Nvidia site actually states the wattage for that card at 55W, so at 12V you get 4.6A. This isn't a lot so you'll probably get away with this, if not then the worst that will happen is the computer will just shut down and then you get a new PSU.
 
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DrJohnZoidberg said:
Rails are the circuits which supply the power to the connectors of the PSU. Depending on what PSU you have these rails will be rated to supply x amount of current.

In the case of the one you linked it has 2 x 12V rails rated at 10A and 12A. I honestly have no idea what kind of current is needed for that GPU but because it's being powered by the motherboard it is sharing with the rest of the motherboard components (probably not the CPU though as that has separate power probably on the other rail).

10A and 12A ratings on those rails is a bit low so depending on what is being shared on that rail I'm unsure if it would be sufficient current. Somebody more clued up may know but it's definitely not in the super "safe" zone.

EDIT: The Nvidia site actually states the wattage for that card at 55W, so at 12V you get 4.6A. This isn't a lot so you'll probably get away with this, if not then the worst that will happen is the computer will just shut down and then you get a new PSU.
Click to expand...

Thanks for this, i appreciate your help.

I also though the worst that would happen is it wont turn on, or it will turn on and shut down when to much power is needed.

That said, I should probably get a bigger PSU.

Thanks again!!
 
Lament said:
Thanks for this, i appreciate your help.

I also though the worst that would happen is it wont turn on, or it will turn on and shut down when to much power is needed.

That said, I should probably get a bigger PSU.

Thanks again!!
Click to expand...

It would very likely power on fine but when you stress the card (like when playing a game) it would just shut off.

That said I always recommend buying a decent PSU, so many times people overlook the importance of a quality power supply and el-cheapo units can really cause instability on the system which is difficult to diagnose.
 
DrJohnZoidberg said:
It would very likely power on fine but when you stress the card (like when playing a game) it would just shut off.

That said I always recommend buying a decent PSU, so many times people overlook the importance of a quality power supply and el-cheapo units can really cause instability on the system which is difficult to diagnose.
Click to expand...

Its a Delta PSU, hence me not really wanting to upgrade, getting a PSU of the same quality in say 550W its going to cost me a lot of money.
But I do guess its money well spend, it just means its going to take longer buying the GPU :-(
 
Lament said:
Its a Delta PSU, hence me not really wanting to upgrade, getting a PSU of the same quality in say 550W its going to cost me a lot of money.
But I do guess its money well spend, it just means its going to take longer buying the GPU :-(
Click to expand...

You don't have to get anything too fancy.

This Corsair 450W is fine: http://www.takealot.com/corsair-vs-series-vs450-450-watt-power-supply/PLID38678602

Not the greatest and it's not 80 Plus rated, but at 20% load you're getting over 80% efficiency and 450W will be perfectly sufficient for you needs.
 
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