GTX 750 Ti 2GB - PSU

[Lailoken]

Hello,

 

I'm thinking of getting a graphics card as I want to play games with some kind of detail in with a decent FPS count.

I saw the MSI GTX 750 Ti 2GB and apparently it only needs a 300w PSU and is a low wattage card (draws power only from PCI-e slot and not additional connector). Also, it looks relatively small compared to a lot of GPU's and would easily fit in my case. However, I've read around and people say things about the 12v rail needing to deliver certain amperes.

The problem I (think I) have is that I have a Zoostorm PC, which has an LPA-300c PSU in it (300w +12v 12A). Will this be enough to use this graphics card without blowing up/melting/shorting?

 

Thanks for any help.

[Semtex]

I suggest to change current PSU on this one http://www.newegg.com/Product/Product.aspx?Item=N82E16817371045 Way more stable

[Lailoken]

Ok, thank you. By 'stable' what exactly do you mean? Would a graphics card like this work with my current PSU?

[Semtex]

 Would a graphics card like this work with my current PSU?

Suppose But who knows what can happen

 

By "Stable" i mean better and more secure PSU then current one.

[Tha Bloo Monkee]

If minimum recommended is 300W I would aim for something more like 350-400W to be on the safe side.  You never want the bare minimum when it comes to a power supply.  And when a PSU says 300W, that means it's 300W peak power.  I tend to dislike any of those grey no-name power supplies as I've seen many of them fail, too.  I think Semtex meant to use the word "reliable" as opposed to stable.

 

I did some quick research and found apparently you need 20A @ 12V for that card, so your PSU will likely not be sufficient.

[ShadeOfBlue]

A card such as the GTX 750 Ti, which utilizes only the PCIe slot for power, can draw a maximum of 75 Watts per the PCI Express spec. That's 5.5A on the 12V rail and 3A on the 3.3V rail. (FYI, additional 6pin power connectors supply up to 75W each over the 12V rail, and 6pin connectors supply 150W.) The actual amount of power used by the GTX 750 Ti cards without additional power connectors is around 60W. It should be using less than 5A on the 12V rail.

 

Whether that PSU will be enough entirely depends on what CPU you have, what drives and fans are in the system, etc. Considering this is not a high-end PC, and assuming you haven't added any other hardware to it, there is a high likelihood that the stock 300W PSU will be just fine. Some people run it with even less.

[CG-88]

GFX card companies over estimate to save people.

 

However, you have to take into consideration the rest of your system and additional extras like fans etc as well as if you went full load on everything you may push the PSU too much and it will have a very short life - or you will find your PC locks up or randomly shuts down.

 

I would recommend getting something higher to be safe and to prolong its life.

[Aergan]

I believe the Zoostorm PC PSU's are Maximum load rated (as in the load before it's out of it's capabilities / efficiency). I would agree with Semtex, upgrade to a more efficient & capable PSU as well.