What graphics card ?

The GX 520 came in 3 different versions which were the Mini Tower, Desktop & Small Form Factor.  I believe the Mini Tower is the only one the came with a PCI Express x1 slot and the others have only PCI slots for expansion cards.  If you have the Mini Tower, I would look at this video card HERE.  If you have one of the others, you're stuck with the older PCI cards only.  

Thanks for the reply it's the mini tower I have I will have a look at this do you think this is the best one available for this machine ? 

Regards Gary

You simply do not have many choices at all for an older system like the GX 520 and I would not feel comfortable trying a PCI card.  The one I linked is the one I would try.  The Nvidia GT 610 is out there also which would offer better performance, but it just depends on the purpose you're going to use it for. You can't turn this computer into some gaming machine.  The PCIe x1 HD 5450 or GT 610 would be the most up-to-date cards you will find that I can see. 

You have practically Zero choices with a 520 because it DOES NOT HAVE an X16 video slot.

http://www.newegg.com/Product/ProductList.aspx?Description=pci%20express%20x1%20video%20card&Submit=ENE

Only the Tower Model has X1 video slot.

Hi I purchased the graphics card you suggested and it never fitted in the slots that where there I attached a photo of the slots that are there any idea how I could get one to fit .

regards gary 

You DO NOT HAVE A TOWER and therefore HAVE ZERO PCI-E video slots. Low profile 32 bit 33MHZ PCI 2.3 cards are close to impossible to find now.

Hi I purchased a card that was suggested to me but it never fitted would the ones mentioned in your link definitely fit my machine I have attached a photo of the slots if this helps.

Kind regards Gary

Hi thanks for the reply the machine I have is slightly different from the one in the photo I have attached photos of it .

Is there any type of card you could suggest and I could search for it online ?

King regards Gary

Sparkle GT 610 PCI.

32 Bit 33Mhz PCI is the wrong way to go when it costs over $50.

Regulatory Model (Mini-Tower): DCSM

Regulatory Model (Desktop): DCNE 

Regulatory Model (Small Form Factor): DCCY

Regulatory Model (Ultra Small Form Factor): DCTR

A larger system Like a Precision 380 or even a GX620 tower has many more options.

Precision 380 Intel Pentium D 3.00GHz 2GB 160GB DVD-RW Windows 7 w/Disc

Can no one even suggest a card for this I took it in to a PC shop and the guy there couldn't even suggest one  .

thanks in advance

http://www.newegg.com/Product/Product.aspx?Item=N82E16814187214

Waste of money IMHO.

SPARKLE 700041(SP610L1024LC) GeForce GT 610 1PCI Low Profile Video Card

http://www.newegg.com/Product/Product.aspx?Item=N82E16814187214   Waste of money IMHO. SPARKLE 700041(SP610L1024LC) GeForce GT 610 1PCI Low Profile Video Card

Hi thanks for the reply I think this one was mentioned before but I don't think it would fit the slot in the attached photo ?.

kind regards Gary

It wont fit into the slot with the tall bracket. That's why it has low profile bracket.