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Need to update Grahphics

Last response: in Graphics & Displays
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I have recently purchased this computer:http://www.meshcomputers.com/Default.aspx?PAGE=PRODUCTV..., except when I bought it they had ATI Radeon HD 4200 Graphics as standard, instead of the 5450 it now comes with. I play AION, and the game is on the verge of not being playable owing to lag. I believe that my graphics are integrated, which effects the performance, and it comes with crossfire x which I believe I should ignore and purchase a stand alone graphics card. I have around £150 to spend on a graphics card. I was hoping that someone here could give me a link to a good graphics card that I could purchase and help explain how to install it. I'm worried that I try to purchase a graphics card that is not compatible, and was told that this would be a good place to ask.

Thanks in advance.

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Graphics card Master

Welcome to the Forum!
Please repost the link or give us full specs for the system.
Mesh seem to build better systems, but like most prebuilts, the powersupplies can be too weak to power a strong graphics card, so open the case and take a look at the PSU rating label: We need to know its Wattage and, very importaintly, the total AMPS on the +12 volt line or lines and if it has any 6 pin PCI-E connectors. If you do not know, take a look here to see what the connectors look like:

http://www.playtool.com/pages/psuconnectors/connectors....

Graphics card Master

I cannot tell from the photographs how large the case actually is but a normal AXT PSU is 150x86x140 m.m (Widthxheightxlength) so either call Mesh and see if one will fit or it's time to get the tape measure out!
Without a PSU upgrade you'll just get away with a HD4650, it's fairly short and sips a mere 48 Watts at maximum load, ignore the 400 Watt requirement it's just marsh gas. Problem is it's not that powerful either, but it should handle Aion at medium/low settings at 1680x1080.
I suggest you also measure the space in the case available for the new card, again, I cannot tell how big the case is from the photos.
For a better experience you'll need to upgrade the PSU and card together and without those dimensions I'll play it safe and suggest a 500 Watt PSU from a good maker such as Antec, Corsair, OCZ, Seasonic or FSP and a HD5750 card, you'll get both for less than 150 pounds UK easily if you shop around a bit.
Some good places to shop: Novatech, Pixmania, Ebuyer, Overclockers, Dabs, CCL, Scan and Microdirect are good places to start searching.
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