I have an All-in-One Gateway Desktop, bought it 6 months ago. The computer has 1TB of memory, 3GB of RAM (I think so) and a Nvida Geforce9200...here's an AMD sticker too XD

The problem is that I like PC games but can't run them! And I want to replace...IDK..the Nvidia with something else more powerful, but I've heard that All-in-one computers have different pieces, that they are underclocked, yadda, yadda, yadda

So, I want to know, do I have a possibility to upgrade it?

I'm sorry but I don't think it's possible to upgrade an all-in-one computer. Well, maybe its RAM or its hard drive, but I'm not sure. I would be surprised if it's possible to upgrade its graphics card (NVidia) thought.

To make sure I'm totally right, can you tell me your computer's model name? I know that the brand is Gateway, and that it's an all-in-one, but it's a Gateway what?

Also, that AMD sticker means that your computer has an AMD processor.

Does it by any chance look like the following picture?

If not, I have no idea bro.

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My mother always calls me son of a b*dundundun* Hell yes I am. just kidding Auzzie

You'd be much better off custom building a new PC.

It is not possible to do any real upgrades that will make a true difference on a all in one.
Just sell it and buy a custom PC if that is possible for you.
That is usually how you can play PC games.

Source:
I own a IT repair business.

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Let the good times Roll On!

if the gateway is relatively new you can likely use the RAM, HDD, DVD and PCI E graphics card in a new system. all you have to buy is a new mobo+CPU and cheap case

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^ If you replace your mobo you will need a new Windows license, which will run you at least $80 for an OEM copy.

I'm assuming your graphics are onboard? You probably have at least one PCI express 2.0 slot you can use for a new graphics card, you need to check to see if you do. You will also need to more then likely, replace your power supply unit before you put a better graphics card in. You need to check and see what wattage your PSU is. If you do decide to replace the PSU though, that will require you to unplug everything in the computer and more then likely void your warranty.

Try to find the exact specs of your PC and I can try to push you in the right direction.

Wait a sec... "all in one"? Does that mean your computer is essentially "in" the monitor? Meaning you have no tower? If so, you are definitely screwed. =/

edit: lol, nevermind, I'm assuming it is. Scratch all that.

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And The Heavens Shall Tremble [5/15/2012]