So recently i've decided to so some upgrades on a Dell Inspiron 530s that i bought from a friend. As far as i know, it's a stock model with no upgrades. Basically, i just want to get it upgraded so i can play some of the newer games out on the market. The only ones i really play are things like Minecraft, Realm of the Mad God, so i'm not trying to make it a high end computer or anything. I took a picture of my specs:

My budget is about $200, so at a bare minimum i want about 8GB of ram, a faster processor (i was thinking an Intel Core 2 Duo?), and a better graphics card. When looking the computer up i found threads talking about the limitation of the computer due to the case. I was wondering if i moved the computer to a new case if that would help.
It can run games like minecraft, but it has to have optifine, on the lowest settings, and the FPS is still dropping as low as 1 (Normally fluctuates between 16 and 32).
Basic rundown of the specs:
OS: Windows 7 Ultimate (32 Bit, will be upgraded to 64 bit)(200 GB) and Windows XP (50 GB)(Backup OS)
Processor: 2.20 GHz Single Core 64 bit.
RAM Memory: 2GB DDR2
HDD: 250 GB (Not sure on this)

My budget is about $200, so at a bare minimum i want about 8GB of ram, a faster processor (i was thinking an Intel Core 2 Duo?), and a better graphics card. When looking the computer up i found threads talking about the limitation of the computer due to the case. I was wondering if i moved the computer to a new case if that would help.
It can run games like minecraft, but it has to have optifine, on the lowest settings, and the FPS is still dropping as low as 1 (Normally fluctuates between 16 and 32).
Basic rundown of the specs:
OS: Windows 7 Ultimate (32 Bit, will be upgraded to 64 bit)(200 GB) and Windows XP (50 GB)(Backup OS)
Processor: 2.20 GHz Single Core 64 bit.
RAM Memory: 2GB DDR2
HDD: 250 GB (Not sure on this)