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Upgrading hell.

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Hi im new to this website and i have huge problems with my computer. Currently i have an Dell optiplex 745 desktop with Intel Pentium D 2.80GHz dual core, 70gb hd and 2x512mb DDR2 ram and a Radeon X1300/X1550 series. I also have 5mb internet. I have been playing world of warcraft fine on lowest settings. But for Christmas i got Starcraft 2, call of duty, and world of warcraft cataclysm. I am unable to play Starcraft 2 due to the frame rates slowing down to 0. Call of duty is also no playable. World of warcraft is playable with low graphics and constant stuttering. I was also gifted £300 to upgrading my current pc. i was looking into buying the following upgrades.
2x2gb DDR2 http://www.scan.co.uk/products/4gb-corsair-ddr2-memory-...
500gb HD http://www.scan.co.uk/products/500-gb-western-digital-w...
Nvidia GeFource GTX 260 http://www.nvidia.com/object/product_geforce_gtx_260_us...
Though the current power supply in my computer is not big enough to support the above graphics card.
I have got an bigger computer case if the upgrades outgrow the current case.
Dell website http://www.dell.com/us/en/dfb/desktops/optix_745/pd.asp...
Please help me!
Also i have an 1680x1050 resolution screen.

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Azerothian

I would not purchase all of the stuff you are about to without doing a total motherboard/CPU swap.

Take a look at this build http://www.tomshardware.com/reviews/build-a-pc-overcloc... and use as a reference. You may be OK with getting one 2gig stick of RAM for now and upgrading later to save on cost. Just make sure the Dell is set up with standard motherboard mounting holes.

You are running at pretty high resoltion for your system, if you tone it down to say 1440x900 may run better for now at least. If you are really stuck for cash, upgrade the Hard Drive and Video card, that will up your frame rate some. Those 2 things are easily transferable to a new system, more RAM would not as new systems are almost guranteed to need DDR3 RAM.

Another option would be looking at some used systems in local ads (in US sites like craigslist are a great source of computer stuff, some very recent).

Ok. Ram upgrade is a must. stick with going to 4 gb. Power supply, look into like an antec, corsair, thermaltake and ocz should be good too. I would grab at least a 500 watt unit, do not cheap on the power supply. Graphics, dump the 260. I would look into a gts 460. If thats too much cash, look at the 450. Not the fastest card, but for what you pay, should be a huge difference between that and what youve got. Those should get you going till you move to a new system.
 
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