Is this a decent computer?

That depends on FAR more than the minimalist specifications you've given, friend. Judging by your lack of information, I can surmise (probably accurately) that you quite easily know little about the proper workings of a computer, and that's okay- even people like myself whom've been working with these machines for years unending don't always understand them.

The second thing I can surmise is that you're most likely buying what's know as an OEM (Original Equipment Manufacturer) computer, and you don't know the motherboard, which is the absolute most essential single thing to know about if you're going to buy OEM computers at all,

To answer your question simply, Yes, it'll play all those. It's quite questionable, however, as to how *well* they'll perform on your system, and at what settings.

My first question to you is, are you planning on playing any more modern games down the line? The Radeon HD 4850 shipped with MY OEM computer three years ago, and even then it was considered by many a "low-mid" end card, meaning the lowest portion of mid-ends.

There's also a fundamental problem with that card- SW:TOR is a DirectX 9 game, a trend you see sadly too often by developers not willing to push people to buy the necessary hardware for a gaming rig proper. The Radeon HD 4850 is a first-gen DirectX 10.1 card- it has some issues with even modern DX9 games (so far as I saw), whereas it'll run at a significantly slower framerate at times because it requires emulation to do DX9 on a DX10.1 card (emulation, if you didn't know, is the act of simulating code in a program's native language from a different native instruction set).

I have yet to fully read up on the specs required for recommended on SW:TOR, but rest assured that anything past an NVidia GeForce 9600 these days (for the record, that's about three generations back, roughly), will at least play at a smooth framerate on absolute lowest settings.

However, what you're speaking of is around three full generations of tech trying to work together for sure- have you considered having one of your more tech-savvy friends build one for you and advise you on the parts? There are also places that do this for cash (if your friend isn't an option), though they often work on commission, so beware.

Also, AMD Phenom X4's are ~2006, if memory serves. Ergo, this is a shoddy build in the first place, and it'll inevitably be operating off of an AMD-based motherboard to work at all- not exactly the best situation in terms of reliability, since your processor IS the biggest modern issue besides your graphics card as to playing a game. Don't worry about those- until eight-cores are commonplace, you won't need an upgrade from a quad-core anytime soon out of necessity.

Finally, on the RAM and Hard-Drive. 6 GB of DDR2 MAY not like a modern game very much... most modern games are designed to load optimized into DDR3, which has been the gold standard for about 4 years now. Your hard drive is ridiculous- you could buy one of greater size for less than $50 new at this time- consignment computer stores will often have excess of such things and sell them at a discount, so check for some in your area.

Final verdict: It'll RUN them... but for how long? SW:TOR, for one, is an MMO. Ergo, things are always subject to change, minimum requirements stepped up as time wears on (just look at Eve Online for proof of that). It's a junker, and if you're buying this stuff new at all, you're getting jipped.

it can play SWTOR I don't know about the total war games, might have to scale down the graphics a bit on those.

Thats not a

Very powerful graphics solution.

It's average.

i'd like it.