Which graphics card should I get for my PC?

http://www.alza.sk/corsair-cx500-d202097.htm

The link is above.

Would that mean 64 bit?

64-bit? where do you see that?

You'll get price for shipping when you are making your order. I just did it and it took about 4 clicks before i got to the part about shipping.

http://www.alza.sk/Order/Order2.asp

I meant. Would the dual channel make 64 bit?

I meant newegg. That delivery.

EDIT: How could I "trade" it for a 2 x 2GB channel? Does it cost something,'cause I bet it does. Nothing is for free nowadays

One module: single channel is a single 64-bit bus to the CPU.
Two modules: dual channel is two 64-bit buses to the CPU giving you a 128-bit bus to the CPU.

Hit the orange/yellow "Add to Cart" button on the products page to start your purchases. I've done it for you already below.
http://secure.newegg.com/Shopping/ShoppingCart.aspx?Submit=view

Okay, how would I "trade it?"

Oh, when i said that i meant with a friend or barter on a site like kijiji.com. That or sell it then put some money with it to get a kit with 2x2GB sticks. lower latency (CAS) the better.

If you've ever seen this string of numbers in RAM details (ie 5-5-5-15 DDR2 timings or 7-8-7-24 DDR3 timings), the first number is your CAS latency. This is the most important number to look at when buying RAM. the lower the better, but you dont have to get the absolute lowest, so don't try too hard for that if it means higher cost. I know you're not building a monster machine.

Will it have a significant change? Would it affect some gaming?

Yea, it'll be noticeable.

There is absolutely nothing wrong with multiple 12v rails, nor is there anything wrong with the antec power supplies.
Though the corsair 500w would be my choice.

Ah yea there is. Lots of info out there to back up my claims. Also, Antec PSU's have a higher failure rate compared to the other manufacturers. Surprisingly, Corsair is up there too. When i was looking at the AX series PSU's, a LOT of newegg customers had EOA or failed units, so I went with the Coolermaster Silent Pro instead.

The memory latency explanation is a bit misleading, unless you explain that higher speed RAM by nature, has higher latency numbers.

DDR-400Mhz, has a latency of about 2.5, whereas DDR-3 1333Mhz, has latencies of 8 or 9. It's all good, as long as you remember to compare apples to apples, and oranges to oranges.

I have a DDR-3, but I don't know about the MHz

Now, on this page is the list of the GTX 550 TIs

Which one should I get from the list?

Page: http://www.alza.sk/graficke-karty/dle-vyuziti/herni/nvidia/geforce-gtx550-ti/18852551.htm

Thanks

http://www.tomshardware.com/reviews/corsair-vengeance-crucial-ballistix-kingston-hyperX,2907-6.html

Don't worry about memory until you can afford at least a 2.8GHz triple or quad core CPU, and a 1333MHz or higher dual channel memory kit.

What 550 Ti should you get?... easy, the Zotac. If overclocked 550's are anything like the 560's, then the 100MHz overclock over reference you get with the Zotac should give you some good gains, and save you from overclocking it yourself. And considering how underpowered your system is right now, you can use all the help you can get! If you could of afforded the 560 Ti, i'd say buy reference and overclock it yourself, because at reference (stock), it's already a beast.

Don't forget the power supply. That Corsair Builder CX500/600 has your name on it!

Regarding the "multiple 12v Rail" debate: I deal with this constantly on a day by day basis for customer builds and have delved into it thoroughly

Here is the best explanation for the "single vs Multiple rail 12v PSU" debate. Its from JonnyGuru.com (they know what they are talking about)

From:
JonnyGuru.com

http://www.jonnyguru.com/forums/showthread.php?t=3990

The long and short of it <<< pun intended.....It's the quality of the PSU and procuring ample amperage/wattage, not the rail count.

If I'm helping someone, I'm gonna recommend single rail PSU's. I always think long term, and not for the moment. Are multi's crap? No, but I won't recommend them first. I certainly wouldn't tell someone to go single if it meant spending an unreasonable amount over a multi just to get it. No matter what johnnyGURU said, I've read at least 3 sites that said the opposite. No matter what, the single rail will always be the most reliable and most compatible with your hardware.

PC P&C said in a MaximumPC article at the same time of your johnnyG article (2008), that single rail is the future. They gave the same reasons I said in my earlier post about it. I'm not 100% against multi's, but I'm gonna side with a big name and well respected manufacturer (and others) over some guy with a website. SLi/Crossfire or not.

http://www2.maximumpc.com/article/single_rail_versus_multi_rail_power_supplies

Hi Jurassic,
A few observations here:
Firstly, you state that :

That is not the case, the Maximum PC article was posted a full year prior to the JonnyGuru article. (March 28th 2007)
Date line from JonnyGuru article:

Date line from Maximum PC article:

Secondly, you state;

The Maximum PC article says nothing of the sort. The entire (and very brief article) Gives no facts based of its own testing. In fact, it does nothing more than re-state each sides "spin" on which is better (single rail or multiple rail)

From the Maximum PC article:

....and ends with this conclusion:

Thirdly you state as reasons for your decision and recommendation.

Okay, however not only is JonnyGuru the only one here that has given and done hands on testing to the debated point here, but "the guy with a website" is the one with the SunMoon SM-8800 load tester , the USB oscilloscope, and the electrical engineer doing the testing.

4)
you stated:

I find it very hard to believe that three "respected " sites would make such a crass statement that anything electronic will always be the best solution.

The problem here is, you have offered only an article that does nothing more than summarize the (as maximum PC says itself) "spin" from two manufacturers, and come to the same conclusion as the article I posted.

Oh no a year difference? Because technology never changes in a year right? Johnny has some testers? Well, manufacturers have... FACTORIES, R&D, Investors... Let me know when johnny boy has all that...

Maximum Article:
As the sole PSU vendor pushing a single rail design for big PSU’s, PC Power and Cooling’s argument is quite intriguing. Even though the company once also pushed a multi/split rail design, the company has since decided that the single rail is the future.

The problem with multi-rails, the company says, is that power tends to get stuck on the individual rails. If the PSU, for example, allocates 36 amps of power from rail 1 and 2 to the CPU but the processors only consume 22 amps – the rest cannot be reallocated to the GPU or hard drive array. With a single-rail design, if the CPUs only use 22 amps of juice, the rest can be sent to the GPUs or whatever else needs the 12 volt power because it all comes from a single bucket of power.

BTW, show me where it says single rail PSU's have a higher failure rate, then you can talk **** and keep holding onto that article from some guy three years ago... yes... three.

LOL, for someone so "educated" on the subject, its funny you're asking me to find more sources, and all you've done is refer to a JohnnyGuru article from three years ago in a forum from some guy with a tester and website.

What I've heard, is that most multi-rail power supplies only have a single source, with multiple wires in parallel for multiple rails.