Hi everybody,
Recently I started a lot of threads about my future computer and I finally have almost final version I just wanted to ask what do you think about it and if all components are compatible.
Motherboard : MSI P55-GD80 - Intel P55
Graphic Card : Sapphire HD 5870 Vapor​-X ​
Case : CoolerMaster HAF 932
Keyboard : Saitek Cyborg Keyboard V7
Headset : Creative HS-1100 Tournament Gaming
Mouse : CM STORM Sentinel
Monitor : Samsung SyncMaster P2450H
HDD : 2x Samsung SpinPoint F3 HD103SJ - 1TB (one for OS)
RAM : A-DATA + Series 4GB
Processor : Intel Core i5-760 (I will definitely pick Intel just not 100% sure if this one)
PSU : Dont know which one and I need help please pick from this www.czechcomputer.cz or this www.alza.cz or this www.mironet.cz site.
DVD ROM: LG GH22NS
OS: Microsoft Windows 7 Home Premium 64 bit
And I am still open for suggestions.

Is there any reason why you didn't elect for a 6GB triple channel RAM config?

Not enough money and I wanted to have superb Graphic Card.
Do you have any suggestions?

when are you planning on buying refreshes are due from ATI soon (as in by october according to most sites)

Wodmarach I plan on buying this computer by middle of this month.

Yeah, looks good apart from the RAM. You need at least 6GB these days. But ofcourse you can buy more later.

Which price acceptable RAM from those site would you suggest? (The exchange rate are normally this 1 dollar=20 CZK , 1 GBP = 30 CZK, 1 EU = 25 CZK)

I check the part number I want on crucial.com and then buy from newegg. I can usually save 20-30% off the price of their high end RAM.
If you have the cash, Lian Li case, that is all.

When pairing RAM with motherboards, it's usually a good idea to verify compatibility at the RAM and/or motherboard manufacturer's site using the detailed part number of RAM.
Originally I thought your mobo chipset was triple channel capable when I first glanced at it but its a socket LGA 1156 so dual channel DDR3 only.
As far as your power supply, are you planning on running any extra video cards in crossfire anytime soon? Here is a PSU calculator to help determine the wattage needed.

I can't say I care for the case much. But to each his own.
I definitely cannot recommend Saitek keyboards. Not the most responsive ever made.
For PSU, I've heard bad things about Coolermaster from good sources. I generally quite like Corsair for value for money and a decent warranty.

One friend of mine keeps telling me that this monitor has TF technology (from certain angle you will see nothing but black) and it isnt worth it. Is it a good monitor or do you know better for similiar price?

While I haven't researched EVERYTHING, I've spent quite a bit of time deciding what to get for myself, so there you go:
1* Processor / MB - socket 1156 is considered more casual, with 1333 i7s being aimed at enthusiasts and gamers - why not get i7 930 (and possibly OC it in the future if necessary) ?
Albo - USB 3.0. For example: Gigabyte X58A-UD3R.
2* Graphics / monitor - have you considered giving (Stereoscopic) 3D gaming a try ? Since you're already buying new stuff, you might want to invest in, say Acer GD245HQ for a 120Hz monitor... and you'd probably want an nVidia card, since they have their own 3D kit and pretty darn good game support...
GeForce 480 is pretty similarly priced as 5870 yet performs better in a lots of tests...
3* Keyboard - depends on the type of games you play, I'm typing this on a Roccat Arvo and it serves me great... although I play all my FPS/TPS games on a Steelseries Fang.
4* Headset / sound card - why not get real surround sound instead of a virtual one ? Like in Roccat Kave ?
Also - you'll need a decent soundcard (like a Creative X-Fi).
5* Mouse - how about Razer Lachesis ?
6* HDD - are you sure you don't want to go with an SSD ?
7* RAM - as others suggested: get 6GB.
8* A Blu-ray drive ?

Which RAM would you suggest, also found these two keyboards that look nice Saitek Eclipse II and Microsoft SideWinder X6 Keyboard. The Roccat kave headset looks amazing, and I dont want to go with SSD due to lack of money. I am kinda happy with sentinel mouse but I am open to any suggestions.

If you already have a decent keyboard and mouse there's no real need to update at the same time as the rest of the system unless you are dissatisfied with them. I'm still using the same ones from my last build, and I will probably use them for the next build too. :)
As for USB 3.0 that could be nice to have for future-proofing if you can find a suitable motherboard for around the same price, but bear in mind that it will take a very long time for 3.0 devices to become common, and even then they are backwards-compatible with 2.0 ports; they will operate at the slower 2.0 speed and may need a second USB connection to provide additional power (as is already the case for some 2.0 devices) but will otherwise work as expected.
The same goes for Blu-ray; if you intend to build up a Blu-ray collection and watch or stream them from the PC it would make sense to grab a drive now rather than buying a standalone player, but otherwise it would be much cheaper to wait until you actually need one.