What to buy?

So I got 400€ for the next month and I was thinking about to buy some new equipment. In the want have list is a PS4, XBOX One and some parts to the PC.
At the moment I play most time PC and work with it, but wanted to ask you what you think it's the best?
For the PC part it's as listed:
 - Intel Core i7 4770k with 4x 3,5GHz ~ (3,9GHz) for about 300€
 - Mainboard Socket 1155 MSI B75MA-P45 for about 60€
 - DDRIII-1600RAM 16GB Corsair/CL10/Kit-2x8GB/1.5V/Vengeance for about 110€
 - 730W be quiet Pure Power L7-730 for about 90€
I see I need about 560€ at least for the PC, I don't know, if that is the cheapest prices around.
Well I guess for the consoles I don't have to tell anything, for XBOX one it's Forza Motorsport 4 I would buy and PS4 Diablo 3, Gran Turismo 6 or Final Fantasy 14.
So far for the momentary PC specifications:
 - AMD 64 6000+ with 2x 3,22 GHz (no overclocking possible)
 - ASRock Alive NF6G-GLAN P1.50-8A
 - DDRII-800RAM 6 GB (different manufacturer)
 - Zotac GTX650Ti 2GB GDDR5-RAM 128 bit (941 Mhz ~ 1200 Mhz / 5400 Mhz ~ 7000Mhz)
 - POWER LC6550 ATX12V 550W
So I hope you got some suggestions for me. (\s/)

As you're price-conscious, you really don't/shouldn't need an i7, or probably an intel at all. AMD competes on price/performance. Intel's best is generally better than AMD's best, though intel will charge you an arm and a leg for it.

Here's a bunch of components like you selected on the AMD side, for just the cost of your quad core CPU:

http://www.ebuyer.com/product/409186 - AMD FX-8320, 8x 3.5Ghz (unlocked, you can easily run it at 4ghz, 4.5+ with better cooling)
http://www.ebuyer.com/product/271788 - Decent modern motherboard (any AMD FX can be overclocked in any AMD motherboard, you chose an overclockable intel chip, but a motherboard that intel artificially prevents you from overclocking in)
http://www.ebuyer.com/product/432450 - 8GB DDR3 1600Mhz CL9 memory - you might think you need 16GB, you 99% probably don't. I just built a new computer and put 16GB of memory in it. I have never seen my ram usage go above 5 or 6 GB.
http://www.ebuyer.com/product/413805 - Good 550W PSU (rebranded seasonic).

Something you really should consider also is an SSD. It makes the biggest difference of anything in how fast your computer feels. Things just open instantly. You are never waiting for your drive any more. The Samsung 840 Pro series is the top dog, though you will pay a premium for them. The Samsung 840 Evo line is their new mainstream series, which I would heavily recommend. Other than that, Crucial's M500 series are another line of SSDs to look at. Stay away from OCZ.

First thing thanks for fast answer, but the SSD are nearly unpayable. 360GB are about 285€ means 245 enlglish pounds.
I know the AMD processors are much cheaper, even the FX8350 is with 170€ cheaper then the Intel reference, but official slower then the AMD.
http://www.chip.de/bestenlisten/Bestenliste-Desktop-Prozessoren--index/index/id/693/
So for for the RAM you must be right, I got never limitation through RAM. I only got 6GB so far but never hit more then 4GB in a extreme Situation.
Maybe I should say so far, I always play everything on max settings, so this should be possible with these parts, I hope so.
AMD is much faster under windows, but in games there I can say so far from my experience it's INTEL. I got the AMD 6000+ and my brother these one:
http://ark.intel.com/products/33910
But the one from my brother is much faster under games like GTAIV and Minecraft who depends most on the CPU. He got only a ASUS ATI 4850HD with 1GB in his PC for that point. I often play games like Crysis 3 and such too, so it must be really fast.
So an other question is, is water cooling recommandable?

Your "experience" is very out of date, and has a big flaw. You're using an Athlon 62 X2, which is almost a decade old. Comparing it to your brother's Woldfale Core 2 Duo is not fair - of course it will be much worse, the wolfdale is much newer, and it's a high end model. Your Athlon 64 X2's Intel counterpart is a Pentium D, which sucks balls in comparison. The equivalent of the Intel E8400 is an AMD dual core Phenom II, which holds its own fine.

There is more to a chip than simply what Mhz it runs at. A 4Ghz FX core might give as much performance as a ~7Ghz Athlon 64 core. If you compare processors that were released many years apart from each other, you will definitely find a big difference.

If you wanted to waste money and had a giant budget and wanted the absolute highest performance, then yes you should go intel. You will be spending 1,500-2,000 euros though. For gaming you will get the same performance for a fraction with AMD. here's another detailed comparison.

A decade is ages in the computing industry - you can't use your A64 X2 as a yard stick.

And as for the SSD, you really should. You don't have to get a big one, 128GB is fine, 250GB if you want some more breathing room. I use a 250GB SSD. The idea is to not put all of your data on it. Just your OS, programs you use frequently, and certain games. With a 250GB SSD I have plenty of room for my OS and lots of steam games, with about 80GB free space. An SSD is so worth it.

Use the money you'll save by not letting Intel rip you off, and spend it on an SSD

As for water cooling, I would say yes if you prefer quiet. I use this water cooler on my FX-8320 at 4Ghz and it keeps it nice and cool, while being super quiet.

I am ROCK HARD right now.

There is more to a chip than simply what Mhz it runs at. A 4Ghz FX core might give as much performance as a ~7Ghz Athlon 64 core. If you compare processors that were released many years apart from each other, you will definitely find a big difference.
A decade is ages in the computing industry - you can't use your A64 X2 as a yard stick.
Use the money you'll save by not letting Intel rip you off, and spend it on an SSD
As for water cooling, I would say yes if you prefer quiet. I use this water cooler on my FX-8320 at 4Ghz and it keeps it nice and cool, while being super quiet.

That the MHz are not the most important thing on a CPU I allready knew, because the Cache and threads and stuff works together for the end result.
And I know, that my CPU is allready 6 or 7 years old, so it's a dinosaur in PC age. And after seeing this video I'm sure I will buy a AMD, because I only play on 1080p and with a non crossfire / SLI card. By the way I'm using an old SATAII HDD with a windows rating of only 5.8, against that there is my CPU awesome with 6.3.
So I hope I can get a SDD to, because the CPU, Mainboard, RAM and Power supply will eat allmost all of my money.
The most important thing for me is a good overclocking ability and a silent cooling, so it would be good for me.
An other question is, is a watercooling even useable for graphiccards?
And should I do the installation of the watercooler myself or from a pro?
So I give a picture of what windows say about my PC, but I know some parts a really bad.

Water cooling kits exist for graphics cards, they are very fiddly though. As long as you don't get the highest end card (GTX 780/770, or Radeon 7970/7950), they are pretty quiet. I can never hear my 7770's fan, it barely spins above 20% speed.

Water cooling kits like the one I linked are called AIO, or All In One kits. They are sealed. So you just attach the base to your CPU, and the radiator to your case.

The windows experience thing is basically irrelevant. Speccy will show your PC info better:



Here's that water cooling kit in my pc:



What site(s) will you use to buy your parts? I like to go on computer part sites with a budget and build stuff =o

So are my momentary specifications and so far I can think, I will stay at the moment with my Zotac GTX650Ti with 2048MB GDDR5 128bit PCIe3.0 CUDA Card.
Maybe I will buy later a GTX670 but that can surely wait and till then maybe there are allready better ones available.
I never bought something in the Internet, so it's the first time so far. Which is your recommandation for buying stuff in the Internet?
I first thought about ebay.

Not ebay no, normally there are some popular online e-tailers for your country. Newegg is the major USA one, Ebuyer is big in the UK etc. Amazon sells quite a lot of computer stuff and they're worldwide.

And yes, I don't think you need a new graphics card. At the moment you cannot even use your graphics card's full performance. The rest of your system cannot "keep up" with it. If you built a new PC and put your 650ti into it you would get much better framerates.

On my old computer (Intel E5200) with my current graphics card, the most I could get is about 20-30fps in Metro: Last Light with my Radeon 7770. The same card in my new PC and I get about 100fps.

So I'm from germany and I can say I would stay with the world wide one Amazone.
Before the store closed, I bought it in my city, but now I have to rethink, were to get the parts for my PC.
I can say you helped me a lot, because I had bought a much to expensiv stuff, because of my lack of knowledge. So thank you very much.