1.the cpu:
If its just for games or WoW id consider the i2500k.
differences are the the 2600k will run 8 threads (2 threads per core) which really isnt of any interest unless you do video and cine editing .
8 vs 6 l3 cache nothing much there either.
the cpu speeds are almost the same and in some reviews the 2500k has clocked more easily to higher speeds,if your interested in that.
the performance differences between the 2 cpu's at standard speeds in testing seem to be barely measureable and can be accounted for by the fact that the 2500k comes as standard at 3.3 ghz and the 2600k at 3.4Ghz.
Personally for the $100 price difference,(its actally more than that in europe,more like $130), ill be going for the 2500k.
2.
Mbrd, I dont really know much about it.like i said ill try the asus p8p67 pro,there seems to be a good customer base and its more readily available here.
3.
Gx card Im sure its good
I havent read any reviews or the like since the 5 series came out but I doubt ,for WoW at least I would notice any difference between what I have now(460) and the 5xx.
4. Memory Gskill generally get good reviews:
and those have had some + responses and have nice timings.
Memory speed once again doesnt seem to be as much of an issue with 1155 ,unless running heavy video /cine work.
5. psu
most power u can afford and a good brand name cant hurt ,but the thing the psu suppliers arent going to be shouting about is that the 1155 stuff seems to be very low power consumption compared to a clocked 1366 setup.
A reason you might need that much power is if you were going for more than one gx card ,but since a single 560 is kind of expensive it might be awhile before u go for a 2-3 card setup..if the mbrd can take it.and if you really need more than 1
.
6.A case . well theres a lot out there,just make sure you like the look and that there is provision for at least one 120mm exhaust and one 120mm intake.
Im not a big fan of the mesh covers over drivebays akward to clean.
Nice looking case im not sure about big fans at the top of the case tho.
every time you turn the pc off dust is going to settle down thru there but main worry would be can of bud danger.. or coffee etc.
If you stand it on the floor or low down spills could get in.
If its on the desk ,well im allways putting mugs of coffe etc on top of mine(solid top) bad habit of course but just something to bear in mind.
You dont mention a cpu cooler ,but if you arent going for a hi overclock u may not need one.
the gx card if your monitor isnt at least 24in even the 560 might be overkill.
You using whatever keyboard n mouse u had before?
that mbrd has sata 3 connects yeh?
There are sata 3 ssd's around but they dont seem any better
Sometime soon there will be sandforce 2000 sata 3 solid state disc controllers coming out with data transfer rates around 500 mb sec read and write (bound to be expensive of course.
you could get a low capacity ssd like the ocz vertx 2 min 60gb id say for breathing room to have your os and perhaps WoW on and then say a 1tb for all normal storage.
Or get something like the 500gb hybrid drive,mentioned before which is faster than any normal hdd.
The pcie x16 limitation seems to be the same as 1156 stuff.
so your sli dual would be on 8x8 "they say" it doesnt make much difference and u still get a performance increase running 2x8
Its a chipset limitation.
There are more expensive p67 boards out there that quote pcie 1x16 1x16 and 1x8 like the gigabyte ud7 but apparently this is due to putting on some expansion chip on the board from nvidia and it ups the total cost a lot like up to 1366 board cost (native 2x 16 +).
Even with this chip apparently there is still a bottleneck.
So ive read anyway ;0.