This memory is a bad value. You will rarely benefit from running DDR3 at frequencies higher than DDR3 1600. You won't even be able to do it without overclocking. The latency of the memory is just as important for performance. DDR3 1600 CL7 is similar in performance to DDR3 2000 CL9. This article covers the subject in depth:
All of those motherboards are very similar. I like the value of the UD3R.
Which SSD ?
At 128GB or 256GB the Crucial C300s offer the best performance and value.
Which ssd is better ? or buying two 60 gb ssd and make them raid 0? its like same price?
Setting up SSDs in RAID is not a very good idea. Higher capacity SSDs generally perform better than lower capacity ones (especially the Crucial C300s). There have also been reports of frequent data corruption issues with SSDs in RAID. Sandforce SSDs in particular should not be set up in RAID.
I dont like big fancy cases, i like simple designed, quiet and good cooling ability cases.
All of those are decent cases. I prefer the all aluminum Lian Li cases because of their lighter weight and better build quality:
^ +1 and love the Lian-Li cases (look, feel, buildability, light weight) if that's your style preference. Just to provide an alternative, the Cooler Master HAF series might be worth a look-see. Here's the top of the line model, HAF X, and you can find the 932, 922, and 912 as well:
Thanks for the answer wielander.
I have a last question and than i am ready for the order the parts. what do you think about those video card whats the best video card nowadays for the price/performance.
gigabyte super o.c seems to have best clock ratings on those cards
MSI GeForce GTX 470 (Fermi) N470GTX-M2D12-B Video Card - 299 $
EVGA GeForce GTX 470 (Fermi) 012-P3-1470-AR Video Card - 314 $
ZOTAC AMP! GeForce GTX 470 (Fermi) ZT-40202-10P Video Card - 349$
GIGABYTE Super Overclock Series GeForce GTX 470 (Fermi) - 349$
EVGA - Stock, not OC'd, known for decent customer service.
MSI - Stock, not OC'd.
Given those choices, the I'd buy the EVGA unless the review of the Gigabyte card's performance was worth the $30-$50 to you. There's enough detail in that review for you to make that judgement. Don't forget the "cooler and quieter" - when talking Fermi that's useful to say the least.
No really special tools are required, but having both long and short/thin screwdrivers is often helpful, Philips head and standard. Sometimes a magnetic p-head is useful for one or two motherboard screws, depending on the build, usually the top screws nearest the cpu. You might also find pliers useful for tightening the standoffs to the mobo tray if not tool is provided with the mobo, but do not overtighten.
Best advice I can offer is go slow and enjoy the build! Don't try to do two things at once, and don't be reluctant to dis-assemble if it will help (eg) get a motherboard screw in without gouging the mobo with a slipped screwdriver.