Stop right there first timer!!! Before you buy anything watch videos one, two, and three from newegg. They talk about what the parts do are and how to build with them. (even if you got your heart set on parts watch all 3 and it could really help like it did me) There a bit long but better to have your cherry pop knowing whats happening then to just get pounded and not know whats going on.
Ill list some stuff I learned before and after I built mine keeping in mind that you will be rendering and gaming. Ill also try and show you where to future proof so you don't waist your $$$
Any question you might have or do have will most likely have already been asked on OC.net or on other sites so dont be afraid to look around or ask it your self
Tips from a newly broken in pc builder June 2012
CPU: i-7 anything is hyper threading. (its just how the CPU crunches data and if what you run does not have it your just burning your cash and perhaps even a profomence drop) Unless you need it for one of the programs id really strongly advise you go with the i-5 3570k. The i-5 3570k is "THE" top dog in the i-5s and it has a K witch is unlocked for overclocking. Over clocking you can look up later but it runs the parts faster as if they where a step or so above what you have stock. Any who the i-5 will also be a cheaper then the i-7s. More $$$ is not always better. If you want lower temps or do any OC and dont buy a heat sink your stock heat sick will explode into a ball of flames and kill your CPU and maybe other parts too.
MOBO: get one that will fit your needs. Your going to render and most likely will SLI/Corssfire your system sooner or later so get a mobo w/ AT LEAST two PCI-e 16x slots so they will fit. Want to plug that sucker up to a HD tv to play movies? Get one with a HDMI port. Want wi-fi built in so its not eating up other slots? Then get one with it. Its all about what you want to do with it. Just make sure the CPU Soc will fit in the mobo you pick. Also when you pick RAM that the pin size will fit in the mobo too. Furture proof your self get a mobo you can grow with also.
GPU: I have a GTX 670 FTW Edition myself and love it. As for games what wont it play on Ultra.
As for your rendering you can get away with one 670 FTW or just normal 670 but id really recomend SLI 670s or just one 680. For the 690 is really an overkill to your wallet compaired to the 680. If you do end up going with one 670 I really think you should pay just a few more $$$ for the FTW edition.
PSU: This thing will be your bud for years if you do it right. Sure a single 670 or 680 GPU will not need a 850W PSU but you are rendering and most likely will SLI/Crossfire and will need more juice and if your like most people after your build your own you will try your hand in Overclocking and this will require more juice. Another thing is brand. Get a known brand. I think most every one will agree Seasonic is just about if not "THE" best for PSU brand around.(Corsair has Seasonic make them PSU change the name and color and charge more $$$) To buy Modular or not to buy, that is the question. If your case has a window, and its not modular, and your not David Copperfield then people will see your cords. If thats not a prob then **** it non modular. I felt the same way when I got my PSU and now im replacing it with a modular Season X850. Again future proof your self dont spend $99 now on a part then you end up replacing a year later for double the price. Also theres really good deals on newegg for modular PSU and cyber monday is almost here.
RAM: Games and rendering 8G not recomended, 16G sweet spot, 24G showing off, 32G setting the dude on fire after a point blank heat shot. The RAM needs to one, fit the pin type on the mobo and two, needs to be the right channel. So 4 4g stick is cool if your mobo is quad chanel. To save room for the furture id go with 2 8G sticks but that mean your mobo would need to be dual channel to get the most out of your RAM. Dual RAM will work in a triple channel but it wont be as efficient.
HDDs/SSDs: all about what you want out of them SSD are fast and great for booting and even better for gaming if you got the pocket for it. HDD id would not buy anything lower then 7200 RPM. also the WB red is a RAID thing.
Case: Get somthing that will fit your mobos form factor and that looks nice and has decent cooling options unless you want to make your own blow holes.
OS: I would really w8 on win 8 just saying. Id roll it back to 7 and NEVER EVER go Vista.
mouse, keybaord, speakers, and all that **** is up to your needs like before.
hope this helps man