New build for gaming and video encoding

I've recently built a similar rig on a much tighter budget and have a bit of an input:
*yes SSD, 120GB or more depending on the budget; something like the Agility3 120 can be found below 100$
*minimum 2x4GB; some say RAM is cheap and 4x4GB is a good idea to future-proof, but in the next year or so it doesn't look like RAM prices are going to skyrocket anyway so you can upgrade down the road
*the GPU depends on many things. My budget being much smaller I got a HD5770 since it is as fast in Adobe CS as any other discrete GPU and the games are being played @low res. For encoding I've seen an article (at TR I think) that GPU encoding is poor; for games the 7850 is evenly matched with the 560Ti and the 7850 needs only one 6pin PCIe connector and consumes less. If the budget for the GPU is 200$ I'd pick the 7850, it it's 300$ I'd get the 660Ti.
*for encoding even a 12 core can be 100% used, so get the fastest you can. Keep an eye out for offers for the 2600K, it is quite a bit faster encoder than the 3570 and a tiny bit slower than the 3770K.

My espagnol is too rusty for a hw site, hope this helps

It should definitely be worth it to get the i7 2600K for encoding, plus they overclock really well. You should be able to bump it up to at least 3.8Ghz with minimal work.

I've always heard from my encoding friends that ram is important as well so I would get 16GB of RAM if it were me. Pretty much any brand will do, just get 1600 from the cheapest company.

If gaming is second in priority then I would get 7850 (should overclock nicely).

SSD is a maybe. Do the encoded movies need to be stored indefinitely? If they do then I would get a bigger hard drive or multiple 1TB drives to store them and not get an SSD. If he wants absolute speed though an SSD is a must.

All the links go to that site, thank god for Google Translate.

150GB video is pretty steep, I'd say do whatever you can to fit a 3770k into that build. Or a 2600k as others have mentioned, since a 3770k doesn't yield incredible gains over the previous generation 4c/8t. If he needs more ram for the build, it's pretty easy to add more later if need actually be. Not so easy to change the processor to a better one (well, easy, but not convenient).

150GB a week is too much for an SSD.
Get a couple of 1TB 7200rpm drives.
16GB ram and 3770k or faster cpu.

For the videocard, get a GT240 or HD5670 so the onboard video doesnt eat ram and he can use anti-aliasing on videos.
Most video rendering programs barely take use of videocards to warrant spending more than $50 on them.

Here is my try at it: http://pcpartpicker.com/p/hUge

It comes to just over 1000EUR, so it is over budget, but I went overboard in some places, and it would certainly be possible to choose to modify the build in certain places. I would personally keep the i7-3770K, because skimping on the CPU is going to make encoding videos extremely painful to wait for.

The graphics card I picked is basically the least I would want to be stuck with myself. I would suggest going for an EVGA GTX 570 or 670 (the 500 series actually benchmarks better than the 600 series for some models, so saving money by choosing a 570 or 580 is a great idea, though the 600 series may offer power savings over the 500s). I don't know anything about AMD/ATI's graphics cards. I always go with NVidia cards because their driver programmers are far better than ATI's programmers were. AMD may have fixed that problem since they bought ATI, but I haven't tried them out since AMD made that purchase, so you would have to ask someone else about AMD's GPUs if you want to go that route.

If he is dealing with videos that large, then I doubt you'll be able to fit a big enough solid state drive within his budget. I would suggest getting a couple of 1TB 7200rpm hard drives, and when it comes to hard drives, Western Digital will give you the best value. They offer a 5-year warranty on their Caviar Black line, and those drives perform really well for spinning disks. If you are planning on upgrading to any serious RAID configuration, then you should trade in the Caviar Black drives for their RE4 drives. The RE4 drives have error correction parameters set that cause them to perform better than normal consumer drives in RAID configurations, and they carry the same 5-year warranty as the Caviar Black series drives.

The case I chose was a random pick from cases that I've seen recently that I thought looked cool. That is all it is. A case is a very personal sort of choice, and I would really just leave that up to you and your friend. A lot of money can be saved right there.

8GB of RAM is basically the new "enough". I, personally, would just start off with 16GB of RAM, but I do stuff like run multiple 4GB virtual machines, so I need a bunch of RAM to do that. 8GB is plenty to handle every game ever made so far, and it is enough to handle most other programs, too. Video editing is helped greatly by adding more memory, though, so he should really be trying to expand to 16GB in the future if he doesn't start out with 16GB now. I would just stick with 1600MHz to save money, and I certainly wouldn't go below 1600MHz. Most LGA 1155 motherboards have 4 DIMM slots, which is why I chose an 8GB kit that has two 4GB DIMMs. That leaves room to upgrade to 16GB later.

Anyway, you can take this and add/subtract to get closer to where you're trying to end up. I hope it helps.