Thanks guys. I continue my research with your instructions.
Fillippo

>>TpwUK-Also take into account that rendering engines are starting to licence by the core - 8 cores = potentially 8 licences.<<

This is applied for 3Delight..Maxwell-VRay-Fryrender offer a single license with more nodes,this means that you buy a license then calculate your render scene with your main computer+others you have
no problems how many cores you have

All we know (mac &pc users) best and wrong things of both OS,don't want to talk about that,just talking about render and this only means power to CPU

this is a benchmark where you can see what i mean


http://randomcontrol.com/index.php?option=com_rcbench&Itemid=140&benchid=1

I had MacBookPro with winxp on it for 1900 €.

Shortly before the end of one year guaranty there was a black strip in the middle of the screen, and the CD/DVD player was defect.

They changed both but the player was still defect, and the changed it once more. After a certain time the player was defect again.

After two and a half year in the morning I had the black screen of death. I looked in the www and found, that a lot of people had the same problem.

My opinion is, that they sell midrange hardware for a very high prize.

This can be seen, when one want to make guaranty for three years. It costs 300€ more. Says everything.

For a PC notebook three years guaranty costs 60€ more.

RUdl

My Macbook developed a fault where the DVD drive would not play properly. It turned out that this was caused by two things. 1) was Apple not liking disk caddys and insisting on the sort of "suck it in" drive you get on a car stereo added to 2) most users are right handed. When you pick up the laptop, you tend to do it with your right hand, grasping it top and bottom of the DVD slot, which is the balance point. This, over time distorts the slot (because it doesn't have a caddy closing it) and prevents DVDs from loading properly. The solution was to wrench it with a wooden stick to open up the slot again. The guy at the Apple Store said it was a well known problem and they would have charged me £50 to solve it in the same way I did it myself. -1 for design then. Generally, though, the build quality of MacBooks is streets ahead of a Dell or an HP.

Apple desktops have a different problem in that you are limited to hardware sold by Apple (at a premium). Want the latest Nvidia graphics card? Forget it. OSX checks the cards for an internal signature and will not load if the card didn't come from Apple. However, a way round this is to use Windows 7 on Mac hardware, then you get Apple build quality with the flexibilty of Windows for hardware. If you are brave, you can re-flash the graphics card so OSX thinks it came from Apple.