Slow processor MBP 17 inch i7

Question

long story: in the last 6 months, i have had 3 MBP 17inch i7 laptops, each one has been as slow and lethargic as the other, 2 of them with logic board issues, and none of them have been even close to the performance ability of my previous (2007) MBP 17inch model. that computer i had 3 years,  their 1.66 model which i upRammed to 4GB max, and later updated to a 7200rpm HD, and i have to say i ran it into the ground, working it in all conditions, almost 365 days a year, always using multiple programs at one time (usually about 10-12), including processor-sapping ones like photoshop CS5, capture one, and firefox (with usually about 20-30 windows open), and only restarting about 1 time per month or 3 weeks or so, and it was solid, and dependable,  and never blinked, and never crashed. in 3.5 years, i had the logic board replaced 2x, to be expected considering the thrashing i gave it, but other than that, it was a beast. those were the days :-/
this new model , for me, is a basket-case. the first model from B&H NY arrived (in brazil) with a faulty logic board, which was obvious from the beginning as it ran like a dog, was very slow, and had classic collage patterns appearing on the screen sometimes when i changed between images or programs.  i took it to Apple in london a few weeks later and they replaced it immediately, agreeing that the logic board was indeed stuffed. 2nd model, ran equally as slowly, consulted apple UK on numerous occasions via genius bar, and the service was great, and every attempt was made to speed things up, including complete manual reinstall (2x) of all my data and programs (leaving behind all unnecessary library files and possible problem-causing data), removing caches, disk warrier, disc utility, hardware tests, creating new user accounts, etc etc, but nothing, it still ran terribly slowly, and i documented many occasions on video to show them, where after only hours of use, or an increase in room temp, or opening 2 or 3 processor-intensive programs at once would send it into snail mode and render it almost useless unless i restarted it. and these are program crashes which i have never experienced on apple, and im talking about generic programs too, like text edit, safari, itunes etc, not just the imported ones like capture one or CS5......
so now they replced the 2nd one, and now im on the 3rd one.....same things. crashes, and totally unusable processor speeds. ive had this 2 months, and  after experiencing the same problems again from the start, i requested that they install the maximum RAM to 8GB for me, which they did, and while the performance is alot better, over the last 6 weeks it has degenrated back to about 60% how it was in the beginning. im in NY right now and the last few days have been warm, and this computer gets so hot, so quickly, and i dont even really hear the fans going inside, and that has added to the slow speed too. if i dont have  a  fan pointing at it, it just acts like a potato. and one thing i do notice, is that while im processing images in capture One (from RAW to tiff), the computer is rendered un-usable, so clearly this is a processor issue. processor monitoring by apple hasnt revealed anying out of the ordinary. so 3 geniuses, 3 laptops, and 6 months later, im still back at Atari speed and am now having logic board issues with this one too, where the collage pattern is coming back (ie. if i have 8 programs open, the screen will momentarily appear as a collage of all those 8 programs for 1/2 second, broken into hundreds of small squares, like an piece of art, either when i flick from one picture to another, or one program to another).
help. :-/ any ideas?

Answer 1

Talk to VirtualBox, they  have a full version with enterprise features that may enable VT-x.
Need I mention that Apple is a consumer products company?