Almost all of these comments are rather irrelevant, the 198F temps will not be reached with normal use{Heavy Gaming} and over-clocked. {as said in the reviews} my model has not only hit around 170F which is fine but has played every game i have thrown at it [Games played in ultra and 2k resolution.] As for my screen, it did have a little blemish on the bottom left corner, However I have found that it will not effect the colors. as for PWM dimming, id get get over it. older monitors are the worst in regards to this area of spec. you will have to spend lots of time every day to actually burn your eyes with more current screens/monitors, and as the tests that have been done. Otherwise, it is also irrelevant because the refresh rates of todays monitors have improved. Just like its irrelevant that cell phones & WIFI emit radiation, because it has been under standardized testing & development to lower the Radiation count. Id have to say, the screen is rather too dim to go outside with it all. As said above. At any rate, I have no complaints with the Y50-70, and my older Y510p-sli. It is one of the fastest machines for the price. Don't let all these negative trolls that didn't buy the product influence your purchase. BTW removing the back cover dose not void the warranty, Lenovo has trust in the "end user" to do maintenance inside, so no you will not void a warranty removing the SSD/HDD, or ram ETC. Always RTM {Read the Manual}.
Also, this site is a really great for a reference site, so stop trolling on it. My Y50-70 is a non-touch, and i put in gskill ripjaws 16Gb 12000 ram and helped speed up things considerably in benchmark tests, the only defect on my Lenovo is the corner of my screen is a bit blemished but not visable with images on screen. If you really had problems with your Lenovo, send it in to Lenovo trusted shop{not really}, then have them reference you to customer care, talk to crystal, she was actually VERY helpful in regards of replaceing my fried Y510p sli with the y50-70. Honestly though i had to wait a month and a few days to get my replacement, and you also get a warranty with your replacement and can upgrade that warranty at any time[within 365~days]. As far as improvements, I would have to say the whole laptop is a great improvement from the predecessor Y510p-sli. Im not saying that this laptop is the best in the world, ha! Im just saying that it is actually a good moderate level laptop for gaming that happens to have high benchmarks in CPU/GPU [Not desktop good} but will play most newest games rather well if settings are correct. My added ram helped alot and the Samsung SSD is a nice SSD but not the best by all means. It has its top reading around 500MB/s or ~8.44GB/Min however you will not see those high speeds often {because there is no reason for data to read and write that fast yet.} P.S. Love the site. It helps to reference what i am working on when repairing other laptops and information. I can find out what component exactly is inside with most full reviews, and the statistics help referencing systems to other of same model conditions. EQR