I've used this laptop for almost a year. The Core i7 is hot like f***, at 71 degrees Celsius under full load, although that's only a 15W Haswell. Even my 65W Sandy Bridge using the stock cooler is even cooler at 69 degrees Celsius, and I've touched nothing inside the case since I built it. Thus, the WiFi is an absolute joke. on my PC, I bought a $8 dollars 4dBi USB WiFi adapter, and an $11 5 dBi one for my laptop, and when I am gaming, calling my brother via Skype, doing homework, the one on the PC still outperforms its opponent. Moreover, a week after I optimized the battery life, I did homework and touched nothing but Word 2010 and the keyboard (not even the mouse), switched to Power Saver mode and it only held for 4 hours. The thing I hate the most is about the slow hard drive, a minute after I started booting up my laptop I can't even start Google Chrome. Service tag is 9QGG602. Brand new, not refurbished, not second hand