If you check those screens... they have the E3 2 times in each. At stock speed and at OC speed with 3.7GHz.
They pointed out that it's a really cool headed cpu which can easily take the clock with stock cooling. That's why I thought the Z87 was actually mandatory but I should probably take another look.
The 16GB I took more as an option than an actual purchase. I do use a Ultra II SSD (120GB) for my OS now - oh that sweet booting speed was worth the €60 up front - but I am still playing with the idea to use 6GB ram as persistent ram disk... maybe... and I would profit from real HT, I guess, since I am using Linux running on VMware for uni. Shouldn't that profit from the HT quite a lot?
And according to those benchmarks, and I've seen several of those from different sources, the E3 performs easily with the higher i7s with the price of an i5. Can't see anything wrong with that and integrated GPU is rather pointless from a gamers POV, isn't it?
But please, keep the posts coming. I am not into the whole hardware deal too much and I am thankful for any advice from people who know this shit better than me...
Edit: I am using a r9 270x right now which is xfire capable. Which chipset is that? h87 or z87? Or something completely different?