Talk about disappointed. I really thought as we throw in some more video cards, let those lanes breathe a bit and send the cards to work, we'd start to see some more positive results for AMD. If some of the numbers looked like 300 FPS on the 2600k and 200 FPS on the FX-8150, we'd say "Sure, there's a big difference, but the numbers are so high it's irrelevant really."
The problem is, when we see a wall in Mafia II at 73 FPS verses 123 FPS on the 2600k, even 87 FPS under Metro 2033 verses 108 FPS - as we see a push for these 1920 x 1080 120Hz monitors, with V-Sync on, the game play is just so smooth at 120 FPS. Any gamer that uses a 120Hz monitor will tell you that there's a clear difference over 60Hz ones and that's not good for AMD.
We also understand that the 2600k has got 440MHz on the FX-8150, but like we've said already, if you're going for this kind of setup, you're going to run the CPU at the maximum you can. For 2600k users with something like a Corsair H100, that means over 5GHz with little drama, while for FX-8150 users, it's a few hundred MHz shy of 5GHz.
I walk away from this going, "why do we even have boards with more than two PCIe x16 slots on it?" - That's really disappointing. It's sad for AMD that the best machine for someone to install three HD 6970s into isn't an AMD based one, by a long way.
The only thing you can talk about is the price. The 2600k comes in at $314.99 US while the FX-8150 comes in at $279.99 US. That's a $35 US difference. It's not much, and it's certainly not enough to stop you from buying one board over another. The motherboard department is a bit different; to make use of three cards you're going to want to go down the path of a NF200 equipped board.
The Maximus IV Extreme-Z is going to set you back $349.99 US while the Crosshair V Formula will cost you $120 US less at $229.99 US. The difference between the two setups is $155 US and that's a decent chunk of change. It's probably not so much when you're talking about buying three video cards, but if you are buying two, the price difference is the same if you stick with an NF200 board.
The thing is, though, move to a FX-6100 and the gap becomes $245 US and that's some serious money now. Especially when talking a two card setup. After all this today, though, it really just reaffirms my thoughts on the way AMD have handled this launch. We need that FX-6100!