Re: PCIE x 16 and x 4 vs PCIE x 8 x 8
I've read that the x4 does cause a bottleneck when you're CF is x16x4 compared to x8x8. I've also seen some benchmarks and x8x8 is usually 3-5% better. If it's worrying you that much it's mostly suggested to go for a motherboard that supports at least x8x8 CF.
Yes, it's possible to CF a 6870 and 6850. As long as it's in the same series.
There is no noticeable performance boost between RAM speeds of 1333 and 1600. It's only noticeable in benchmarks and not real world applications unless you're using software that is memory specific/intensive.
3770K | ASUS STRIX GTX 1080 | DDR3-1600 16GB | CORSAIR 650D | CORSAIR HX 850W | CORSAIR H100 | SOUND BLASTER Z | ASROCK EXTREME4 GEN3