I'm not advocating the ASRock.
No, FIRST the PCIe x16 needs to be saturated currently the PCIe x8 really isn't by all but a very few GPUs.
OC'ing, I'd be out of my mind to look at ANY (1) Review or Reviewer to KNOW anything for fact. IF your plans are Stock to 4.50GHz then it's a lesser issue. Again, none of my builds or builds I do for others includes any ASRock. I realize ASUS owns ASRock, but it's a stripped-down cheaper version of its' comparable ASUS big brothers.
Sure I see people assuming and doing all sorts of oddball things and making poor 'cheap' choices -- penny wise dollar foolish. Example, I like Tom's but the ONLY reason toy see the builds you do are because of 1. Sponsors and 2. Benchmark {Quantity vs Quality}. I know many of the folks that write the Articles and what they OWN is radically different than the Articles they write. While I like the ASUS P8Z68 V-PRO I would build. assuming ASUS, the P8P67 WS Revolution 3-WAY SLI + PhysX or ASUS Maximus IV Extreme-Z.
Edit:
I remember the
GA-X58A-UD3R Tom's Pick and then I remember
returning ALL 10 after the SSD bug was discovered! After replacing all my office PC with the ASUS P6X58D-E (0) ZERO issues; oddly I wanted the P6X58D-E then I had the misfortune of reading that article. Ever since I have to see: 1. Overlapping Reviews, 2. Problems by others, 3. User feedback in forums from knowledgeable and unpaid approvals.