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ASRock X99 Extreme6/ac (Intel X99) Motherboard Review

By: Steven Bassiri | Socket LGA 2011 in Motherboards | Posted: Apr 11, 2015 2:15 am
TweakTown Rating: 93%Manufacturer: ASRock

Final Thoughts


The ASRock X99 Extreme6/ac is a really feature packed and well performing motherboard. Its hardware is well implemented and its workstation features such as a USB DOM, and Intel Xeon CPU and 128GB DDR4 support are unique. ASRock is also the only manufacturer who uses 12K capacitors; most others use 5, 7, or 10K. The VRM on the X99 Extreme6/ac is very strong and won't hold you back on any overclock, even with the 8-core 5960X.


VRM thermals are also pretty good and idle performance is among the best I have seen thus far. The UEFI is easy to use and the included profiles make for a good starting point if you are new to overclocking, just make sure to optimize SSD performance as it isn't optimized by default.




While the Ultra M.2 slot provided the second fastest run so far with the Samsung XP941, it does take its bandwidth from the last PCI-E 3.0 16x slot, which reduces the multi-GPU capability of the board if running 3-Way. The lack of 4-way GPU support is a bit surprising, but this motherboard is aimed more towards workstations, and ASRock offers other boards with 4-way support. At $279.99, the X99 Extreme6/ac offers great value, especially with the wireless AC module. I have tested a handful of wireless AC devices so far, and ASRock's implementation is the fastest.



PRICING: You can find the ASRock X99 EXTREME6/AC for sale below. The prices listed are valid at the time of writing, but can change at any time. Click the link to see the very latest pricing for the best deal.


United States: The ASRock X99 EXTREME6/AC retails for $323.13 at Amazon.


Australia: Find other tech and computer products like this over at PLE Computer's website.


Canada: The ASRock X99 EXTREME6/AC retails for CDN$395.33 at Amazon Canada.

Product Summary Breakdown

TweakTown award
Performance (including Overclocking)95%
Quality including Design and Build92%
General Features93%
Bundle and Packaging90%
Value for Money93%
Overall TweakTown Rating93%

The Bottom Line: Overall strong performance in memory, 3D, and IO benchmarks combined with great thermal performance proves that the ASRock X99 Extreme6/ac is one of the best performing Intel X99-based motherboards on the market.

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