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ASRock X99 OC Formula/3.1 EATX LGA2011-3 Motherboard

( 3.0 Average / 1 Rating )




Part #

X99 OC Formula/3.1

Form Factor


CPU Socket



Intel X99

Memory Slots

8 x 288-pin DIMM

Memory Type

DDR4-2133 / 2400 / 2800 / 2933 / 3400

Maximum Supported Memory


RAID Support


Onboard Video


CrossFire Support


SLI Support

4-way SLI

SATA 6 Gb/s


SATA Express


Onboard Ethernet

1 x 10/100/1000 Mbps

Onboard USB 3.0 Header(s)


Completed Builds Using This Part

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Merchant Base Promo Shipping Tax Availability Total
Newegg $299.99 -$50.00 +$3.99 s/h In stock $253.98
$50.00 mail-in rebate
SuperBiiz $299.99 $299.99+
Amazon $424.71 +$6.99 s/h In stock $431.70
( 3 new from $420.45. Last updated 45 minutes ago. )
* Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon.com at the time of purchase will apply to the purchase of this product.

Price History (Excluding Tax & Combo Deals) History:


draginol 32 points 12 months ago
from completed build Game Developer 2016

Not loving this motherboard. First, it's slightly longer than normal causing it to not fit ideally in standard cases.

Secondly, take notice of the first PCI Express slot. You have to put your video card there and because of how big their SATA mdules are at the end there and their placement, many full size cards cannot fit.

Fourth, their first PC Express slow is also very very close to the memory and CPU modules to the point that it's very difficult to fit large video cards in it.

Fifth, it doesn't operate until you have a CPU in it. What I mean by that there is no indication (not even an LED) that the board is working until you place a CPU in it. Normally, I meticulous test each component as I add it in. In this case, I had to just rely on faith that the motherboard was fine (it was) until I put the CPU in. But what if I had had a bad CPU? I wouldn't know if it were the MB or the CPU.