BIOS Frequency & Voltage Settings
|ASRock X99 OC Formula/3.1||Fatal1ty X99 Professional/3.1|
|BIOS||P1.20 (06/01/2015)||P1.20 (06/01/2015)|
|Base Clock||96-300 MHz (0.1 MHz)||96-300 MHz (0.1 MHz)|
|CPU Multiplier||12x-120x (1x)||12x-120x (1x)|
|DRAM Data Rates||800-3200 (200/266.6 MHz)||800-3200 (200/266.6 MHz)|
|CPU Vcore||0.80-2.00V (1 mV)||0.80-2.00V (1 mV)|
|VCCIN||1.20-2.30V (10 mV)||1.20-2.30V (10 mV)|
|PCH Voltage||1.00-1.50V (25 mV)||1.00-1.50V (25 mV)|
|DRAM Voltage||1.00-1.80V (10 mV)||1.00-1.80V (10 mV)|
|CAS Latency||4-31 Cycles||4-31 Cycles|
|tRCD||5-31 Cycles||5-31 Cycles|
|tRP||5-31 Cycles||5-31 Cycles|
|tRAS||10-63 Cycles||10-63 Cycles|
The X99 OC Formula/3.1 reached the ordinary 4.40 GHz achievable by this CPU sample at 1.28V, but the Fatal1ty X99 Professional/3.1 came up a little short of that mark. Both produced extra-high DRAM clocks, both use the same PCB, and both have the same power circuitry, so it does look like there’s a little luck involved in picking a motherboard. The Rampage V Extreme/U3.1 proved its worth as a memory overclocking rig, while the 4.40 GHz that affects both it and the OC Formula 3.1 appears to be a new, reduced ceiling for our aging CPU.
We began checking bandwidth at unqualified memory data rates when we found a board that performed worse as it was overclocked. Fortunately, that’s not the case with the X99 OC Formula/3.1 or Fatal1ty X99 Professional/3.1. The top boards in this regard (Asus and MSI) were barely faster.