The VRM on this board consists of 12 phases, but ASRock has further enhanced the power output of the Fatal1ty X99 Professional/3.1 by doubling up on the normal number of MOSFETs they use for their 12 phase/1300W VRM. ASRock has focused on power density by utilizing lower profile 60A inductors and more integrated phases. The output filter is made up of 8x 560uF solid 12K Nichicon capacitors at 4480uF.
The PWM controller is an Intersil ISL6379 Digitally Controlled Hybrid 6 phase PWM. There is no datasheet, but I would venture to guess that it is a 6+1 phase PWM. To get 12 phases, manufacturers must double the phase count from the PWM since there is no 12 phase PWM in production for motherboards. ASRock uses 6x Intersil ISL6611A which are phase doublers with integrated dual drivers located on the backside of the motherboard.
This saves a lot of space which is important considering the limited motherboard real-estate of the X99 platform. ASRock is using 24x FDMS3668S which are dual N-Channel MOSFETs from Fairchild Semiconductor in the PowerTrench package. They have very good thermal and current ratings at 13A/18A (high/low side) at only 2.5W, which is excellent.
Each memory VRM is like a two phase version of the CPU VRM, using the same ISL6379 PWM and the same dual N-Channel PowerTrench MOSFETs for a total of three ISL6379 and 16 dual MOSFETs on the board. This is just one of two identical memory VRMs on this board.
The memory DIMM's main MOSFETs need drivers and four tiny ones are found on the back of the board. The drivers are Intersil ISL6208. An MPS MPQ8632 is used for the VPP power for each set of the four DIMMs.
PRICING: You can find products similar to this one for sale below.
United States: Find other tech and computer products like this over at Amazon's website.
United Kingdom: Find other tech and computer products like this over at Amazon UK's website.
Canada: Find other tech and computer products like this over at Amazon Canada's website.
- Page 1 [Introduction, Specifications, and Pricing]
- Page 2 [Packaging and the Fatal1ty X99 Professional/3.1]
- Page 3 [Fatal1ty X99 Professional/3.1 Circuit Analysis]
- Page 4 [Fatal1ty X99 Professional/3.1 Circuit Analysis Continued]
- Page 5 [BIOS and Software]
- Page 6 [Test System Setup]
- Page 7 [Overclocking]
- Page 8 [CPU, Memory, and System Benchmarks]
- Page 9 [System IO Benchmarks]
- Page 10 [Thermal Imaging and Power Consumption]
- Page 11 [What's Hot, What's Not & Final Thoughts]
Recommended for You
- We at TweakTown openly invite the companies who provide us with review samples / who are mentioned or discussed to express their opinion of our content. If any company representative wishes to respond, we will publish the response here.
Latest News Posts
- NVIDIA TITAN V teardown reveals beautiful GV100 GPU
- Litecoin doubles in price to $317, isn't slowing down at all
- Ethereum reaches a new record high price of $637
- Hideo Kojima talks new Death Stranding details
- Bungie keeps Destiny 1 era rotating content lockout
- Mionix Wei Ice Cream Mechanical Gaming Keyboard Review
- Buy Samsung Galaxy S8 Plus New 64GB SM-G955UZKAXAA $824
- Unable to use all 3 M.2's for RAID 0
- AMD Radeon Software Adrenalin Edition Drivers Detailed
- 2 GPU on AB350 Gaming K4
- Toshiba Memory America Unveils UFS Devices Utilizing 64-Layer, 3D Flash Memory
- ASUS Announces GeForce GTX 1070 Ti Series Gaming Graphics Cards
- ASUS Announces ASUS Hangouts Meet Hardware Kit
- Colorful Announces iGame GeForce GTX 1070 Ti Vulcan X Top
- Gainward Announces its GeForce GTX 1070 Ti Series