Now we will dig deeper into the motherboard's design.
To power the input voltage rail that powers the FIVR, GIGABYTE is using a straight 8-phase voltage regulator exclusively powered by International Rectifier silicon. The inductors are the same 76A Cooper Bussman COILTRONICS FLAT-PAC high current power inductors found on GIGABYTE's earlier X99 motherboards. The capacitors are black FPCAPs; I am unsure of the hour rating, but I assume 5 or 10K.
GIGABYTE is using the latest International Rectifier (owned by Infineon) IR3580 true 8 phase digital PWM. They are also using eight IR3556; 50A fully integrated power stages that include a driver, high-side MOSFET, and low-side MOSFET in a single package. The VRM is more than capable of handling the $1700 6950X with ease. The motherboard also has extra pins in the socket that could enhance overclocking of cache and memory; these pins are powered by a special array of linear regulators located below the first 16x PCI-E slot and controlled by an IT8792E embedded controller.
Both sets of four DIMMs use identical power delivery setups. The main PWM is an IR3570 digital 3+2 phase PWM working in 2+1 phase mode. Two phases use IR3553 40A fully integrated power stages for the main DDR4 voltage, and the VPP uses a single phase IR3553.
PRICING: You can find the GIGABYTE X99-Phoenix SLI (Intel X99) Motherboard for sale below. The prices listed are valid at the time of writing, but can change at any time. Click the link below to see real-time pricing for the best deal:
United States: The GIGABYTE X99-Phoenix SLI (Intel X99) Motherboard retails for $373 at Amazon.
United Kingdom: Find other tech and computer products like this over at Amazon UK's website.
- Page 1 [Introduction, Specifications, and Pricing]
- Page 2 [Packaging and X99-Phoenix SLI Overview ]
- Page 3 [GIGABYTE X99-Phoenix SLI Circuit Analysis]
- Page 4 [GIGABYTE X99-Phoenix SLI 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]
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