This motherboard looks quite good in the nude.
Haswell-E CPUs only require a single input VRM to supply power to the internal VRM. In this case, GIGABYTE has used a true 6 phase VRM utilizing some of the highest power density components available on the market. The inductors support 76A saturation current each, and the capacitors are custom-made 10K polymers.
The PWM is International Rectifier's latest fully digital high-performance PWM. The IR2580 supports up to 8 phases, but only 6 are used in this case. Each phase uses an IR3556 PowIRstage, which supports up to 50A at 10W. This VRM configuration isn't unique to the X99P-SLI, a lot of other GIGABYTE X99 motherboards use the same components that have been proven to work well.
X99 requires two sets of two memory VRMs. The main DDR4 voltage and the VPP rail must come from VRs, and each set of four DIMMs gets a set of VRs. GIGABYTE has chosen to use an IR3570 fully digital 3+2 phase PWM along with two IR3553 40A power stages for the main voltage and a single IR3553 for the VPP. This power configuration is used for each set of DIMMs.
The extra pins in the socket that improve overclocking provide extra power and ground. GIGABYTE uses nine RT9018 linear regulators in an array controlled by an IT8792E embedded controller to provide power to these extra pins. You can control some of these voltages through the UEFI, and they only appear with the CPU Mode switch is in position 2.
PRICING: You can find the GIGABYTE X99P-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 X99P-SLI (Intel X99) Motherboard retails for $250 at Amazon.
United Kingdom: The GIGABYTE X99P-SLI (Intel X99) Motherboard retails for £217 at Amazon UK.
- Page 1 [Introduction, Specifications, and Pricing]
- Page 2 [Packaging and X99P-SLI Overview]
- Page 3 [GIGABYTE X99P-SLI Circuit Analysis]
- Page 4 [GIGABYTE X99P-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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