Gigabyte uses the board of the GTX 1070 Ti G1 Gaming for the GTX 1070 Ti G1 Gaming in the second revision. This is very interesting in that Gigabyte simply rotated the GPU by 90°, shifted the GPU's voltage converters to the left, and moved the memory to the right. Advantage of the rotary: no memory module is located between VRM and GPU or on the hot tracks. Thermally, this makes perfect sense, as we will see later.
Gigabyte relies on uPI Semiconductor Corp's P9511 as a PWM controller for the six GPU phases. The two phases for storage are controlled by a smaller dual-channel buck controller, each with a highly integrated NTMFD4901NF from ON Semiconductor
high- and low-side, as well as the Schottky diode.
The BIOS and PWM controller for the GPU shipped gigabytes to the back as well as the gate drivers of the GPU VRMs. This is where the thick thermal guide pad, which actively includes the backplate in the cooling, also applies.
GPU Power Supply |
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PWM Controller | uP9511 UPI Semiconductor 8-Phase PWM Controller |
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Gate Driver: | 58603A Gate Driver |
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VRM High Side | AON6414 Alpha & Omega N-Channel MOSFET |
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VRM Low Side | AON6508 Alpha & Omega N-Channel MOSFET |
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Coils | Magic Coils Foxconn Encapsulated Ferrite Choke 15 nH |
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Memory and power supply |
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Modules | MT51J256M32HF-80 Micron GDDR5, 8.0 Gb/s 8 Gigabit (32x 256 MBit) eight modules |
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PWM Controller | 2 phases Buck Controller Oem |
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Vrm |
NTMFD4901NF ON Semiconductor Dual N-Channel MOSFET High- and Low-Side |
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Coils | Magic Coils Foxconn Encapsulated Ferrite Choke 22nH |
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Other components |
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Monitoring | INA3221 Monitoring Chip Currents, voltages |
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Bios | Winbond 25Q40 Kynix Semiconductor EEPROM BIOS |
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Rgb Controller |
HT32F52241 Holtek 32-bit ARM Cortex M0+ |
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Entrance Area |
Coil (smoothing) and Shunt on the 8-pin Supply connection |
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More details |
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Other Features |
– 1x 8-pin PCI-Express connectors for power supply – Filter coil in the entrance area – ARM processor for RGB control |
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