KFA2 uses the board of the GTX 1070 EX for the GTX 1070 Ti EX in the current revision. The component assembly has thus not changed as much as the actual board layout. This does not have to be a disadvantage, because this solution had already proved quite good.
KFA2 relies on uPI Semiconductor Corp’s P9511 as a PWM controller for the five GPU phases. The two phases for storage are controlled by a smaller dual-channel buck controller. All of the 5+2 phases rely on a MDU1514 from MagnaChip on the high-side, as well as two MDU1511 from MagnaChip on the low-side. Each MDU1514 is controlled by an uP1962 as a gate driver.
The back is largely free of larger active components. The voltage converter range looks very tidy and here also the thick thermal pad, which actively includes the backplate in the cooling.
GPU Power Supply |
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| PWM Controller | uP9511 UPI Semiconductor 8-Phase PWM Controller |
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| Gate Driver | uP1962 UPI Semiconductor Gate Driver |
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| VRM High Side | MDU1514 MagnaChip Trench N-Channel MOSFET |
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| VRM Low Side | 2x MDU1511 MagnaChip Trench N-Channel MOSFET |
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| Coils | Encapsulated Ferrite Choke 22 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 High-Side |
MDU1514 MagnaChip Trench N-Channel MOSFET |
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| VRM Low-Side | 2x MDU1511 MagnaChip Trench N-Channel MOSFET |
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| Coils | Encapsulated Ferrite Choke 36nH |
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Other components |
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| Monitoring | INA3221 Monitoring Chip Currents, voltages |
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| Bios | 25U4033E EEPROM BIOS |
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| Entrance Area |
Shunt on 8-pin, 6-pin and motherboard supply connector |  |
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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