The rather tidy-looking board actually does not hide any secrets. However, the board and the radiator (we will discuss this in more detail later) do not seem to have been developed for each other. The voltage converters are not located where the two holes for the VRM heat sink still existing on the radiator (right quarter of the board) would suggest. That is where a yawning void is found.
On the left side we also see the button for BIOS switching. The point was that you could have switched to a different BIOS (“Turbo”) and the planning for it was already done before Nvidia’s tough restrictions. In the end, this BIOS switchover still works, but apart from a maximum of 240 watts for the power target released by Nvidia, nothing else changes to the actual settings.
THE GPU power supply is a normal 6+2 phase design, with the GPU being used as a doubler. The uP1961 from UPI Semiconductor is used on the one hand as a gate driver for the high-side and on the other hand as a phase extension module (PEM). This PEM splits the simple PWM input and thus controls two separate voltage converters. Together with the uP9511, a 6+2 phase PWM controller from the same manufacturer, this combination also enables the ideal interleaving and current balancing of the two generated converter circuits thanks to DCR. This means that the design still has only six phases, but uses 12 voltage transformer circuits.
With this technical trick, the twelve Power-Stage chips are controlled directly. Colorful relies on the cheaper AOE6930 from Alpha & Omega, which are asymmetrical dual N-channel MOSFETs with integrated Schottky diode, which realize both the high and the low-side.
The power supply of the memory is released via an uP1666 from uPI Semiconductor, which can provide the total of two phases as a buck controller. As with the GPU, the control is applied to an AOE6930 from Alpha & Omega per phase. The necessary gate drivers already contain the uP1666, so you don’t need separate ICs. Positioning is done below the left PCI Express jack.
The back is, except for some voltage converter MOSFETs for the peripherals, largely free of larger active components. The voltage converter range seems very tidy and one has also taken the chance to actively integrate the backplate into the cooling by means of a thermal pad.
GPU Power Supply |
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|---|---|---|
| PWM Controller | uP9511 UPI Semiconductor 6+2 Phase PWM Controller |
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| Doubler / Gate Driver |
uP1961 UPI Semiconductor Gate driver IC with Phase Extension Module (PEM) |
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| Power Stage | AOE6930 Alpha & Omega Asymmetrical Dual N-Channel MOSFET Integrated Schottky Diode |
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| Coils | Encapsulated Ferrite Choke IPP (“iGame Pure Power”) 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 | uP1666 uPI Semiconductor 2-Phase Buck Controller |
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| Power Stage |
AOE6930 Alpha & Omega Asymmetrical Dual N-Channel MOSFET Integrated Schottky Diode |
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| Coils | Encapsulated Ferrite Choke IPP (“iGame Pure Power”) 33 nH |
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Other components |
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| Monitoring | INA3221 Monitoring Chip Currents, voltages |
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| Bios | 2x 25WQ040 EEPROM BIOS Dual BIOS |
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| Mcu | HT66F0185 HOLTEK A/D Flash MCU with EEPROM (8-bit RISC processor) Display and RGB |
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| Entrance Area |
Encapsulated Ferrite Choke + Shunt 3x Magic Coils Filter coils against voltage peaks 47nH and Shunt (one per 12V-Rail) |
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More details |
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| Other Features |
– 2x 8-pin PCI-Express connectors for power supply – Filter coils in the entrance area – improved coil assembly – 6 double phases for the GPU |
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