Gaming GPUs Hardware Reviews

Gainward RTX 2080 Phantom GLH in review – Reason card behind bars | igorsLAB

Tear Down and Board Analysis

Gainward relies on a true own design for this map from the very beginning, but takes over some layout details in the power supply from the reference design. The two ATX power supply connectors are not a special feature. These, like the 12V rail of the motherboard slot, have been provided with a 20A fuse.

Thus, two real rails lead from the sockets to the board. These two rails, as well as the power supply from the motherboard slot, were each provided with a 1-H coil for smoothing possible spikes and each carry a separate shunt for monitoring the current flow.

Let's start with the most interesting part! The new uP9512P is used as an 8-phase PWM controller specifically designed to provide high-precision output voltage systems for the latest generation of GPUs. The uP9512P has programmable output voltage and active voltage positioning functions to adjust the output voltage depending on the load current, so that it is optimally positioned for a good load current transition.

The uP9512 supports NVIDIA Open Voltage Regulator Type 4i+ with PWMVID function. The PWMVID input is buffered and filtered to create a very accurate reference voltage. The output voltage is then precisely controlled on the reference input. The integrated SMBus interface offers enough flexibility to optimize performance and efficiency and also to connect the appropriate software. The controller also supports new Smart Power Stage chips (PLCs). Appropriate PLC then provide very accurate information about e.g. currents (IMON) and temperatures (TMON).

One feature of the uP9512P is the direct parallel connection of several voltage converter circuits without the usual doublers, since due to the necessary direct communication with the PLC no doubler chips can be used. We count a total of 10 voltage converter circuits for the GPU, which would not make sense as single phases. In the simplest of cases, it would only be five real phases, which would also make no sense. However, since you rely on a neat 8-phase design, two phases are double-connected and four more are easy. The two phases for memory are generated by another uP9512P in 2-phase mode.

If you would like to find out more details about this type of power supply and the improvements at Turing, please refer to our Investigative Article "Nvidia GeForce RTX 2080 Ti – Internal Details on Power Supply, Deviating Components and Where the Spikes which is always worth reading. There you will also learn more about the new Smart Power Stages, which replace the traditional, individual VRMs. The following table contains the most important components:

GPU Power Supply

PWM Controller uP9512P
UPI Semiconductor
Gate Driver not needed
Vrm 10x FDMF 3170
ON Semiconductor
Smart Power Stage
Coils 10x "Magic" Choke
220 mH Ferrite Choke

Memory and power supply

Modules MT61K256M32
8x 8GB GDDR6 SGRAM Modules
2 Channels x 256 Meg x 16 I/O
2 Channels x 512 Meg x 8 I/O
PWM Controller uP19512P
UPI Semiconductor
2 phases
Vrm 2x FDMF 3170
ON Semiconductor
Smart Power Stage
2x "Magic" Choke
470 mH Ferrite Choke

Other components

Controller HT32F52241
8-bit ARM Processor, RGB, Embedded Controller
Bios 2x 25WP080
DUAL BIOS Solution
Switch DIP (BIOS Switch)
Shunts 1x Shunt per 12v notes (3)
Coils 1x coil (smoothing) per 12V rail (3)
Backups 3x 20 Ampere (12V Rails)

More details

– 2x 8-pin PCI-Express connectors for power supply
– Filter coils in the entrance area

Cooler and backplate in detail

The radiator design does not contain any secrets. Two slat areas sit on a massive heat sink that sits with a copper plate on the GPU, the circumferential metal frame of the radiator construction provides an active cooling of the memory by means of intermediate thermal pads.

A total of 5 thick 8 mm heatpipe then distributes the waste heat to the cooling fins, four of which transport the waste heat along the side to the radiator end, while a heat pipe around the outside of the cooling block above the GPU. Gainward uses a classic fan arrangement with three 8.5cm fans. We can see how well this works.

The brushed backplate made of aluminium indirectly cools the storage via thermal pads, the pads for the VRM would have been saved better, which would certainly have benefited the storage.

Cooling system at a glance
Type of cooler: Air
Heatsink: Copper heat sink, GPU and voltage converter for THE GPU
Cooling fins: Aluminum, horizontal alignment
Heatpipes 5x 8mm copper composite, non-nickel-plated
VRM cooling: 10 GPU VRM via built-in heat sink
2 Memory VRM via built-in heat sink
RAM cooling via heatsink frame
Fan: 3x 8.5 cm fan, 15 rotor blades
Only BIOS 2 is semi-passively controlled, otherwise 800 rpm
Backplate Aluminum
Cooling function

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About the author

Igor Wallossek

Editor-in-chief and name-giver of igor'sLAB as the content successor of Tom's Hardware Germany, whose license was returned in June 2019 in order to better meet the qualitative demands of web content and challenges of new media such as YouTube with its own channel.

Computer nerd since 1983, audio freak since 1979 and pretty much open to anything with a plug or battery for over 50 years.

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