Board analysis and power supply
The card has the same multi-layer PCB without the more complex backdrill process as the GeForce RTX 3070 and 3060 Ti Gaming X Trio and thus also remains quite long. The type of power supply is similar to Turing and again the main power supply is not divided into two parts. MSVDD is therefore omitted and only NVVDD remains. It stands for the traditional core voltage, which is what we like to call GPU voltage. Here there are a total of 7 individual phases (a maximum of 11 would be possible), which are provided by an NCP81610 from ON Semi on the rear. This is a digital PWM controller with VID interface, compatible with NVIDIA’s Open VReg specification.
These 7 phases are each fitted with ON Semi’s slightly cheaper DRMOS NCP302045 (75 amps max), which do not allow true MOSFET DCR, but do offer temperature protection circuitry and a readout output. The voltage range of NVVDD is between 0.7 and 1.2 volts maximum, whereby the maximum value can never be reached by the end user without special firmware and software.
For the more frugal GDDR6 memory (FBVDDQ), NVIDIA uses a simple step-down converter and discrete placement, again using simpler dual N-channel MOSFETs instead of PowerStages (front panel). So you find two quite cheap pairs of one PK616BA and PK698SA each from UNIC Semi on the board. But they are also quite sufficient.
For input smoothing, a coil per 8-pin plug with 330 mH is used behind a shunt. Both connectors are internally routed only as one single rail, and for the PEG motherboard slot (on the back) we can found the same. The voltage drop of the shunt is used to measure the flowing currents. A uS5650Q from UPI is used for this (back side). You can also see the six 2GB GDDR6 memory modules with Samsung’s 16Gbps. That’s about as exciting as it gets.
The following two pictures show the mentioned components in detail and also point out the possible silent mode of a dual BIOS which is not implemented here.
Cooler and disassembly
The front is dominated by the three 9.2 mm fans with 10 rotor blades each, which act quite quietly and correspond to those on the other Trio models. There are no more special features to observe from above for the time being.
The disassembly is simple. After unscrewing the graphene backplate and GPU cross, the cooler can also be removed quite easily. All you have to do is disconnect the fan cables and the RGB lifelines. The extremely thick, very soft pads on the memory modules and the VRM ensure that even any manufacturing tolerances of the package of up to 0.5 mm in height can be easily compensated. Caution is certainly not the worst advisor here with MS.
We see a total of six nickel-plated 6 mm heatpipes made of copper composite material, which were ground above the GPU as a heatsink (DHT principle). The memory is cooled by the thick pads, the voltage converter cooler and the coils too. In the middle left we also see a pad strip for the 4 MOSFETs of the power supply for the memory.
Above the PCB is another stabilizing frame that holds the top edge together and attaches to the slot bezel.
The cooler for the voltage converters is quite small and is thermally connected to the main cooler by means of a pad. With the low speeds of the fans certainly not the worst idea.
On the back side you can find a backplate made of graphene, which also cools the bottom side of VRM, GPU and memory.
- 1 - Introduction, technical data and test system
- 2 - Teardown, PCB and cooler in detail
- 3 - Gaming Performance Full-HD
- 4 - Gaming Performance WQHD
- 5 - Details: Frames per Second (Curve)
- 6 - Details: Percentiles (Curve)
- 7 - Details: Frame Times (Curve)
- 8 - Details: Frame Times (Bar)
- 9 - Details: Variances (Bar)
- 10 - Studio Applications
- 11 -
- 12 - Power Cinsumption, Transients and PSU recommendation
- 13 - Temperatures, clock rate and infrared
- 14 - Fan speed and noise
- 15 - NVIDIA Broadcast - more than a gimmick?
- 16 - Summary, features and conlusion
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