Board analysis and power supply
AMD has saved a bit on the PCB, which is much simpler than that of the RX 6800 and RX 6700 XT. However, well equalized hotspots are also a plus point this time, even if the very decent input filtering with a real LC filter (low-pass) is omitted and only longitudinal coils (chokes) are used. With a 35217 from International Rectifier MSI uses a rather average PWM controller, which drives the 6 phases for VDDC_GFX of the RX 6600 XT and generates the phase for VDDCR_SOC.
The rather cheap DrMOS NCP302155 from ON Semi (55 amps max.) do not offer a real MOSFET DCR, but at least a temperature protection circuit and a readout output. By the way, they are used for all controllers except SoC and VDDCI, where the smaller NCP302145 with 45A are used. The voltage range for VDDC_GFX is between 0.7 and a maximum of 1.2 volts, whereby the maximum value can never be exceeded by the end user without special firmware and software. This can be left as it is, especially since the DrMOS NCP302155, i.e. the combination of MOSFET driver, high-side and low-side MOSFET in one package, is also quite efficient and cool to work with.
In parallel, an NCP 81022N from On Semi operates for the generation of other partial voltages such as VDD_MEM and a phase for VDDCI_MEM, resulting in a total of 10 phases for the various main voltages, all of which are equipped with the same DrMOS.
For input smoothing one coil each with 330 mH is used for the 8-pin and the PEG motherboard slot. You can also see the four 2GB GDDR6 memory modules with Samsung’s 16Gbps. That’s about as exciting as it gets.
Radiator and disassembly
The front is characterized by the two 9.5 cm fans with 10 rotor blades each, which act quite quietly. There are no more special features to observe from above for the time being.
The disassembly is simple. After unscrewing the backplate and GPU screws, the cooler can also be removed quite easily. All you have to do is disconnect the fan cables and the RGB lifelines. The very soft pads on the memory modules and VRM do their job, but are not top shelf. We see a total of four 6mm nickel-plated copper composite heatpipes mounted above the GPU on the heatsink. The memory is cooled by the 1 mm thick pads from the rather cheap shelf, the voltage converters at the cooler too.
On the back side you can find a backplate made of light metal, as well as pads behind the memories and the voltage converters for a passive cooling function.
- 1 - Einführung und Testsystem
- 2 - Testsystem und Methodik
- 3 - Teardown, Platinenanalyse und Kühler
- 4 - Gaming Performance Full-HD
- 5 - Gaming Performance WQHD
- 6 - Gaming Performance DXR & FSR vs. DLSS
- 7 - Details: Frames per Second (Curve)
- 8 - Details: Percentiles (Curve)
- 9 - Details: Frame Times (Bar)
- 10 - Details: Frame Times (Curves)
- 11 - Details: Variances (Bar)
- 12 - Leistungsaufnahme und Effizienz der Einzelspiele
- 13 - Leistungsaufnahme: Übersicht & Netzteil-Empfehlung
- 14 - Temperaturen und Infrarot-Tests
- 15 - Geräuschemission / Noise
- 16 - Zusammenfassung. Features und Fazit
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