Powercolor RX 5700 XT Red Devil in review – Force is mass times acceleration

1 - Einführung und Übersicht 2 - Tear Down: Platine und Kühler 3 - Benchmarks 1920 x 1080 Pixel 4 - Benchmarks 2560 x 1440 Pixel 5 - Benchmarks 3840 x 2160 Pixel 6 - Leistungsaufnahme im Detail 7 - Temperatur, Takt, Infrarot 8 - Lüfter und Lautstärke 9 - Zusammenfassung

Board layout and components

Powercolor, like AMD, uses a 7+2 phase design for the Red Devil. Who now counts ten MOSFETSs for the GPU is basically correct, but there are only 7 real phases, of which 3 phases each control 2 voltage transformer circuits in parallel, so that one gets 10 voltage converter circuits (VDDC) at the end. The well-known IR 35217 from International Rectifier controls the 10 NCP 302155 from ON Semiconductor, which are rather inexpensive dual MOSFETs that have an integrated gate driver and can therefore also be operated in parallel on this PWM controller.

In the two phases for memory (MVDD), Powercolor (like others) relies on an NCP 81022, a digital 2-phase voltage regulator, each with a slightly smaller NCP 302045, which otherwise also represents a dual MOSFET that combines high and low-side, as well as the gate driver in a package. This MOSFET, which looks like a Smart Power Stage, is also used in the voltage converters for the SoC and VDDCI.

Powercolor relies on a short PCB with very few active components on the back. A second 8-pin connector implies a high overclocking potential, but this is likely to be more appearance than being. One of the VDDC phases for the GPU is fed from the motherboard slot (PEG), the rest via the external PCIe ports.

The following table contains the most important components:

GPU Power Supply
PWM Controller	IR35217 International Rectifier 8-phase PWM controller (7 used, 3 in parallel)
Gate Driver	Integrated
Vrm	7x NCP302155 ON Semiconductor Dual-MOSFET + Driver
Coils	Encapsulated Ferrite Choke 150 mH
Memory and power supply
Modules	MT61K256M32 Micron 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	NCP81022 ON Semiconductor 2-phase used
Vrm	2x NCP302155 ON Semiconductor Dual-MOSFET + Driver
Coils	Encapsulated Ferrite Choke 330 mH
Other components
Bios	2x 25WP080 Eeprom Dual BIOS
Connectors	Input Filter, 560 mH
Mcu	F52352 Holtek ARM Processor Led
More details
Other Features	7 + 2 Phase design (10 + 2 VR circuits) 8-Pin + 6-Pin PCI-Express Power Supply

Cooler

The upper cover carries the three fan modules with the respective 9 rotor blades and 8.5 cm diameter (opening 9 cm). The underlying, two-piece slat cooler with the vertical cooling fins receives the waste heat from the nickel-plated heat sink over a total of four 6 mm and one 8 mm heat pipe. These nickel-plated heatpipes are made of copper composite material and extend almost completely over the entire bottom of the radiator except for one of the heatpipes.

The memory modules cool Powercolor via a common heat sink with the GPU and thus also directly over the cooler. For the thermal transition, thicker thermal pads are used, which serve their purpose quite well.

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The backplate does not absorb waste heat and is not integrated in terms of cooling technology, but only of a purely optical nature. This includes the backlit Red Devil logo.