Cooling system and backplate
Of course, the generated waste heat is directly related to the recorded power, for which the cooling solution is responsible for optimum dissipation. This cooling system, which is therefore almost monumental, is dominated by a huge lamella heat sink that sits above a large vapor chamber. A total of six heatpipes are used to distribute the waste heat between the chamber and the sub-areas of the cooler, which are mounted above the vapor-chamber and rest on it.
Cooling system at a glance | |
---|---|
Type of cooler: | Air |
GPU Cooling | Vapor Chamber |
Cooling fins: | Aluminum, vertical alignment narrow, partly inclined |
Heatpipes | 3x 8 mm and 3x 6 mm, copper composite, nickel-plated |
VRM cooling: | GPU and memory VRM via radiator frame |
RAM cooling | Memory cooling (HBM2 modules) via Vapor-Chamber |
Fan: | 2x 9.7 cm fan modules (10 cm opening), 9 rotor blades 1x 8.7 cm fan module (9 cm opening), 11 rotor blades semi-passive regulation |
Backplate | Aluminum Cooling function for doubler, PWM controller and VRM gate driver |
Now let's take a closer look at this cooler. In addition to the vapor chamber for the GPU and the HBM2 memory, three central 8 mm heatpipes and two external 6 mm heatpipes made of nickel-plated composite material are available for transporting waste heat from the GPU to the individual areas of the slat cooler. Responsible. In addition, there is a shorter, curved 6 mm heatpipe above the voltage converters.
What this cooler is capable of doing can confidently be described as enormous. By the way, we also see very nicely how many screws Sapphire works around the vapor-chamber. Four fasteners for the Chamber on the package and another four screws for the area of the radiator frame around the package provide a very evenly distributed load on the delicate interposer of the package.
Fan curves and noise emission ("volume")
The fan curves show that Sapphire has put on his own hand here. The semi-passive operation is done via a programmed controller, so that even if this controller has already switched the fans without voltage, the VoltiMan still displays the rotation values. This is a bit tricky and confused if you only read out the sensor values, but with an external laser measuring device the reality comes to light. Also interesting is the curve curve, which ensures that the GPU does not shoot beyond the stored 70°C target temperature.
The whole thing doesn't look much different with the stress test. In summary, the card with the three fans is doing quite well.
The card has reserves to make the fans rotate lower. It would certainly be even quieter, but in return it cost a few MHz of boost clock. We think that Sapphire offers a fairly balanced compromise from the factory.
Measurements for fans and noise emission |
|
---|---|
Fan speeds Open Benchtable Maximum |
1493 rpm |
Fan speeds Open Benchtable Average |
1485 rpm |
Fan Speeds Closed Case Maximum | 1611 rpm |
Fan Speeds Closed Case Average | 1585 rpm |
Noise emission (air) Maximum |
39.8 dB(A) |
Noise Emission (Air) Average |
39.1 dB(A) |
Noise Emission (Air) Idle | 0 dB(A) |
Sound characteristic / Hearing impression |
hardly lower frequency bearing noises light engine noise< 1 Hz moderate air/demolition noise light voltage transformer noises |
To illustrate our subjective audio impression once again, we now have a high-resolution graphic with the complete frequency spectrum of our laboratory measurement:
The 39.1 dB(A) is very good and more than acceptable for such a brutal map and the measured temperatures. It will hardly be much better, especially since we were particularly inspired by the performance in the closed housing, because in this hotbox the OC was up to 50°C.
- 1 - Einführung und Kartendetails
- 2 - Spannungsversorgung und detaillierte Platinenanalyse
- 3 - Ashes of the Singularity: Escalation (DX12)
- 4 - Battlefield 1 (DX12)
- 5 - Destiny 2
- 6 - Tom Clancy’s The Division (DirectX 12)
- 7 - Doom (Vulkan)
- 8 - Tom Clancy’s Ghost Recon Wildlands (DX11)
- 9 - Metro: Last Light Redux (DX11)
- 10 - Middle-earth: Shadow of War (DX11)
- 11 - The Witcher 3 (DX11)
- 12 - Leistungsaufnahme im Detail
- 13 - Temperaturen, Taktraten, OC und Wärmebildanalyse
- 14 - Kühlerdetails und Geräuschentwicklung
- 15 - Zusammenfassung und Fazit
Kommentieren