Disassembly and cooling solution
If you take the card apart, the first thing you notice is the large and very flat vapor chamber. The chamber is stabilized and held by an attached mounting plate, which cools the RAM components on the one hand and is screwed to the PCB on the other. A total of 4 heat pipes, two with an 8 mm diameter and two others with a 6 mm diameter, take care of the transport to the aluminum cooling fins.
If you look at the circuit board, you’ll notice the lush VRM cooling. An aluminum strut below the fins additionally rests on the VRM cooler bolted to the PCB.
If we now place the cooler and PCB back on top of each other in a picture montage, we can see the individual contact surfaces and the areas with an air supply from above through the fins:
The RAM installed on the back of the board is cooled by the mounted backplate. All the thermal pads used are relatively thick and very soft.
The backplate has an insulating, transparent foil overlay that has cutouts where the thermal pads are located.
On the back, we can see the dual components, which also include the Black Diamond chokes used.
The RAM in this card comes from Hynix and can also handle clock rates of 1600 MHz stably.
Sapphire uses an 8 + 1 + 1 design for voltage regulation, which is sensibly called “LethalPower Suite”. Eight phases supply the GPU, the rest is used for RAM. Under the small blue lid above the eight-phase circuitry are a number of voltage control points, which might be interesting for extreme overclockers.
Double-sided Black Diamond chokes and MOSFETs with International Rectifier’s DirectFET® technology are said to reduce operating temperatures under load well below 100°C.
The rest is supposed to be taken care of by the many heat sinks installed. Good to see in the picture below: the software-based CHIL voltage controller and the two 8-PIN connectors.
Last but not least, the button for those in a hurry is shown in the picture. The corresponding function is described on the next page.
- 1 - Einführung und Übersicht
- 2 - Unboxing und Features
- 3 - Platine, Kühlsystem und Stromversorgung
- 4 - Taktraten und der Lethal Boost
- 5 - Takt und Leistungsaufnahme bei Vollast
- 6 - Takt und Leistungsaufnahme beim Gaming
- 7 - Temperaturen und Lüfterdrehzahlen
- 8 - Lautstärkevergleiche im Video
- 9 - Wir bauen ein Eyefinity-System
- 10 - Eyefinity 6 und Benchmarkergebnisse
- 11 - Eyefinity 4 und Benchmarkergebnisse
- 12 - Zusammenfassung und Fazit
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