GPUs Hardware Reviews

Always stay cool: Sapphire RX Vega64 Nitro+ in review

Sapphire took its time, which certainly did not harm the whole project. While some competitors have already scattered PVT samples, i.e. the small series, among the media before the start of the actual mass production, S... Board layout Sapphire differs significantly from AMD's reference design when designing the board. This even makes sense in many places, as the cooling has been optimized and is in the foreground. Due to the elimination of the external spokes... Important preliminary remark In some games we were able to register the phenomenon that the nominally faster Sapphire RX Vega64 Nitro+ fell behind the reference card of the RX Vega. However, that this is not a measurement error or even ... Results in WQHD (2560 x 1440 Pixel) Breathe in sapphires, because the much cooler card now (as expected) not only has the reference card fully under control, but also scores above all with the frame times and thus also the minimum frame rates. You... Results in WQHD (2560 x 1440 Pixel) Although Destiny 2 is actually a DirectX-11-based game, which should be more the GeForce cards, AMD's Vega cards can stand up to their GeForce competitors. The Sapphire RX V... Results in WQHD (2560 x 1440 Pixel) Now the picture returns, because the Sapphire card is slightly slowed down (obviously by the driver), which makes it just behind the reference card. But you don't have the GeForce cards... Results in WQHD (2560 x 1440 Pixel) Doom and Volcano are not anything that could shake the RX Vega64. Here, the Sapphire RX Vega64 Nitro+ is again, as expected, in front of the nominally weaker reference card, although not quite as clear as... Results in WQHD (2560 x 1440 Pixel) Even if the RX Vega64 has to be sorted just behind Nvidia's GeForce GTX 1080, the hierarchy within the AMD guild remains consistent. The Sapphire card is in front of the reference model, if only breathless... Results in WQHD (2560 x 1440 Pixel) All three interesting cards are in fact equal, with the Sapphire card surprisingly pulling the shortest in this trio. Driver optimizations shouldn't really come into play here ... Results in WQHD (2560 x 1440 Pixel) If one had to name a prime example of the advantage of a board partner card, then this game, at least in WQHD, would probably be a really good candidate. Despite DirectX11, you have the GeForce GTX 10...results in WQHD (2560 x 1440 pixels) All relevant cards are very close together, with the Sapphire RX Vega64 Nitro+ leading the upper-middle-class trio as expected. However, the lead is very close. Results in U... Power consumption at different loads The power consumption in the gaming loop is at the measured approx. 327 watts well above the 300 watt mark and thus also above what was measured in the reference model. For this there is the more constant leis... Overclocking Due to the good cooler, the limits of this map are well above what the reference map can do and even comes close in places to the water-cooled conversions. But more than what we have achieved is hardly anything more ... 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 designed by a rie... Summary Since we have not been able to definitively clarify the question of the drivers and some of the performance disadvantages of the board partner cards compared to the reference at this point, we leave this point out of un...

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.

Sapphire has black coated the backplate inside, so that the radiated heat is better absorbed and a heat build-up is counteracted. On the rear, all doubler chips, the gate driver of the memory voltage converter, as well as the PWM controller are actively cooled using thermal pads.

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.

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About the author

Igor Wallossek

Editor-in-chief and name-giver of igor'sLAB as the content successor of Tom's Hardware Germany, whose license was returned in June 2019 in order to better meet the qualitative demands of web content and challenges of new media such as YouTube with its own channel.

Computer nerd since 1983, audio freak since 1979 and pretty much open to anything with a plug or battery for over 50 years.

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