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A few months after the launch of the Surface Book 2, Microsoft brings the larger and more capable variant with a inch screen over to Germany. Besides a larger screen, when compared to the Surface Book 2 13, which we already reviewed , what really differentiates the two models is the dedicated graphics card in the keyboard dock of the inch model.

The processor is again a modern quad-core ULV chip from Intel, which, in this case, is not cooled passively. Here, it is cooled with a small dedicated fan. After the launch in the USA, there were reports about problems with the power management under high load. We encountered similar problems in our review of the smaller Surface Book 2 Microsoft supplies both versions with the same AC adapter 95 W according to Microsoft, W in both of our review devices , which does not bode well at all, considering the higher energy demands of the GTX But of course, we will still examine in great detail what kind of impact this has on the energy management.

Right now, there are three different versions of the Surface Book 2 15, each of them differentiated by the amount of storage space. The Surface Book 2 is a very versatile device, and, therefore, it is hard to categorize. This applies more to the inch model than the small brother, because the GTX is mainly reserved for gaming or very powerful multimedia notebooks.

In the convertible space, there are really no alternatives to speak of, either in terms of price or performance. We will also compare the smaller Surface Book 2 13 with the inch model. Below you will find our first review results. As usual, the rest is to follow in the next couple of days.

Just like with the smaller brother, what we have here is a capacitive touchscreen with a aspect ratio. In order to keep the pixel density at approximately the same level vs. Despite the high brightness, the brightness distribution is quite uniform; however you can still see the screen bleeding around the edges when the screen is displaying pure black.

This was better in the smaller model. The rest of our display measurements are also quite good. Above all, the high contrast ratio leads to very vivid colors and, subjectively, the screen leaves no room for complaint. Nevertheless, the frequency of over 21 kHz is extremely high, which is why, this should not cause any trouble for susceptible individuals.

There should be no flickering or PWM above this brightness setting. The frequency of Hz is quite high, so most users sensitive to PWM should not notice any flickering. If PWM was detected, an average of minimum: 5 – maximum: Hz was measured. Microsoft calibrates each Surface Book 2 individually, and the average DeltaE deviations against the sRGB color space are in good order, right out of the box.

The grayscale reproduction is very good, although there is some room for improvement in terms of the color accuracy. Here, the smaller Surface Book 2 performed better as well. Since the profile comes preloaded on every Surface Book 2 device we have adjusted the records in our database accordingly. Our calibration attempts failed for some reason, but we are going to repeat them and update this review accordingly.

Color space coverage was slightly below the smaller Surface Book 2 The base hardware configuration of the Surface Book 2 15 is always identical apart from the SSD capacity.

As we already saw when reviewing the smaller Surface Book 2, the new Windows power management feature left-click on the battery icon in the taskbar has quite an impact on the performance and, above all, the fan noise. The four cores support Hyper-threading and can process eight threads at the same time. This is why, the new ULV quad-core CPUs have a significant advantage over the old dual-core processors, such as the iU, at least, when it comes to the applications which can utilize the additional cores.

You can find additional information about the iU here. In principle, what we are supposed to have here is a watt part. However, here, the energy consumption averages 25 watts and peaks, temporarily, at 35 watts. So far, our review device performs just like the smaller Surface Book 2 However, the CPU in the smaller model was cooled passively, whereas the larger inch model relies on a small fan for cooling. Theoretically, this should mean better performance.

We do get the maximum score of points during the first benchmark run. However, after that, the performance drops to the level of the smaller model. The result varies slightly according to the power management setting. However, the noise level is affected by these settings much stronger. However, when two other settings are selected, the fan noise increases considerably This might not seem like a big increase, but the small fan does produce a very high-pitched sound, which is, subjectively, more annoying.

Things get interesting during our Cinebench R15 loop in which the benchmark runs 50 times in a continuous loop. The active cooling is the reason why the larger Surface Book 2 performs better than its smaller brother, which hit a plateau at points. That said, we expected more from the active cooling solution.

The average energy consumption is 5 watts higher, and even the new and extremely thin Dell XPS 13, which comes with a supposedly slower Core iU , manages to achieve a few more points over the course of 50 benchmark runs. When the laptop is running on battery power, the CPU performance does not decrease. While performance differed measurably between the three, the effects were minimal. The reason for this is quite possibly the power consumption limitation imposed upon the device.

The detailed analysis revealed very obvious differences in power consumption between the three profiles. On Recommended, however, we noticed a significant decrease in clock speed around 2, MHz and power consumption 6. The effect differed somewhat when looking at GPU performance, and the difference between Best and Better Performance was significant.

If not for the thermal limit of around W imposed upon the system the difference would have most likely been even more pronounced.

Surface temperatures were pretty similar regardless of profile due to the fact that the fans ran much slower and quieter in the two slower profiles. The keyboard felt warm to the touch when playing games but it was never annoying or even disturbing. Subsequently, we have taken our first measurements. All in all, the larger Surface Book 2 operates somewhat more quietly than the inch model. Nevertheless, under pure CPU load, the small fan is quite annoying with its high-frequency noise.

The biggest differences in terms of fan noise arise while gaming and during our stress test. As per usual, in the following days, we will conduct further tests and benchmarks and we will look at the impacts on performance more closely. An unfortunate occurrence with the Surface Book 2 13 was coil whine, which is also present in the larger model, unfortunately. When idle, the Surface Book 2 practically did not warm up at all. The dedicated GPU is disabled in this scenario, and so is the fan in the base unit.

Only the bottom edge warmed up ever so slightly, which was likely due to the keyboard backlight. The exact hotspot location varied depending on load scenario. Given the limited combined power consumption of Adding some extra CPU load power consumption remained firm at This is also the wall that games such as Witcher 3 run into. The following diagrams show the performance data while running the stress test on Best Performance and Better Performance.

On Better Performance, initial power consumption peaked at This is the reason why the battery did not discharge at all.

Overall temperatures were comparable despite the somewhat slower performance: the fans were running slower and system noise was reduced significantly to more reasonable and tolerable levels 35 vs.

The total battery capacity amounts to 86 Wh 23 Wh for the tablet, 63 Wh for the base and Microsoft promises, just like with the inch model, a video-playback runtime of up to 17 hours.

Naturally, we will put this claim to the test, but first we are going to carry out our practically oriented Wi-Fi test. The Surface Book 2 15 achieves a very good result of ten and a half hours, and, with this result, it falls slightly behind the inch model, which managed to achieve a total runtime of eleven hours. When the keyboard is disconnected, the battery life takes a nosedive. Now it is only three hours and five minutes.

In our video playback battery life test at a normalized brightness of nits Big Buck Bunny, H. Using just the tablet for watching videos playback time was reduced to close to 5 hours minutes. After the first few hours with the new Surface Book 2 15, we were able to draw a great many parallels between it and its smaller brother. The new performance slider in Windows 10, once again, has quite an impact on the fan noise.

The processor in the tablet is actively cooled. However, we were expecting more from the improved cooling solution as compared to the inch model. The screen is brighter, but it has more problems with screen bleeding and utilizes PWM for brightness control. Moreover, the factory calibration is not very good. According to our first tests, the larger battery does a good job of offsetting the increased energy consumption of the bigger panel, and, when browsing the web, you can expect more than ten hours of battery life.

We will carry out the remaining tests and benchmarks in the next couple of days. In doing so, we will focus mostly on the impacts on performance and energy consumption of the various power profiles. After a few months’ delay, the larger version of the Microsoft Surface Book 2 is finally available in Germany.

We have got our review device precisely at the sales launch and now we put it to the test. We are especially excited to examine the energy management of the more powerful components, because we already saw bottlenecks in this area in the smaller model. Update: display readings, Witcher 3, temperatures, video playback battery life. Intel Core iU 4 x 1. Note: The manufacturer may use components from different suppliers including display panels, drives or memory sticks with similar specifications.