![]() You can see similar throttling (normally temporary) if your fans are broken or don't work well. I think in active cooling mode both fans and throttling are used but throttling is only enabled if your computer runs hot even with fans active.) (Such as the "system cooling policy", which can be set to either active cooling ( fans) or passive cooling ( throttling). There are power settings in Windows that will similarly throttle CPU speed to reduce power consumption. You should also restore other power settings to their default values after toggling "quiet" or "fan-less" mode. From my experience with this issue on Windows 7/8 the only way I could disable it was using the keyboard. I'm not sure if the setting can be disabled by software. (Of course with the fans disabled it won't stay very cool.) It is supposed to make the computer draw less current and thus run cooler. This mode locks the clock speed to its minimum value. The frequency is usually some multiple of 400 MHz or 800 MHz on consumer Intel machines. Your CPU is capable of running at variable clock speeds. If it's not controlled by the keyboard then it's possible that it's a BIOS setting. It's easy to accidentally enable if it's one of the function keys alongside volume control, screen brightness, keyboard backlight, etc. On some laptopts it's controlled using the keyboard. It tries to reduce how much heat your computer produces and disables fans. While the heavy ghosting isn't much of an issue on the original Surface Book because of its limited graphics capabilities, anyone expecting to game on the more capable 15-inch Surface Book may find the slow response times distracting for fast-moving 3D games.Some laptops have a quiet mode feature. Based on the first generation Surface Book, however, its black-to-white response time of 21 ms is slower than on Microsoft's latest Surface Pro tablet (18 ms) and much slower than on the Gigabyte Aero 14 (13.2 ms) or MSI GS63VR (4.4 ms). We've yet to record the final values for the Surface Book 2 as our table below shows and we will update the numbers once we've double-checked the readings. Lastly, it's worth noting that the 13.5-inch Surface Book 2 utilizes the exact same Panasonic MEI96A2 3:2 IPS panel as does the first generation Surface Book and should share very similar black-white and gray-gray response times. We will run similar tests on the 13.5-inch GTX 1050 unit and reconfirm the oddball power consumption behavior on our eventual 15-inch GTX 1060 review. The system will not drain its battery until 0, however, as PC World notes that the GTX 1060 GPU will eventually throttle all the way down to 1 GHz to prevent draining the battery any further. The source blames the insufficient 102 W AC adapter as most gaming notebooks with the same GTX 1060 GPU typically ship with more capable 150+ W adapters to avoid such issues. In other words, be prepared to see your battery percentage reading slowly tick away from 100 percent to 85 percent or lower over time when running consistently heavy loads and when properly connected to an outlet. Making matters worse for Microsoft, power consumption tests as performed by PC World reveal that the 15-inch Surface Book SKU will consume battery power faster than it can recharge. Perhaps unsurprisingly, we noted similar behavior on the recent Surface Pro 5 i7-7660U tablet as well. For comparison's sake, the dual-core i5-7300HQ commonly found on most entry-level gaming notebooks is just slightly faster with an average score of 515 points despite having half the parallel threads as the i7-8650U. The Kaby Lake-R processor scores a respectable 675 points on its initial run only to nosedive to 503 points by the fourth loop to represent a performance drop of just over 25 percent. As it turns out, Microsoft had to cut some deep corners in order to fit all that power under the hood.įirst, our initial CPU stress tests confirm that the quad-core i7-8650U CPU throttles heavily following just a single run of CineBench R15 Multi-Thread as shown by our graph below. ![]() Now that systems are finally shipping to consumers, we've had a chance to play around with our own 13.5-inch unit and have been documenting our findings on our preview page here. From our point of view, however, we had immediate reservations about how Microsoft was able to cram a non-Max-Q GTX 1050 and GTX 1060 into such a thin form factor detachable to begin with without some behind-the-scenes drawbacks. When Microsoft unveiled the Surface Book 2 in October, the press was enamored by its sleek looks and multi-mode features that appeared to check all the right boxes over the original 2015 Surface Book.
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