Nonetheless, it is a huge upgrade from the integrated HD 4000 or HD 5500 commonly found on affordable Ultrabooks. This is in the same ballpark as many single SATA III SSDs if not lower. If conditions are met, the entire process should take no more than one to two seconds. Outdoor usability is very good when under shade or an overcast day. Competing convertibles like the Lenovo Yoga 3 Pro offer a hard toggle switch on the edge for convenient access, which can be very handy when sharing content with others in tablet mode. Attaching the tablet to the dock after powering on the tablet will temporarily disable the keyboard, touchpad, and USB ports. Single-core gains over Broadwell are smaller due to smaller differences in Turbo Boost speeds. Testing consisted of full battery discharge during video playback. Testing was conducted by Microsoft in October 2017 using a preproduction Intel® Core™ i5, 256GB, 8 GB RAM device. Subjectively, it's easy to say that the glossy screen is gorgeous and is one of the highlights of the notebook. The Surface Book is easily one of the best detachables currently on the market. As for the base, the front areas remain relatively cool when under high processing loads while the keyboard will warm up considerably near the center keys. The 5-point capacitive touchscreen is made easy to use by the relatively lightweight tablet and narrow bezel. The problem occurs under very specific circumstances and appears to be software-related rather than a hardware issue. Intel Clock Speed When idling, the base remains noticeably cooler than the tablet portion, which can be as warm as 33 C near the bottom quadrant of the screen. Colors and contrast do not significantly degrade even if viewing from extreme angles or orientations. Finally, the proper way to use the keyboard dock is to power on the tablet while it is connected to the dock. The warmest areas lie on the surface immediately above the top row of Function keys, which is conveniently away from the palm rests and touchpad. Part of the reason is because of the Surface Book's 13.5-inch 3:2 form factor, which will naturally be larger than 13-inch and 14-inch 16:9 notebooks. Its bare design gives a sense of missing features such as no HDMI-out and no WWAN, the latter of which is surprising considering its portable and versatile design motif. Intel Core i5-6300U, NVIDIA Maxwell GPU Surface Book, Samsung MZFLV256 NVMe, Intel Core i5-5300U, Intel HD Graphics 5500, Samsung MZNTE128HMGR-000SO, Intel Core i5-4300U, Intel HD Graphics 4400, Liteon IT LCS-256L9S-11, Intel Core i5-4200U, NVIDIA GeForce 820M, Seagate ST500LM000 Solid State Hybrid Drive, Intel Core i5-5200U, Intel HD Graphics 5500, Hitachi Travelstar Z7K500 HTS725050A7E630, Intel Core M-5Y10, Intel HD Graphics 5300, SanDisk DF4128, Intel Core i7-4720HQ, NVIDIA GeForce GTX 960M, Samsung SSD 850 EVO m.2 120GB, Intel Core i7-4720HQ, NVIDIA GeForce GTX 960M, Samsung SSD SM951 512 GB MZHPV512HDGL, Intel Core i7-4710HQ, NVIDIA GeForce GTX 860M, Kingston RBU-SC100S37128GD, Intel Core i7-5700HQ, NVIDIA GeForce GTX 950M, Micron M600 MTFDDAV512MBF M.2, Intel Core i7-4870HQ, Intel Iris Pro Graphics 5200, 2x Toshiba HG6 THNSNJ256G8NU (RAID 0), Intel Core i5-5200U, NVIDIA GeForce 940M, Samsung SSD PM851 256 GB MZYTE256HMHP, Intel Core i3-3217U, Intel HD Graphics 4000, Toshiba THNSNW128GMCP, Intel Core i5-5200U, NVIDIA GeForce 940M, Samsung SSD PM871 MZ7LN256HCHP, notebook-class CPU and GPU performance in a detachable form factor, high resolution, bright display fit for outdoor use, native 3:2 aspect ratio for full-frame SLRs, accurate colors and high contrast; 96 percent sRGB coverage, thicker and heavier than 13- or 14-inch Ultrabooks, native 3:2 aspect ratio not ideal for video or gaming, warm keyboard and tablet when under heavy loads, The Best Smartphones for Less Than 160 Euros, 1920x1080 Very High Preset AA:FXAA & High SS AF:8x, 1366x768 High Preset AA:FXAA & Low SS AF:4x. The Surface Book maintains healthy leads over common ULV processors of yesteryear including the i5-5300U Broadwell and i5-4200U Haswell by up to 14 percent and 27 percent, respectively, in multi-core CineBench tests. Testing conducted by Microsoft in August 2016 using preproduction Intel® Core™ i7, 1TB, 16 GB RAM device. Testing conducted by Microsoft in September 2015 using preproduction Intel® Core™ i5, 256GB, 8 GB RAM device. We'll be taking a full look in this review to see if the Surface Book is really any better than current detachables or even your average Ultrabook. Similar to its 3DMark results, the Microsoft-Nvidia GPU lies comfortably between the Nvidia 950M and 940M regarding real-world gaming performance.