In conclusion, the Lenovo ThinkBook 15 features a powerful and fast processor that is capable of handling any computing task. Besides, this laptop performed better than most of its closest competitors on a CPU benchmark test. Over the years, Lenovo has evolved greatly in the tech world. With the caliber of laptops they produce, they have become quite popular among tech lovers. The ThinkBook 13s definitely lags behind these two in single-core performance (1,404 for the ThinkBook 13s versus 1,539 for the XPS 13 and 1,558 for the Book 13), but considering that this is more marketed towards business and professional users, multicore performance is much more important, so when it comes down to it, they're pretty evenly matched. In our 3DMark tests, which predominantly measure GPU performance, the ThinkBook 13s edges past the XPS 13 in Firestrike (4,234 to 4,173) and more or less ties its Time Spy score (1,513 to 1,547). The ThinkBook 13s manages keep up with the XPS 13 in GeekBench 5's multicore benchmark (5,377 to 5,432) and only comes up 20 points short of tying the Book 13 in multicore performance (5,397).

Meanwhile, write speed is the amount of time that it takes the storage drive to open a file. So, based on the CrystalDiskMark test, the Lenovo ThinkBook 15 recorded a sequential read speed of 2366 MBps. Speaking of multitasking, with 16 GB RAM, the Lenovo ThinkBook 15 should be able to run 18 chrome tabs simultaneously without lagging. Besides, you should be able to switch between these Chrome tabs with ease even when streaming a movie on Netflix. The 13.3-inch display in my review unit does not have touch functionality, though it is an optional upgrade. The 16:10 aspect ratio cuts out unnecessary bezel along the bottom "chin" of the display, and it provides a bit of extra screen space for viewing documents.

Lenovo's ThinkBook 13s (Gen 4) is a slim high-end Ultrabook with modern AMD and Intel processor options. In fact, this laptop performed better than most of the laptops in its category. For example, the MSI Prestige 15 which uses the 10th-gen Intel Core i7-1185G7 processor scored 1126 points on the Cinebench R15 test. In addition to its IPS panel, this display features an anti-glare coating. This anti-glare coating reduces reflection from the display.

The ThinkBook 13s (Gen 4)'s keyboard is one of its best features; those who spend all day typing will love what Lenovo has to offer. The keyboard's wide setup on the compact chassis means there isn't enough room for top-firing speakers; they're installed on the bottom panel in a more traditional sense, with one 2W speakers in either front corner. Some Dolby Audio tuning profile options are available through Lenovo's onboard Vantage app, giving you a bit of flexibility in what audio sounds like. Note that this isn't the same as Dolby Atmos, which is more of a spatial audio tech that can emulate surround sound. Due to the 4K UHD resolution, this laptop’s display will be able to deliver crisp, colorful, and realistic content. Moreover, a 4K UHD resolution display is somewhat better than an FHD resolution display.As mentioned earlier, this graphics card is a dedicated GPU with 4 GB dedicated VRAM. Therefore, with this graphics card, the Lenovo ThinkBook 15 should be run most high-end games. The rest of the laptop is plastic, though it looks like metal. It's a classy look, and the laptop feels stiff and sturdy. Moreover, based on the setting of the benchmark test, a high score means a better graphics rendering performance. So, on the test, the Lenovo ThinkBook 15 recorded a whopping 13343 points.