These numbers are more indicative of what you’ll see in most real-world use, given that few applications will use all of the cores of a CPU. Single-core performance for the Spectre x360 15 also sings, as you can see from our results in Cinebench (below) using a single CPU thread. In this CPU test, the Spectre x360 15 is more than 30 percent faster. But it’s a good example of the performance you give up when you try to stuff a 45-watt CPU inside a convertible laptop with a 75-watt graphics card. It’s another 15-inch convertible laptop with a high-power Core i7-7700HQ inside, plus GeForce GTX 1050 graphics. One other result we want to point out above is from the Lenovo Yoga 720. The Dell XPS 15 and the new HP Spectre x360 15 actually have the same basic CPU, but the 8th-gen Kaby Lake-G version in the Spectre x360 15 is more than 50 percent faster than the 8th-gen Kaby Lake-R version in the XPS 15. The Core i7-8705G in the Spectre x360 15 performs far closer to an H-series-class CPU, thanks to a unique power-sharing arrangement between the GPU and CPUĪs we expect given its Core i7-7700HQ H chip, the Dell XPS 15 clamshell outruns everyone…except the new Core i7-8705G. The older unit comes in last, while the younger easily outpaces it. We included results from the two other Spectre x360 15s in our performance chart: The Kaby Lake-R twin to our test unit, with the low-power quad-core Core i7-8550U, and the previous-generation low-power dual-core Core i7-7500U. Which will prevail?įirst up is Cinebench R15, which tests multi-core CPU performance when rendering a 3D scene. Our performance tests, therefore, are really a battle between the established H and the upstart G (while the low-power U watches from the sidelines). If the GPU is at rest, power and thermals can be used to push the CPU to higher levels. As you might guess from the name, performance between the CPU and the GPU is shared based on workload. Intel said it’s using a new Dynamic Power Sharing feature that’s possible only with the unique design of the Kaby Lake-G CPU. Sure, they’re 8th-gen, but are they low-power or high-power? Well, it turns out, they’re high-power for the most part. Intel has been pretty coy about exactly what’s inside the “G” series of CPUs. The H chips usually rule the school, but Kaby Lake-G brings in some fresh, fast blood. The surprise for us came from the CPU side of things, though.Īs with previous generations of its laptop CPUs, Intel’s 8th generation comes in two variants: low-power “U” chips and high-power “H” chips. Much of the excitement around Intel’s Kaby Lake-G CPUs stems from its once-unthinkable marriage of a custom Radeon RX Vega M with a quad-core 8th-generation Kaby Lake CPU. The Thunderbolt 3 ports with USB PD will also charge the laptop, but at a slower rate than you’ll get with the traditional barrel charger. The charger for the Spectre x360 15 is a beefy 150-watt unit. If you do a little dance because there’s still a USB Type A port on the new HP Spectre x 360 15, that’s perfectly fine with us. On the left there’s an SD card reader, analog audio jack, standard barrel charger, and-wait for it-a USB Type A port! Yes, Internet, rejoice! Adam Patrick Murray You get a pair of Thunderbolt 3 ports and a full-size HDMI on the right side. The Spectre x360 doesn’t skimp on connectivity. Adam Patrick MurrayĪ fingerprint reader, HDMI 2.0, and a pair of Thunderbolt ports adorn the right side of the Spectre x360 15. We’ve had palm-rejection issues with some of HP’s extra-wide trackpads in the past, but this one we could not get to trigger. The trackpad is a glass-coated Synaptics ClickPad that’s slightly offset to align with the keyboard.
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