Announcing the processors Kaby Lake-G with graphics subsystem Radeon RX Vega M, Intel noted that they will begin to appear in the system assembled yet. Later it became known that one of the first products based on three-chip CPUs – a new “2-in-1” Dell XPS 15 – will be released in April. This circumstance, however, did not prevent the correspondent of the HotHardware resource from conducting a blitz test of the prototype XPS 15 in the benchmark of the game Rise of the Tomb Raider and comparing the result with the “successes” of Acer Swift 3 (GPU GeForce MX150) and Dell XPS 13 9370 (Intel UHD 620 ).
The pre-production sample of the XPS 15 laptop includes a quad-core Core i7-8705G processor, 16 GB of RAM and a PCI-E SSD with NVMe protocol. Recall that the Radeon RX Vega M GL, the discrete graphics core of the third-oldest CPU of the Kaby Lake-G family, contains 1280 GCN 5th generation shader units and communicates with a 4-GB HBM2 buffer memory chip on the 1024-bit bus. The GPU frequency is in the range 931-1011 MHz, and the memory frequency providing 179.2 GB / s bandwidth is 700 (1400) MHz.
At a resolution of 1920 × 1080 pixels and “Very High” quality settings for in-game graphics, the Core i7-8705G processor with GPU Radeon RX Vega M GL gave an average of 30 fps in the above benchmark. Drawdowns fps in some scenes turned out to be quite serious (just look at 0.03 fps in Geothermal Valley), so the comparison of Dell XPS 15 with the serial models of laptops was carried out at “high” quality settings, at which the HR frequency averaged 35 fps, a minimum of 18 fps and a maximum of 68 fps.
The demonstrated results are not bad for ultra-thin “2-in-1”, but more “well-fed” laptops and mini-PCs can be strengthened with Core i7-8809G and Core i7-8709G processors with Radeon RX Vega M GH graphics, 25% higher than the Radeon RX Vega M GL.
Competitors of the prototype Dell XPS 15 were unable to provide a “playable” frame rate in the Rise of the Tomb Raider (1920 × 1080, High preset). So, Acer Swift 3 with GeForce MX150 on board produced an average of 24 fps, and Dell XPS 13 9370 with UHD 620 – only 8 fps.