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The slowest XPS 15 9575 is almost as fast as the fastest XPS 15 9560

The slowest XPS 15 9575 is almost as fast as the fastest XPS 15 9560 (Image source: Dell)
The slowest XPS 15 9575 is almost as fast as the fastest XPS 15 9560 (Image source: Dell)
Our first Kaby Lake-G laptop to hit our database has returned some decent numbers to give even the Core i7-7700HQ and Nvidia GeForce GTX 1050 a run for their money. The 65 W Core i5-8305G may be the lowest CPU option available for the Dell convertible, but its performance is on par with an entry-level Pascal gaming notebook while being thinner and more versatile than most.

Dell is finally shipping its first laptop with Kaby Lake-G and initial impressions are promising. We've been able to show that even the entry-level XPS 15 9575 convertible with the Intel Core i5-8305G and AMD Radeon RX Vega M GL can go toe-to-toe with the Core i7-7700HQ and Nvidia GeForce GTX 1050, respectively, while being generally more power efficient. Perhaps coincidentally, the i7-7700HQ CPU and GTX 1050 GPU are also the highest configurable options available on the current XPS 15 9560 series. XPS 15 9575 owners are essentially getting the raw processing and graphics performance of the top-of-the-line XPS 15 9560 even at the bottom-line base configuration level.

The XPS 15 9560 can be configured with the Core i3-7100H, i5-7300HQ, or i7-7700HQ while the XPS 15 9575 can be configured with the Core i5-8305G or i7-8705G. Our comparison benchmarks below show that the slowest CPU option for the XPS 15 9575 is only about 7 percent behind the i7-7700HQ during multi-threaded workloads while being much faster than the dual-core i3-7100H and quad-core i5-7300HQ. The presence of Hyper-Threading on the quad-core i5-8305G is a big reason why the Kaby Lake-G processor can outclass the i5-7300HQ by such a large margin even though their base clock rates are only 300 MHz apart (2.5 GHz vs. 2.8 GHz).

Cinebench R15
CPU Single 64Bit
Dell XPS 15 9560 (i7-7700HQ, UHD)
Intel Core i7-7700HQ
157 Points ∼72%
Dell XPS 15 9575 i5-8305G
Intel Core i5-8305G
157 Points ∼72%
Dell XPS 15 2017 9560 (7300HQ, Full-HD)
Intel Core i5-7300HQ
146 Points ∼67%
no name
Intel Core i3-7100H
130 Points ∼60%
CPU Multi 64Bit
Dell XPS 15 9560 (i7-7700HQ, UHD)
Intel Core i7-7700HQ
735 Points ∼17%
Dell XPS 15 9575 i5-8305G
Intel Core i5-8305G
681 Points ∼16%
Dell XPS 15 2017 9560 (7300HQ, Full-HD)
Intel Core i5-7300HQ
508 Points ∼12%
no name
Intel Core i3-7100H
330 Points ∼8%
Clevo N855H1
Intel Core i3-7100H
325 Points ∼7%
Cinebench R11.5
CPU Single 64Bit
Dell XPS 15 9575 i5-8305G
Intel Core i5-8305G
1.79 Points ∼73%
Dell XPS 15 9560 (i7-7700HQ, UHD)
Intel Core i7-7700HQ
1.78 Points ∼73%
CPU Multi 64Bit
Dell XPS 15 9560 (i7-7700HQ, UHD)
Intel Core i7-7700HQ
8.14 Points ∼30%
Dell XPS 15 9575 i5-8305G
Intel Core i5-8305G
7.47 Points ∼28%
Clevo N855H1
Intel Core i3-7100H
3.61 Points ∼13%
Cinebench R10
Rendering Single 32Bit
Dell XPS 15 9575 i5-8305G
Intel Core i5-8305G
5844 Points ∼54%
Dell XPS 15 9560 (i7-7700HQ, UHD)
Intel Core i7-7700HQ
5825 Points ∼54%
Clevo N855H1
Intel Core i3-7100H
4870 Points ∼45%
Rendering Multiple CPUs 32Bit
Dell XPS 15 9575 i5-8305G
Intel Core i5-8305G
21845 Points ∼44%
Dell XPS 15 9560 (i7-7700HQ, UHD)
Intel Core i7-7700HQ
21671 Points ∼44%
Clevo N855H1
Intel Core i3-7100H
11172 Points ∼22%
wPrime 2.0x - 1024m
Clevo N855H1
Intel Core i3-7100H
503 s * ∼6%
Dell XPS 15 9575 i5-8305G
Intel Core i5-8305G
215.823 s * ∼3%
Dell XPS 15 9560 (i7-7700HQ, UHD)
Intel Core i7-7700HQ
214.927 s * ∼3%
Super Pi Mod 1.5 XS 32M - ---
Dell XPS 15 9575 i5-8305G
Intel Core i5-8305G
564.887 Seconds * ∼3%
Dell XPS 15 9560 (i7-7700HQ, UHD)
Intel Core i7-7700HQ
522.024 Seconds * ∼2%

* ... smaller is better

As for graphics, the discrete Radeon RX Vega M GL GPU in the i5-8305G is roughly comparable to the GTX 1050 in 3DMark benchmarks if not slightly faster. Intel's official reveal of the Vega M GL included a slide claiming that the AMD GPU would be on par with the GTX 1050 and 1050 Ti and so it's encouraging to see the same here. The GTX 1050 is the highest GPU option available for the XPS 15 9560 and the Vega M GL can already top it. All current SKUs of the XPS 15 9575 have the same Vega M GL GPU even if the processor may be different since the faster Vega M GH is reserved for 100 W CPUs.

Real-world gaming performance, however, is a different story. AMD cards are known to be less optimized than Nvidia cards and the unique intricacies of Kaby Lake-G may prove to be a hindrance in the long run. The Integrated HD Graphics 630 GPU in the i5-8305G SoC is always active alongside the Vega M GL and games such as Destiny 2 and Middle-earth: Shadow of War may have resolution scaling issues as a result. Other titles like Dirt 4 and Final Fantasy XV run abnormally slow even when set to very low graphical settings. It's clear that further optimization will be needed before Kaby Lake-G GPUs can become as reliable as its Nvidia equivalent.

3DMark
1920x1080 Fire Strike Graphics
Dell Inspiron 15 7000 7567
NVIDIA GeForce GTX 1050 Ti (Laptop), 7700HQ
7646 Points ∼19%
Dell XPS 15 9575 i5-8305G
AMD Radeon RX Vega M GL / 870, 8305G
7355 Points ∼18%
Dell XPS 15 2017 9560 (7300HQ, Full-HD)
NVIDIA GeForce GTX 1050 (Laptop), 7300HQ
6393 Points ∼16%
Dell XPS 15 9560 (i7-7700HQ, UHD)
NVIDIA GeForce GTX 1050 (Laptop), 7700HQ
6074 Points ∼15%
Dell Latitude 5480 N005L548014EMEA
Intel HD Graphics 630, 7440HQ
1067 Points ∼3%
1920x1080 Fire Strike Score
Dell Inspiron 15 7000 7567
NVIDIA GeForce GTX 1050 Ti (Laptop), 7700HQ
6709 Points ∼25%
Dell XPS 15 9575 i5-8305G
AMD Radeon RX Vega M GL / 870, 8305G
6235 Points ∼23%
Dell XPS 15 9560 (i7-7700HQ, UHD)
NVIDIA GeForce GTX 1050 (Laptop), 7700HQ
5524 Points ∼21%
Dell XPS 15 2017 9560 (7300HQ, Full-HD)
NVIDIA GeForce GTX 1050 (Laptop), 7300HQ
5458 Points ∼20%
Dell Latitude 5480 N005L548014EMEA
Intel HD Graphics 630, 7440HQ
985 Points ∼4%
3DMark 11
1280x720 Performance Combined
Dell XPS 15 9575 i5-8305G
AMD Radeon RX Vega M GL / 870, 8305G
7788 Points ∼34%
Dell Inspiron 15 7000 7567
NVIDIA GeForce GTX 1050 Ti (Laptop), 7700HQ
7281 Points ∼32%
Dell XPS 15 2017 9560 (7300HQ, Full-HD)
NVIDIA GeForce GTX 1050 (Laptop), 7300HQ
5995 Points ∼27%
Dell Latitude 5480 N005L548014EMEA
Intel HD Graphics 630, 7440HQ
1685 Points ∼7%
1280x720 Performance GPU
Dell XPS 15 9575 i5-8305G
AMD Radeon RX Vega M GL / 870, 8305G
9862 Points ∼19%
Dell Inspiron 15 7000 7567
NVIDIA GeForce GTX 1050 Ti (Laptop), 7700HQ
9725 Points ∼19%
Dell XPS 15 2017 9560 (7300HQ, Full-HD)
NVIDIA GeForce GTX 1050 (Laptop), 7300HQ
8201 Points ∼16%
Dell Latitude 5480 N005L548014EMEA
Intel HD Graphics 630, 7440HQ
1574 Points ∼3%

We recommend checking out our review on the XPS 15 9575 i5-8305G for more information and our overall take on the convertible. It's inevitable that we will revisit higher-end SKUs of the XPS 15 9575 with the Core i7-8705G SoC in the near future due to the popularity of the XPS series and our curiosity for Intel's seemingly tangential Kaby Lake-G platform.

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> Notebook / Laptop Reviews and News > News > News Archive > Newsarchive 2018 04 > The slowest XPS 15 9575 is almost as fast as the fastest XPS 15 9560
Allen Ngo, 2018-04-23 (Update: 2018-04-23)
Allen Ngo
Allen Ngo - US Editor in Chief
After graduating with a B.S. in environmental hydrodynamics from the University of California, I studied reactor physics to become licensed by the U.S. NRC to operate nuclear reactors. There's a striking level of appreciation you gain for everyday consumer electronics after working with modern nuclear reactivity systems astonishingly powered by computers from the 80s. When I'm not managing day-to-day activities and US review articles on Notebookcheck, you can catch me following the eSports scene and the latest gaming news.