Intel’s first mainstream U-series 10nm CPU looks like it’s going to be the i7-10510U, and it’s slated to power the soon-to-be-releasted Dell XPS 13 7390 2-in-1. Benchmarks for it have just shown up on consumer-tool Geekbench’s website, but any wild expectations for the performance of this 10nm chip should be tempered based on the scores put up: The multi-core scores only show a 6.94% increase over one of the fastest 15W 8th generation Whisky Lake CPUs, the i7-8565U, while the single-core performance is actually worse.

The best scores recorded by Notebookcheck for the i7-8565U are 5547 points for 64-bit single-core and 16490 for 64-bit multi-core. On the other hand, the Core i7-10510U found in the listing for Dell’s upcoming XPS 13 7390 scores 5248 on single-core and 17676 in multi-core. That’s a 6.94% performance increase in multi-core performance but roughly a 5.5% decrease in single-core performance for the new 10th gen 10nm U-series CPU. You can see the full details on the Geekbench website here.

For comparison, remember that this i7-10510U has a base frequency of an odd 2.29 GHz and maximum turbo frequency of 4.89 GHz while the i7-8565U has a 1.8 GHz base clock and 4.6 GHz maximum. With thermal constraints being equal, you would expect the upcoming 10nm U-series CPU to be faster than an 8th gen 14nm CPU of the same series yet with lower clocks. It could be that because this is likely a pre-release XPS 13 7390 being tested, it’s yet to be optimized and better scores may be posted with time. I personally don’t expect a significant increase, however, as Intel’s troubles with the 10nm manufacturing process are extremely well-documented.

The XPS 13 7390 2-in-1 is a nice-looking laptop sporting some of the first 10nm U-series CPUs. Unfortunately, it will have a soldered SSD, and I therefore cannot recommend purchasing it.

It’s also important to point out that Geekbench is a benchmarking tool that essentially shows the best-case performance of a chip, and is often not indicative of real-world sustained performance. For sustained performance of a CPU, running Cinebench multi-core in a loop of at least 10 times is recommended. It will be very interesting to see how the first official laptops running this 10nm CPU compare to today’s 14nm Whisky-Lake U-series CPUs in real-world tests.

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