Dell Latitude 7390 2-In-1 Review: A Convertible Built For Business

Dell Latitude 7390 2-in-1: ATTO Disk, SunSpider, PCMark, And Cinebench

To start things off and get a sense of how the Latitude 7390 2-in-1’s storage components perform, we fired-up ATTO for a quick sanity check on sequential disk transfer speeds across various file sizes with both read and write workloads.

ATTO Disk Benchmark, Testing NVMe Solid State Storage

dell 7390 atto

The SK hynix drive inside our Latitude 7390 performs decently well, though read performance strangely tapers off with larger transfer sizes. This curve persisted in each of our trials, including tests run back to back and subsets of transfer sizes, so we think we can rule out thermal issues causing throttling and chalk it up to the drive's firmware and NAND configuration. Write performance is variable, but at least it mostly remains consistent across larger transfer sizes.

Geekbench, Cinebench, And SunSpider 

We kicked off our general-purpose benchmarks with a cross-platform CPU compute benchmark called Geekbench, and then ran Cinebench R15, a 3D rendering benchmark that tests both the CPU and GPU engines in the processor. Cinebench is developed by Maxon, which is better known for its Cinema 4D software employed in professional 3D rendering and animation studios. We use both of Cinebench’s integrated tests for CPU and GPU.


Geekbench sees the Latitude 7390 2-in-1 trailing the near-equally specced out Lenovo ThinkPad X1 Carbon we tested. In fact, both notebooks are bettered by other models with “slower” CPU’s which leads us to believe the thermal constraints are too tight to properly support Intel’s high end mobile option. The stronger single core performance supports this theory as thermals are less of a concern under such workloads


Cinebench R15 echos our findings above with an even greater divide between Dell’s Latitude 7390 and the Lenovo X1 Carbon. This is, of course, likely due to Cinebench’s longer sustained workload.

We see the Latitude very quickly throttle to just 2.9GHz when we watch clock speeds during Cinebench, a far cry from the i7-8650U’s specified maximum turbo of 4.2GHz. The chip further throttles to 2.5GHz inside of 20 seconds. These results make us question if a lower-tier (and therefore cooler) processor might be better suited for use in this model.

The Latitude 7390 2-In-1 finishes in the upper third in our SunSpider tests. Although not quite as fast as some of the higher-end offerings, the 7390 is obviously speedy enough to handle browsing with ease. 

PCMark 10 Benchmarks

Next, we'll move from pure content creation in Cinebench, to productivity and mixed usage with PCMark. We're representing all tests from the PCMark 10 benchmark suite, including the Essentials, Productivity, Digital Content Creation and and total PCMark score. The Essentials test covers workloads like web browsing, video conferencing and app start-up times, while Productivity tests everyday office apps from spreadsheets to word processing. Finally, Digital Content Creation tests performance of a machine with respect to photo and video editing, as well as rendering and visualization workloads.


The Latitude 7390 2-in-1 again brings middling performance here with numbers that are outclassed by even the i5-8250U wielding Acer Swift 3. The Essentials score may be especially sensitive to the funky read performance results we had in ATTO as it tests application launch times.

Nevertheless, let’s shift gears to the Intel UHD 620 side of the die and see how graphical performance holds up…

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