[SSD performance] Dell XPS 13 vs Lenovo X1 Carbon

Hello, I'm planning to buy one of those laptops (XPS 13 9360 256GB and X1 Carbon 2017 256GB) and I've found out, that the performance of SSDs is very different on these devices:

Dell:
Sequential Read: 1233 MB/s
Sequential Write: 732.6 MB/s
512K Read: 1036 MB/s
512K Write: 439.9 MB/s
4K Read: 35.55 MB/s
4K Write: 130 MB/s
4K QD32 Read: 536.9 MB/s
4K QD32 Write: 218.3 MB/s

Lenovo:
Sequential Read: 1827 MB/s
Sequential Write: 1383 MB/s
512K Read: 814 MB/s
512K Write: 1098 MB/s
4K Read: 60.97 MB/s
4K Write: 172.2 MB/s
4K QD32 Read: 601.2 MB/s
4K QD32 Write: 495.6 MB/s

So my question is: how much is the difference perceptible in real life usage? And is it a good deal to pay 33% more for the Lenovo? I don't mind any other features, just SSD performance. The laptop is gonna be used mainly for programming and some very light image editing (graphics for games).

 

Welcome to the laptop forums site

There are many factors to take into consideration when process speed
is you main requirement.

Example: most graphic tasks are now done faster with better graphic cards,
in the past the cpu took over the majority of these tasks, its changed.

Motherboards have improved the Input,output, throughput.

Yes, ssd drives have helped speed up the process considerably but you need to take other components in to consideration first.

ssd prices are coming down all the time and most of the time are very easy to replace, it may be worth your time to do some online pricing beforehand.

 

I know there are more important components, but I have already checked them all and they're almost the same on these laptops. So my question is how big is gonna be the difference between these SSDs, when combined with same specs (i7-7500u, 8 GB of RAM, FHD)?

 

I am going to stick my neck out a bit here!

Both machines have very good reviews, the downsides are a “integrated graphic processor” that will
need to use the internal ram, so the ram is an important factor here, ddr 4 is better than ddr3
and it's the one factor that will dictate speed of operations.

Laptops are a bit like horses for courses, it all depends on your needs now, and for the future usage.

The ssd differences will probably be quite minimal given the other internal parts, but the replacement prices between them is vastly different. Pci verses sata

Pci ssd's are very expensive and you may wish to buy a larger drive in the future.

The cpu's are midrange see this web page

http://www.passmark.com/

Some info on the 620 graphic chip here:

https://www.notebookcheck.net/Intel-HD-Graphics-620.172256.0.html

 

I don't think that the different in SSD read/write performance will make much difference in every day use - as how often do you need to sequentially read/write over 1000MB/s? The 512k and 4k read/write performance numbers are much closer, and more useful on a day to day basis.

As it happens, I've got a Dell XPS 13 and I love it. The build quality is fantastic, the touch-screen is leagues ahead of other laptops I've tried and I've got no complaints about performance (although I do no gaming on it, just office work).

 

Thanks for answers