Overview
The Lenovo ThinkPad T430s is the “thin and light” version of the Lenovo ThinkPad T430. I put “thin and light” in quotes because compared to most laptops made in the past 5 years the ThinkPad T430s is quite bulky - just not as bulky as the ThinkPad T430 (non “slim” version).
Notebookcheck has a good review of the T430s. The review covers some of the differences between the T430s and the T430. Basically, the T430s is a lighter, less upgradable version of the T430. The T430’s processor can be replaced, whereas the T430s’s processor is soldered in place.
Why talk at all about a 3rd generation i-series CPU ThinkPad T430s in 2026 when there are so many more capable machines? The cost of buying new, upgradable machines and parts is returning to 1990 levels of expense. Most of today’s inexpensive machines are either not upgradable, full of advertising, or locked to a limited ecosystem (ChromeBooks/ChromeOS).
Of course I’d be remiss if I didn’t mention I’m running Linux on my ThinkPad T430s. For anyone looking for a laptop to run Windows 11, the minimum ThinkPad I’d recommend would be the T480.
My Lenovo ThinkPad T430s
The ThinkPad T430s came on 1 of 4 CPU options (the CPU is not upgradable, unlike the T430):
- Intel Core i3-2370M, 2C/4T, 2.4GHz
- Intel Core i5-3210M, 2C/4T, 2.5GHz
- Intel Core i5-3320M, 2C/4T, 2.6GHz
- Intel Core i7-3520M, 2C/4T, 2.9GHz
My T430s came with the top of the line i7-3520M CPU. In synthetic benchmarks the i7-3520M gets smoked by the T430’s i7-3840QM (4 core, 8 thread) CPU.
Since buying the laptop ages ago, I’ve upgraded the RAM from 4GB to 16GB of DDR3L (2 x 8GB DDR3L), and I installed a Samsung 860 EVO 500GB 2.5" Solid State Drive (SSD).
When I first bought the laptop I ran Xubuntu Linux on it. About a year ago when we switched away from using Xubuntu at The Working Centre’s Computer Recycling Project I switched to using Linux Mint on it. Currently my T430s is running Linux Mint Cinnamon 22.3, but I’m about to switch away to Debian 13 + XFCE because Debian + XFCE has fantastic performance on minimal hardware.
Fig 1.
Linux Mint Cinnamon 22.3 Performance
Linux Mint Cinnamon 22.3 runs very well on the T430s, especially with the SSD and RAM upgrade. I like the fact that the Cinnamon desktop uses GNOME 3 on the back end as this makes it easy to (BASH) script changes. I commit my changes to github so I can later pull those changes to other machines.
I benchmarked my T430s with sysbench and geekbench and the scores are as follows:
| SYSBENCH Single Core | SYSBENCH Multi Core | GEEKBENCH |
|---|---|---|
| 1131.73 | 3105.13 | 1005 |
Why change from Linux Mint to Debian if the performance is decent?
- My T430s is no longer my primary laptop, I’ve since replaced it with a first generation ThinkPad P51 with a XEON processor, and it’s running Linux Mint 22.3.
- I’ve been experimenting with lower power machines, and if I’m going to put Debian on those I want to think more about the extra packages to include. My T430s is a more powerful test subject for the machines I’ve been giving a second life to with Debian + XFCE.
- When I test different Linux distributions I often find new and interesting software tools.
Debian is not as beginner-friendly as Linux Mint, or Ubuntu, both of which have more user-friendly graphical software managers installed, and make installing proprietary drivers (wifi, NVidia graphics cards) easier, but once set up, Debian can be fairly friendly (Linux Mint also maintains a Debian version of Mint).
Future upgrades
Besides installing Debian 13, there are a few more potential upgrades I’m considering.
I read, but do not recall, that the T430s has an mSATA slot that was used for a caching drive. I might add an mSATA drive as the OS drive and put the home directory on the 2.5" Samsung SSD. I considered RAID, but it doesn’t make sense from a write perspective - why wear down 2 drives at once?
The other really interesting upgrade would be to flash the BIOS with Coreboot, but before I do this I need some hardware, and I want to practice on another machine first.
Is buying a ThinkPad T430s worth it in 2026?
If your needs are minimal (watching Youtube, creating documents, etc.), a T430s might be a good Linux choice if you can get one for a reasonable cost.
T430s’ have easily replaceable batteries. Many 3rd party manufacturers are still selling batteries for this model as it was so heavily used by businesses when it first came out.
It’s also very simple to replace the RAM, battery, and 2.5" drive, much simpler than the newer T480s, or most new models that require using a guitar pick to separate plastic clips. The keyboard and trackpoint can also both be replaced.
While the 1600x900 screen (there is a lesser 1366x768 screen on some models) is not great, I find it usable.
My plan for the next 30 days is not to use my P51, but to switch this laptop to Debian (13) Trixie, and figuring out what I need to do to make base Debian more usable for my needs.