HP ProBook 640 G4 is €126 cheaper today, 40% below the other.
Over the 42 days of the last 90 both were for sale, the HP ProBook 640 G4 was the cheaper one on 42 of 42 days, by €120 to €122, a gap wide enough to decide on by itself.
Linux support and the screen both differ between them.
Price history: the lowest price we saw each week
- HP ProBook 640 G3€301 now
- HP ProBook 640 G4€179 now
Week of 5 October 2026
- HP ProBook 640 G3PCLiquidations
- €301
- HP ProBook 640 G4PCLiquidations
- €179
Every week, as a table
| Week | HP ProBook 640 G3 | HP ProBook 640 G4 |
|---|---|---|
| 24 August 2026 | €301 | €181 |
| 31 August 2026 | €301 | €181 |
| 7 September 2026 | €301 | €179 |
| 14 September 2026 | €301 | €179 |
| 21 September 2026 | €301 | €179 |
| 28 September 2026 | €301 | €179 |
| 5 October 2026 | €301 | €179 |
What differs between them
No shop states these. We looked them up ourselves, and we say when.
| Fact | HP ProBook 640 G3 | HP ProBook 640 G4 |
|---|---|---|
| Linux support | nobody has published this yet | Linux runs on this laptop. “Linux version 5.19.9-200.fc36.x86_64 (XXX@XXX) (gcc (GCC) 12.2.1 20220819 (Red Hat 12.2.1-1), GNU ld version 2.37-36.fc36) #1 SMP PREEMPT_DYNAMIC Thu Sep 15 09:49:52 UTC 2022”linux-hardware.ru, checked 6 September 2026. |
| Soldered RAM | The RAM can be upgraded. “Of course, the RAM chip slots are two and one of them is taken by a Micron 8GB DDR4-2400 stick but if needed, you can go up to 32GB (2x 16GB) DDR4-2400.”laptopmedia.com, checked 6 September 2026. | The RAM can be upgraded. “2 SODIMM Both slots are customer accessible / upgradeable”gc3.de, checked 6 September 2026. |
| Screen quality | Reviewers rate this screen poorly. “We are mostly disappointed by the display because at this price point, we were expecting a budget IPS panel at the very least.”laptopmedia.com, checked 6 September 2026. | nobody has published this yet |
HP ProBook 640 G3 and HP ProBook 640 G4HP ProBook 640 G3 and HP ProBook 640 G4 each have a page of their own.