Score breakdown ×
I guess it depends on the system then. The i5 laptops I've used need about 65W to charge properly, while in use so this could be capable. The i7 laptops need about 90W while in use, possibly more if they have discrete graphics. I'm going on personal experience. At 45W, you should be able to charge a Chromebook or lower powered systems pretty easily, and it might be okay for a midrange laptop.kunamvahees wrote: ↑ I believe 45W is enough. Max 65 is the adapters comes with normal laptop nowadays.
I have an i7 with 4k screen that slightly charges at 30w (At a snails pace) while working hard gaming. Charges ok at 45w, and only came with a 60w.fudge_u wrote: ↑ I guess it depends on the system then. The i5 laptops I've used need about 65W to charge properly, while in use so this could be capable. The i7 laptops need about 90W while in use, possibly more if they have discrete graphics. I'm going on personal experience. At 45W, you should be able to charge a Chromebook or lower powered systems pretty easily, and it might be okay for a midrange laptop.
Dolores!ol' dirty ewok wrote: ↑ Gipple
Most laptops are well below 45W these days, especially when not at full screen brightness or full usage of the CPU/GPU. My laptop is from 2016 with a i7 7500u / 15" LCD / Nvidia Graphics, and while it comes with a 65W charger, I can still browse the web/do office related work and charge my laptop (while in use) on my 19W cell phone charger.
The 7500U CPU is designed for ultrabooks. They're meant to balance power consumption with performance for everyday productivity usage, thus their power consumption is much lower. The gaming/workstation CPUs for laptops utilize more power and are higher performing for demanding users.Tcalp wrote: ↑ Most laptops are well below 45W these days, especially when not at full screen brightness or full usage of the CPU/GPU. My laptop is from 2016 with a i7 7500u / 15" LCD / Nvidia Graphics, and while it comes with a 65W charger, I can still browse the web/do office related work and charge my laptop (while in use) on my 19W cell phone charger.
For sure, but an XPS with a GTX 1650 isn't a 'common' laptop, I'm perfectly happy with my eGPU with a GTX 1060 running 2 4K displays / bluetooth keyboard & mouse when I'm sitting at my desk, and can just unplug my thunderbolt-3/usbc connector and take my laptop on the gofudge_u wrote: ↑ The 7500U CPU is designed for ultrabooks. They're meant to balance power consumption with performance for everyday productivity usage, thus their power consumption is much lower. The gaming/workstation CPUs for laptops utilize more power and are higher performing for demanding users.
The 15" Dell XPS (4K display, i5 CPU, and GTX 1650 graphics) I bought back in 2017 came with a 130W power adapter. I charge it regularly with an Apple 87W power adapter over USB-C without issue. When I used power adapters with a much lower power output I'd get warnings during boot up that the power source might not power by system sufficiently. The power adapters with lower power output would charge my laptop, but at a snails pace. The second I'd start gaming, video encoding, or even browse the web (I typically have 10+ tabs going at a time) the adapter would fail to charge properly and the battery life would drop. I tried a few power adapters around 45-60W initially, but returned them all. At the time, the only USB-C power adapter I could find that worked was the Apple 87W USB-C adapter, and I still use it.
