Jumper EZbook S4 Review

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Jumper’s EZbook S4 is another 2018 Gemini Lake budget laptop model. But unlike others, this one comes with 8GB of DDR4 RAM instead of the typical 4GB DDR4. The build of the laptop is lightweight because Jumper opted to use mostly plastic, the housing, the lid and the palm rest. The only metal you’ll find is on the inside, the keyboard support backing plate and the hinge for the screen. As a result the laptop definitely lacks that premium feel the all-metal laptops have like the EZbook 3 pro or Lapbook SE. The keyboard while it’s not bad to type on the use of plastic and this lighter build result in some unwanted flex and bounce when typing. The keycaps are silver which is normally a big nono but they are at least painted with black letters. The function keys are in a light blue which isn’t so visible.

Jumper EZBook S4 review video index:

01:02 – Weight & thickness
01:27 – Build, design & ports
04:14 – Windows & devices
07:02 – Audio
07:31 – Internals
10:13 – Bios settings
11:15 – Linux live USB
11:28 – Performance
12:05 – Vs Lapbook SE
13:26 – Webcam sample
13:49 – Recap
14:38 – Pros & Cons

Jumper EZBook S4 Specs:

    • 14.1” 1080p IPS (Matte)
    • Intel Celeron N4100 2.4ghz max
    • 8GB DDR4 2133Mhz
    • 128GB eMMC 5.1 (Samsung)
    • USB 2.0, USB 3.0,
    • HDMI 2.0A MicroSD reader,
    • 35Wh battery
    • Windows 10 Home
    • Intel Wireless AC 3165 / BT 4.1

The Jumpers touchpad isn’t as large as other models, it’s okay to use but could do with a smoother surface and a bit more accuracy for finer movements. It’s controlled via Windows precision touchpad drivers at least. The ports are usual for this class of laptop, but normally we get two USB 3.0 ports, this has only one and the second is USB 2.0 spec just like the Realtek USB 2.0 MicroSD reader. The webcam is a shocker, terrible one of the worst seen this year, mics are okay but that webcam is a joke. VGA resolution so 480p and it doesn’t even scrap 30fps and is very choppy as seen in my video review.

The screen is a matte coated IPS, with good blacks but lacks in maximum brightness topping out at 180 lux, color gamut coverage can be found in the below video review. But ideally, we should have over 250 lux with any screen even if it’s an anti-glare one. Audio via the 3.5mm jack is okay, nothing special but it doesn’t at least suffer from the all-to-common hiss and static interference. The speakers are poor, no bass and lacking in volume somewhat.

Performance from the N4100 even with the extra RAM compared to other models is lacking a little due to a 6W TDP set out of the box. If you increase this to 9W, things improve but do anything demanding and the CPU cores will surpass 90 degrees C. So really this model could do with a copper heatsink mod to improve the cooling if you plan to run higher than stock power limits. The 35Wh battery charges in about 2 hours and 40 minutes. And will last for 7-8 hours depending on what you’re doing and the brightness used.

Overall I found the EZBook S4 from jumper to be a letdown, disappointing build, performance isn’t the best, the extra ram isn’t really taken advantage of due to the low TDP. And then the build isn’t nearly as good as the older EZBook 3 pro models or even this years EZbook X4. If you really must have 8GB in your Gemini Lake laptop this isn’t the model to go for, wait for Teclast’s F7 Pro, Chuwi Lapbook Pro or the Lapbook SE 8GB model.


  • Can go for 7-8 hours
  • Fully unlocked bios
  • Empty M.2 2280 SSD slot
  • 8GB of RAM (Most have only 4GB)
  • HDMI 2.0A output 4k 57Hz
  • Only 1.2 kilos light


  • eMMC and not an SSD as advertised
  • Screen should be brighter
  • Terrible web camera
  • Poor speakers
  • Missing screw from the bottom
  • Bit too much Keyboard flex and bounce


Performance - 7.5
Build & Design - 7
Screen - 7.5
Sound - 6.5
Battery life - 8
Value for money - 6.5

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