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HP ProBook 640 G3 review – pricey but reliable and enduring

Looking at the new HP ProBook 640 G3 reminds us of the good old ProBook 440 G3 that we reviewed a while back which is probably a good thing until you look at the price tag. The pricier ProBook 640 G3 offers little improvement and a tad more features than its more affordable alternative but most of you wouldn’t really notice the difference. That’s why we would like to help you out with your purchase and see if the notebook is worth your hard-earned money.

The ProBook 640 G3 aims at the more conventional business user looking for a reliable solution without the needless distractions. It offers the standard hardware like Intel Core i5-7200U CPU, integrated Intel HD Graphics 620 GPU, 8GB of DDR4-2400 RAM, 256GB M.2 PCIe NVMe SSD and a 14-inch Full HD TN panel. Also, the notebook doesn’t surprise with an unusual design or portable dimensions. It looks clunky on the outside but provides a good working experience on the go. Of course, for the asking price, you’d really want to consider alternatives such as the Lenovo ThinkPad E470 or our all-time favorite Acer TravelMate X349-M. But if you are not strictly looking for an entirely business-oriented machine, the ASUS ZenBook UX410UQ is also in the same ballpark.

You can find the available configurations here:


Retail package

The box containing the HP ProBook 640 G3 comes with the usual user manuals, DVD with drivers, the AC adapter and power cord.

Design and construction

Subjectively, the ProBook 640 G3’s design won’t appeal to everyone unless you are specifically looking for an upgrade from a previous ProBook. It’s also pretty hefty compared to other alternatives on the market tipping the scale at 1.95 kg and measuring at 27 mm thickness. That’s a whole lot for a 14-incher. However, the laptop compensates with a sturdy build that should last for years to come.

The lid retains the slightly rubberized finish for extra grip and HP’s glossy logo in the middle. The material doesn’t feel strong enough to withstand big pressure and it causes some ripples to appear on the LCD panel but it did pretty well on our twisting attempts due to the wide and stable hinges. Speaking of which, they provide smooth, stealth and linear travel and make opening the laptop with one hand possible. We definitely liked them. And as for the bottom, it’s made of the usual hard, slightly roughened, plastic and one big vent opening for better airflow.

The sides disappointed us to some extent. All of the I/O is stuck on the right side so imagine if you use them all when working on a desk – all the cables will be sticking out on the right side. Of course, this won’t be a problem for some users but we feel it’s important to mention this. On the left, however, you will find only the smart card reader, the optical drive and the main exhaust vent. There’s also a VGA connector located on the back side, if you ever find yourself needing those. The right, as we already mentioned, is overcrowded with all the ports you’d normally use – connector for the docking station, SIM card tray for LTE connectivity, LAN, two USB 3.0, one USB-C 3.1 (Gen 1), 3.5 mm audio jack and instead of an HDMI, HP has decided to include a DisplayPort. That’s probably a good thing but we would have really appreciated an HDMI output instead of VGA.

We are puzzled, however, by the fact that the interior on the much cheaper HP ProBook 440 G3 had a brushed aluminum surface while the one presented here imitates anodized aluminum but it’s still plastic. Fortunately, this doesn’t take away the sturdiness and we are quite satisfied by the rigidness of the palm rest area and the keyboard tray. There are just small visible deformations under great pressure. You will also notice the NFC sticker indicating that there’s an NFC chip integrated under the palm rest area, which is a neat feature if your smartphone supports the tech. In any case, we found the keyboard and the touchpad to be extremely comfortable. The keys provide a shorter than we would like travel but compensate with excellent tactile and clicky feedback. The backlight is discreet and usable while the trackstick is well-positioned. Moreover, the touchpad along with both sets of mouse buttons, feel great – satisfying light clicks and the trackpad area is responsive, accurate with fairly good gliding surface. The only thing that we miss is probably the middle button that we usually find on Lenovo’s ThinkPad laptops. It’s really useful for scrolling when using the trackstick.

All in all, the ProBook 640 G3 offers good build quality, sturdy construction and good hinge design with the only small drawback being the slightly flexible lid in the center. We also think that the device is pretty hefty and clunky for a laptop with a price tag around $1 000. What will attract the general business user, however, are the excellent input devices.

Disassembly, maintenance and upgrade options

Quite surprisingly, the laptop doesn’t have dedicated service covers but it’s quite easy to disassemble the machine, nonetheless. You just have to remove all the screws around the bottom and then gently pry it up.

Storage upgrades – 2.5-inch HDD/SSD, M.2 SSD

Although the laptop provides a standard 2.5-inch HDD/SSD bay along with an M.2 PCIe NVMe SSD slot, the latter obstructs the former and the other way around. We are always frustrated to see both slots included in a notebook where only one can be used at a time. Our unit arrived with Intel PCIe NVMe SSD with 256GB capacity. However, if you want to use your SSD along with a hard drive, you can always swap the optical drive for a caddy and insert a 2.5-inch HDD in there.

SlotUnitUpgrade price
M.2 SSD 2280 slot 1256GB Intel M.2 PCIe NVMe SSDUpgrade options
2.5-inch HDD/SSD slotFreeUpgrade options


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.

SlotUnitUpgrade price
Slot 18GB Samsung DDR4-2400Upgrade options
Slot 2FreeUpgrade options

Other components

The Wi-Fi adapter is placed right above the M.2 SSD and it’s Intel 7265NGW.

The battery unit is under the wrist rest area and it’s rated at 46W.

Cooling system

The cooling system is rather simple and consists of just one cooling fan connected to the heatsink with a short heat pipe.

Display quality

The display uses a CHI MEI CMN14C0 TN panel with Full HD (1920×1080) resolution inside a 14-inch diagonal. The pixel density is 157 ppi while the pixel pitch is 0.16 x 0.16 mm. The screen can be considered as “Retina” when viewed from a distance equal or greater than 55 cm.

Viewing angles are poor, as expected, due to the TN display.

We were able to record a maximum brightness of 332 cd/m2 in the center and 323 cd/m2 as average across the surface of the display with a maximum of 14% deviation. That’s a pretty strong result for a TN panel – usually IPS screens reach such brightness levels. The color temperature at maximum brightness is pretty close to the optimal – 6460K but as we go along the grayscale, the average color temperature is 11600K – extremely cold/blue-ish color reproduction is expected. Our custom profiles take care of this issue. You can see how these values change at 140 cd/m2 (74% brightness).

The maximum color deviation (dE2000) at 74% brightness compared to the center of the screen is 3.3, which is rather fine as values above 4.0 are unwanted. The contrast ratio is extremely low – 340:1.

Color reproduction

To make sure we are on the same page, we would like to give you a little introduction of the sRGB color gamut and the Adobe RGB. To start, there’s the CIE 1976 Uniform Chromaticity Diagram that represents the visible specter of colors by the human eye, giving you a better perception of the color gamut coverage and the color accuracy.

Inside the black triangle, you will see the standard color gamut (sRGB) that is being used by millions of people in HDTV and on the web. As for the Adobe RGB, this is used in professional cameras, monitors etc for printing. Basically, colors inside the black triangle are used by everyone and this is the essential part of the color quality and color accuracy of a mainstream notebook.

Still, we’ve included other color spaces like the famous DCI-P3 standard used by movie studios, as well as the digital UHD Rec.2020 standard. Rec.2020, however, is still a thing of the future and it’s difficult for today’s displays to cover that well. We’ve also included the so-called Michael Pointer gamut, or Pointer’s gamut, which represents the colors that naturally occur around us every day.

Interestingly, the display covers 80% of the sRGB color gammut and suggest of higher than usual quality of the TN panel.

Below you will see practically the same image but with the color circles representing the reference colors and the white circles being the result. You can see main and additional colors with 25%, 50%, 75% and 100% saturation inside the sRGB gamut pre and post calibration.

The “Design and Gaming” profile is created at 140 cd/m2 brightness, D65 (6500K) white point and optimal gamma in sRGB mode.

We tested the accuracy of the display with 24 commonly used colors like light and dark human skin, blue sky, green grass, orange etc. You can check out the results at factory condition and also, with the “Design and Gaming” profile.

The next figure shows how well the display is able to reproduce really dark parts of an image, which is essential when watching movies or playing games in low ambient light.

The left side of the image represents the display with stock settings, while the right one is with the “Gaming and Web Design” profile activated. On the horizontal axis, you will find the grayscale and on the vertical axis – the luminance of the display. On the two graphs below you can easily check for yourself how your display handles the darkest nuances but keep in mind that this also depends on the settings of your current display, the calibration, the viewing angle and the surrounding light conditions.

Response time

We test the reaction time of the pixels with the usual “black-to-white” and “white-to-black” method from 10% to 90% and reverse.

We recorded Fall Time + Rise Time = 17 ms.

PWM (Screen flickering)

Pulse-width modulation (PWM) is an easy way to control monitor brightness. When you lower the brightness, the light intensity of the backlight is not lowered, but instead turned off and on by the electronics with a frequency indistinguishable to the human eye. In these light impulses, the light/no-light time ratio varies, while brightness remains unchanged, which is harmful to your eyes. You can read more about that in our dedicated article on PWM.

Unfortunately, the display uses aggressive (low-frequency – 200 Hz) PWM for regulating brightness so we strongly recommend using the notebook at 100% brightness because PWM isn’t present at maximum luminance or just use our Health-Guard profile that eliminates screen flickering.

Blue light emissions

Installing of our Health-Guard profile not only eliminates PWM but also reduces the harmful Blue Light emissions while keeping the colors of the screen perceptually accurate. If you’re not familiar with the Blue light, the TL;DR version is – emissions that negatively affect your eyes, skin and your whole body. You can find more information about that in our dedicated article on Blue Light.

You can see the levels of emitted blue light on the spectral power distribution (SPD) graph.


We are mostly disappointed by the display because at this price point, we were expecting a budget IPS panel at the very least. However, we are presented with a panel that’s better than most TN displays out there with wide sRGB coverage and high maximum brightness but the extremely low contrast ratio, limited viewing angles and aggressive PWM bring down the score significantly. And when you add the extremely inaccurate color reproduction and white balance, the display becomes less attractive.

Fortunately, our Health-Guard profile will take care of the PWM while the Design and Gaming profile will fix the color inaccuracies, gamma and white point.

Buy our display profiles

Since our profiles are tailored for each individual display model, this article and its respective profile package is meant for HP ProBook 640 G3 configurations with 14.0″ CHI MEI CMN14C0 (FHD, 1920 × 1080) TN screen and the laptop can be found at Amazon:

*Should you have problems with downloading the purchased file, try using a different browser to open the link you’ll receive via e-mail. If the download target is a .php file instead of an archive, change the file extension to .zip or contact us at

Read more about the profiles HERE.

In addition to receiving efficient and health-friendly profiles, by buying LaptopMedia's products you also support the development of our labs, where we test devices in order to produce the most objective reviews possible.

Office Work

Office Work should be used mostly by users who spend most of the time looking at pieces of text, tables or just surfing. This profile aims to deliver better distinctness and clarity by keeping a flat gamma curve (2.20), native color temperature and perceptually accurate colors.

Design and Gaming

This profile is aimed at designers who work with colors professionally, and for games and movies as well. Design and Gaming takes display panels to their limits, making them as accurate as possible in the sRGB IEC61966-2-1 standard for Web and HDTV, at white point D65.


Health-Guard eliminates the harmful Pulse-Width Modulation (PWM) and reduces the negative Blue Light which affects our eyes and body. Since it’s custom tailored for every panel, it manages to keep the colors perceptually accurate. Health-Guard simulates paper so the pressure on the eyes is greatly reduced.

Get all 3 profiles with 33% discount


In the low, mid and high frequencies, the loudspeakers provide fairly clear sound but the maximum allowed volume is rather low.

Specs sheet

The current specs sheet is for this particular model and configurations may differ depending on your region

HP ProBook 640 G3 technical specifications table

Not available
14.0”, Full HD (1920 x 1080), TN
M.2 Slot
1x 2280 PCIe NVMe (M key) See photo
1x 8GB DDR4
340 x 237 x 27 mm (13.39" x 9.33" x 1.06")
1.95 kg (4.3 lbs)
Ports and connectivity
  • 1x USB Type-C 3.2 Gen 1 (5 Gbps)
  • 1x USB Type-A 3.2 Gen 1 (5 Gbps)
  • 1x USB Type-A 3.2 Gen 1 (5 Gbps)
  • VGA 1
  • Displayport full
  • Card reader SD, SDHC, SDXC
  • Ethernet lan 10, 100, 1000 Mbit/s
  • Wi-Fi 802.11 a/b/g/n/ac (2x2)
  • Bluetooth 4.2
  • Audio jack 3.5 mm jack
  • 1 docking connector
  • Fingerprint reader
  • Web camera 720p
  • Backlit keyboard
  • Microphone
  • Speakers
  • Optical drive
  • Security Lock slot


We used the pre-installed Windows 10 Pro for the writing of this review but if you wish to perform a clean install of the OS without the bloatware, we suggest downloading all of the latest drivers from HP’s official support page.


The upside of using a TN panel for a business notebook is the energy saving. TN panels tend to draw considerably less power than their IPS counterparts and thus resulting in better battery runtimes. The Probook 640 G3’s score in the web browsing and the video playback tests put it on the top of our battery rankings with one of the best scores in the 14-inch class. Some users will definitely appreciate the extended battery life instead of a high-quality IPS panel. Interestingly enough, though, the battery isn’t as big as we thought it is. The unit is rated at just 46Wh but proves to be enough to supply the system with enough power to get you through the day with a single charge and that’s a lot for a laptop.

All tests were performed using the same settings as always – Wi-Fi turned on, screen brightness set to 120 cd/m2 and Windows battery saving feature turned on.

Web browsing

In order to simulate real-life conditions, we used our own script for automatic web browsing through over 70 websites.

Oustanding battery runtime – 764 minutes (12 hours and 44 minutes).

Video playback

For every test like this, we use the same video in HD.

Unexpectedly, the video playback runtime is similar – 753 minutes (12 hours and 33 minutes).


We recently started using F1 2017’s built-in benchmark on loop in order to simulate real-life gaming.

Of course, the laptop isn’t made for gaming, especially away from the power source but it’s good to know that it can handle heavy workload for more than five hours – 323 minutes (5 hours and 23 minutes).

CPU – Intel Core i5-7200U

download-4Intel’s Core i7-6200U is part of the 7th Generation Kaby Lake CPUs and it’s the direct successor of the Core i5-5200U (Broadwell) and Core i5-6200U (Skylake). It’s also based on the same architecture as the aforementioned chips with little differences that should bring a small performance increase and a bump in power consumption. However, the new CPU is clocked at 2.5 GHz and its Turbo Boost frequency is 3.1 GHz opposed to the 2.3 – 2.8 GHz clocks on the previous Core i5-6200U.

Anyway, we still have the 2/4 core/thread count, 3MB last level cache, and a TDP of 15W, which includes the iGPU and the dual-channel DDR4 memory controller. Speaking of the former, the chip integrates the newer generation Intel HD Graphics 620 graphics chip clocked at 300 – 1000 MHz.

You can browse through our top CPUs ranking:

Here you will find other useful information and every notebook we’ve tested with this processor:


Fritz is a chess benchmark that tests the computing capabilities of the CPU with various chess moves. The Intel Core i5-7200U scored 6.353 million moves per second. In comparison, one of the most powerful chess computers, Deep(er) Blue, was able to squeeze out 200 million moves per second. In 1997 Deep(er) Blue even beat the famous Garry Kasparov with 3.5 to 2.5.

GPU – Intel HD Graphics 620

intel_hd_graphicsIntel’s HD Graphics 620 integrated iGPU can be found in various ULV (ultra-low voltage) processors from the Kaby Lake generation. The GT2 version of the graphics chip uses 24 EUs (Execution Units) that can be clocked up to 1050 MHz and it has a base frequency of 300 MHz but the former can vary depending on the CPU. Since the iGPU doesn’t have a dedicated memory of its own – or eDRAM for that matter – it uses the available RAM on the system which is 2x 64-bit DDR3 or DDR4.

The TDP depends on the CPU model but it’s usually equipped with a SoC rated at 15W including the memory controller.

You can browse through our top GPUs ranking:

Here you will find other useful information and every notebook with this GPU that we’ve tested:

Results are from the 3DMark: Fire Strike (Graphics) benchmark (higher the score, the better)


Although the laptop isn’t made for extended and extreme workloads, we ran the usual stress tests on the CPU and iGPU to see how the cooling system performs and is it reliable enough to withstand long hours of use over time.

As usual, we start off with 100% CPU load for an hour. The Core i5-7200U reached its maximum operating frequency for two active cores and stayed there. Temperatures were in the safe zone while the cooling fan stayed exceptionally silent during the whole hour.

After switching on the GPU stress test, the CPU’s frequency dropped to around 2.2 GHz so it can give enough headroom for the iGPU (Intel HD Graphics 620) to perform. The system didn’t ramp up the cooling fan and it remained silent until the end of the test.

As expected, temperatures on the surface were also low since the Core i5-7200U isn’t such a demanding CPU. What really surprised us is the silent operation of the cooling system even under heavy workload. During normal use, though, the fan was completely silent.


To put thing simple and clear, the ProBook 640 G3 is an excellent business-oriented machine rightfully defending the name of the ProBook lineup. However, it does that at a fairly high price. Yet again, it focuses on what’s important and what the general business user would want.

The build quality is really good, despite using only plastic, and the input devices are excellent. Portability is a bit of a miss, though, as there are plenty of other more portable 14-inch solutions out there at the same price. The I/O is another mixed bag – plenty of connectors but they are all stuck on the right so all of the cables might get in the way sometimes. The inclusion of 4G LTE connectivity is another great plus to consider.

As far as battery life goes, thanks to the energy-efficient TN display and CPU, the laptop has killer battery life – one of the best in class. And speaking of screen, the latter is a big disappointment considering the price tag of this thing. The maximum brightness is pretty high, especially for a TN panel, the sRGB coverage is okay but we cannot overlook the aggressive PWM, extremely bad color accuracy, surprisingly bad color temperature and low contrast ratio. Nevertheless, the PWM, color accuracy and white point can be fixed using our profiles but you can never escape the poor contrast and bad viewing angles.

And finally, the limited storage upgradability will most likely be a deal-breaker for some. You can only go with an M.2 PCIe NVMe SSD or 2.5-inch HDD/SSD but not both at the same time. It’s funny how a considerably more portable 14-inch laptop like the ASUS ZenBook UX410 packs both slots and also has superior image quality. Although in an entirely different category, we honestly can’t think of a reason why you would go for the ProBook 640 G3 instead of the ZenBook UX410. The Acer Swift 5 is another great 14-inch option in the same ballpark when it comes to pricing. Still, if you are looking for a more classical business approach, the Lenovo ThinkPad E470 would be a much better option with superior IPS display, slightly more portable and similar overall user experience.

You can find the available configurations here:


  • Good build quality
  • Great input devices
  • The display has high brightness and decent sRGB coverage for a TN panel
  • Outstanding battery life
  • Plenty of I/O, including 4GB LTE connectivity


  • Display with limited viewing angles, extremely low contrast and inaccurate color reproduction (our profiles take care of the latter)
  • Aggressive PWM (200 Hz) (our Health-Guard profile fixes that)
  • A bit hefty for a 14-incher
  • Pricier than the competition
  • The M.2 SSD obstructs the insertion of a 2.5-inch HDD/SSD and vice versa