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HP ProBook 640 G2, Corei5 6th Gen, Ram 8GB, HDD 500GB, Screen 14 inch Touch

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Product Description

Brand                                      HP

Series HP. ProBook

Model  Probook 640 G2

OS Version                         Windows 10

Processor                           Core i5 6th Generation

Processor Speed                 6200U Core i5 2.3GHz upto 2.8GHz

Processor Cache                 3 MB

Ram                                  8 GB

Ram Type                          DDR4

Max Ram                           32GB

Hard Disk                          500GB

Optical Drive                     Multiformat DVD Super Drive

Screen Size                       14 inch Touch Screen

Screen Resolution              1366 x 768 HD LED

Graphics Card                    Intel Integrated Graphics

Graphics Card Details        Intel HD 520

Graphics Card Memory       System Shared

Finger Print Reader            No

Backlit Keyboard               No

Bluetooth                         Yes

Lan                                Yes

Wifi                                 Yes

HDMI                              Display Port

VGA Port                         Yes

Webcam                          Yes, HD Cam

USB 3                             2 Ports

USB Type C                     1 Port

Warranty                        7 Days Check Warranty

HP ProBook 640 G2 Notebook Review

For the original German review, see here.

HP's ProBook 600 lineup is situated below the EliteBook 800 series, which allows entering the world of premium-range business laptops at a comparatively affordable price. A 14-inch (ProBook 640) and 15-inch (ProBook 650) model are available. This test will focus on the first of the two.

The second iteration of the ProBook 640 range ("G2" generation) is based on the current model of Intel's Skylake platform. HP primarily installs the medium-priced i5 CPUs such as the Core i5-6200U here. The configuration of 4 GB of RAM and a 500 GB HDD adds up to a starting price of roughly 750 Euros (~$838). 1150 Euros (~$1286) is demanded for our review sample with twice the storage capacity, a 256 GB SSD, and an LTE module. The processor-integrated HD Graphics 520 is responsible for outputting images on the 14-inch, Full HD panel - dedicated graphics chips are not offered for the ProBook.


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HP ProBook 640 G2-T9X60ET
Intel Core i5-6200U 2 x 2.3 - 2.8 GHz, Skylake
Graphics adapter
Intel HD Graphics 520, Core: 1000 MHz, Memory: 1066 MHz,
8 GB  
, 1x 8 GB DDR4-2133, 1 of 2 slots filled
14.00 inch 16:9, 1920 x 1080 pixel 157 PPI, Chi Mei CMN14C0, TN panel, LED backlight, glossy: no
Intel Skylake-U Premium PCH
Samsung SSD PM871 MZNLN256HCHP, 256 GB  
1.95 kg ( = 68.78 oz / 4.3 pounds), Power Supply: 305 g ( = 10.76 oz / 0.67 pounds)


Although the ProBook lineup looks quite stylish in its black-silver coloring, the design looks a bit outdated. That is primarily due to the rather bulky build with a height of 27 millimeters which even exceeds that of the not exactly slim ThinkPad L460 (24 millimeters). The weight of almost 2 kilograms is also quite high for current standards - Toshiba's Tecra Z40 does not even weigh 1.5 kilograms by comparison. At the same time, it has to be acknowledged that HP's laptop sports an optical drive that none of the rivals offer.

The manufacturer has largely opted for simple plastic in choice of materials, but it makes a solid impression. The chassis resists pin-point pressure without complaint; quiet cracking is sometimes first heard under higher force. We can call the build quality overall decent: Although gaps between single parts are visible to some degree, they are even and not overly wide.

Despite agreeably tight hinges that only rock for a moment after shocks, the screen can only be opened to 180 degrees with one hand. The lid, unfortunately, does not quite match the base unit's stiffness. The display already dents visibly in the area of the manufacturer's logo visibly, and its torsional stiffness could be a bit higher. In total, HP quite fulfills the expectations placed on a device of this price range - higher quality is found in the considerably more pricey EliteBook series.

Size Comparison

340 mm / 13.4 inch237 mm / 9.33 inch27 mm / 1.063 inch2 kg4.3 lbs339 mm / 13.3 inch235 mm / 9.25 inch24.3 mm / 0.957 inch1.9 kg4.25 lbs338 mm / 13.3 inch236 mm / 9.29 inch20.4 mm / 0.803 inch1.5 kg3.24 lbs335 mm / 13.2 inch231 mm / 9.09 inch23 mm / 0.906 inch1.8 kg4.03 lbs297 mm / 11.7 inch210 mm / 8.27 inch1 mm / 0.03937 inch5.7 g0.01257 lbs


In the course of refreshing the ProBook 640, HP has extended the connectivity by a modern USB Type-C port (USB 3.1 Gen 1), but it has also, regrettably, axed two of the until now four USB 3.0 ports. The most aggravating thing here is that all interfaces are situated on the right. This is just as true for the Gbit LAN, headset, power socket, DisplayPort (4K suitable), and docking station port. From an ergonomic point of view, this is not really an ideal solution for users who connect a lot of peripherals and use a mouse on the laptop's right. Solely a VGA-out is situated on the device's rear.

HP offers the "UltraSlim-Dock" (D9Y32AA) for approximately 120 Euros (~$134) as the matching docking station.

Front: no interfacesFront: no interfaces
Left: Kensington lock, vent, DVD burner, SmartCard readerLeft: Kensington lock, vent, DVD burner, SmartCard reader
Rear: VGA outRear: VGA out
Right: headset jack, USB Type-C, HDMI, 2x USB 3.0, Gbit-LAN, SIM slot, docking port, power socketRight: headset jack, USB Type-C, HDMI, 2x USB 3.0, Gbit-LAN, SIM slot, docking port, power socket


Intel's Wireless-AC 8260 module adds Wi-Fi and Bluetooth functionality to the ProBook. It supports the Bluetooth 4.2 standard and Wi-Fi 802.11 a/b/g/n/ac (2.4/5 GHz) and achieves gross transmission rates of up to 866 Mbit/s (2x2 TX/RX). We managed impressive download speeds of clearly over 600 Mbit/s with our router (Linksys EA8500) in ideal transmission conditions - much more is hardly possible with modern Wi-Fi adapters. The range and connection stability did not give reason for complaint in the test, either.

Our review sample also sports an integrated Qualcomm Snapdragon X5 LTE module (max. 50 Mbit/s upload/150 Mbit/s download). The laptop's purchase price includes 200 MB data volume per month for a period of three years.

WiFi Speed Client 1m
WiFi Speed Server 1m


Security features, such as a SmartCard reader, fingerprint scanner (swype design), and TPM, are to equip the ProBook for professional use in companies. Various software features, e.g. option of securing system boot and BIOS via a password, are also available.


In addition to the aforementioned free data plan, HP also adds a matching 45-watt power supply and two DVDs (Windows 10 + driver). The ProBook is shipped with Windows 7 Professional ex-factory, but it is possible - as we did in our test - to upgrade to Windows 10. Fortunately, the 640 G2 is largely exempt from useless software that would only stuff the tight SSD storage.


Easy maintenanceEasy maintenance

The laptop's base plate is easy to remove without tools after releasing a total of eight screws. The fundamental maintenance options include expanding the working memory (two slots, one empty), replacing the SSD (2.5-inch or M.2 drive), and accessing the Wi-Fi and LTE module. It would also be possible to clean the fan and heat sink, but their accessibility is only limited without disassembling the laptop even further.


Unlike the EliteBook series that is shipped with a 3-year warranty in Germany, the ProBook lineup only comes with one year. Optional warranty packages dubbed "Care Pack" by HP allow upgrading both period and scope of services. An extension to a 3-year on-site service for the next business day including phone support, for example, costs approximately 220 Euros, ~$246 (U4391E).

Input Devices


Except for some minor layout modifications HP has left the keyboard virtually untouched compared with the predecessor. There was no need for reworking the good keyboard fundamentally anyway. The stroke is well-defined and crisp and firm, the stability is also convincing in the center, and the noise development is restrained even when typing energetically. However, we would wish for a slightly concave key surface and an optional backlight for ergonomic reasons. Compared with current ThinkPads, the ProBook also offers a somewhat shorter drop - whether this is positive or negative remains to be a matter of taste.


A 9.8 x 5 centimeter-sized touchpad by Synaptics serves as the mouse replacement. The TrackPoint popular among many users is again reserved for the higher-priced EliteBook 800 series. This shortcoming can be ignored easily thanks to the good gliding properties, impeccable accuracy, and its high responsiveness to multitouch gestures, and an external mouse will not inevitably be needed. We would also like to highlight both dedicated mouse keys that, with their clearly defined pressure point, are much more reliable than the fully integrated ClickPad solutions in some rivals.



Pixel gridPixel grid

While the ProBook 640 G2 is available with a simple WXGA panel (1366x768 pixels) in other markets, HP presently only installs a high-resolution Full HD screen (1920x1080 pixels) in Germany. Alongside a screen diagonal of exactly 14.0 inches, this results in a pixel density of a pleasingly high 157 PPI that ensures a sharp yet not too small image reproduction. Users with normal eyesight should be able to recognize fine fonts and symbols well without increasing the scaling factor.

Besides the higher resolution, the Full HD panel also promises a stronger backlight. With a whole 304 cd/m² distributed very evenly over the entire screen area, our review sample, in fact, does an excellent job here and outruns all rivals by far. A small minus point is only found in the screen's PWM control (200 Hz, all brightness levels below maximum). This can cause headaches or dizziness in very sensitive users - the devices from Lenovo, Dell and Toshiba at least did not exhibit this issue in the tested configurations.

Distribution of brightness
Chi Mei CMN14C0
X-Rite i1Pro 2
Maximum: 315 cd/m² (Nits) Average: 303.8 cd/m² Minimum: 15 cd/m²
Brightness Distribution: 93 %
Center on Battery: 321 cd/m²
Contrast: 516:1 (Black: 0.61 cd/m²)
ΔE Color 8.8 | 0.55-29.43 Ø5.1
ΔE Greyscale 9.44 | 0.57-98 Ø5.4
74.78% sRGB (Argyll 1.6.3 3D)
47.37% AdobeRGB 1998 (Argyll 1.6.3 3D)
51.2% AdobeRGB 1998 (Argyll 2.2.0 3D)
74.6% sRGB (Argyll 2.2.0 3D)
49.54% Display P3 (Argyll 2.2.0 3D)
Gamma: 2.53

The ProBook is different than most rivals in another aspect: HP is the only manufacturer that does not rely on a high-quality IPS panel for its Full HD screen but normally installs the cheaper TN technology instead. The black level (0.61 cd/m²) and contrast ratio (516:1) are at least still quite decent when looking straight at the screen - but more about that later.

First a look at the screen's color reproduction: The panel displays a massive bluish tint and a correspondingly high DeltaE shift in delivery state. Calibrating improves the reproduction tremendously and the average DeltaE rates drop to an outstanding 1.1 (grayscale) and 1.7 (colors). Unfortunately, the available color space only covers the sRGB standard by not quite 75%, which is definitely too little for professional photo and image editing.

Grayscale (pre-calibration)Grayscale (pre-calibration)
ColorChecker (pre-calibration)ColorChecker (pre-calibration)
Saturation Sweeps (pre-calibration)Saturation Sweeps (pre-calibration)
Grayscale (post-calibration)Grayscale (post-calibration)
ColorChecker (post-calibration)ColorChecker (post-calibration)
Saturation Sweeps (post-calibration)Saturation Sweeps (post-calibration)

Thanks to the screen's anti-glare surface and its maximum brightness of over 300 cd/m², which is also available in battery mode, the ProBook can be unconditionally recommended for outdoor use. In particular, the Latitude E5470 is weak here. However, it is offered with a much brighter IPS panel for a surcharge.

Outdoors (shade)

Display Response Times

Display response times show how fast the screen is able to change from one color to the next. Slow response times can lead to afterimages and can cause moving objects to appear blurry (ghosting). Gamers of fast-paced 3D titles should pay special attention to fast response times.
       Response Time Black to White
24 ms ... rise ↗ and fall ↘ combined ↗ 17.6 ms rise
↘ 6.4 ms fall
The screen shows good response rates in our tests, but may be too slow for competitive gamers.
In comparison, all tested devices range from 0.1 (minimum) to 240 (maximum) ms. » 45 % of all devices are better.
This means that the measured response time is similar to the average of all tested devices (22.1 ms).
       Response Time 50% Grey to 80% Grey
43.2 ms ... rise ↗ and fall ↘ combined ↗ 21.6 ms rise
↘ 21.6 ms fall
The screen shows slow response rates in our tests and will be unsatisfactory for gamers.
In comparison, all tested devices range from 0.25 (minimum) to 636 (maximum) ms. » 67 % of all devices are better.
This means that the measured response time is worse than the average of all tested devices (34.9 ms).

Screen Flickering / PWM (Pulse-Width Modulation)

To dim the screen, some notebooks will simply cycle the backlight on and off in rapid succession - a method called Pulse Width Modulation (PWM) . This cycling frequency should ideally be undetectable to the human eye. If said frequency is too low, users with sensitive eyes may experience strain or headaches or even notice the flickering altogether.
Screen flickering / PWM detected 200 Hz ≤ 90 % brightness setting

The display backlight flickers at 200 Hz (Likely utilizing PWM) Flickering detected at a brightness setting of 90 % and below. There should be no flickering or PWM above this brightness setting.

The frequency of 200 Hz is relatively low, so sensitive users will likely notice flickering and experience eyestrain at the stated brightness setting and below.

In comparison: 53 % of all tested devices do not use PWM to dim the display. If PWM was detected, an average of 18961 (minimum: 5 - maximum: 3846000) Hz was measured.

Viewing angles: HP ProBook 640 G2Viewing angles: HP ProBook 640 G2

Finally, we will look at the 640 G2's biggest points of criticism: The insufficient viewing-angle stability. The aforementioned contrast and color accuracy rates are only valid when looking at the screen from an absolutely straight angle. The slightest shifts drastically distort the image impression. If HP used an IPS panel like other manufacturers, then this problem would be considerably less prominent - and the user would not have to permanently adjust the tilting angle according to the present seating position.


2.8 GHz - maximum Turbo clock rate2.8 GHz - maximum Turbo clock rate

Slowly but surely, Intel's new Kaby Lake generation casts its shadow ahead - the first scions could already be presented as early as September. Until then, customers and manufacturers will have to be satisfied with the current Skylake product range. HP opted for the popular Core i5-6200U mid-range model. Its two cores clock at 2.3 to 2.8 GHz with Hyper-Threading (2 cores: 2.7 GHz). Being a ULV model, the 6200U is specified with a TDP of just 15 watts.

In addition to CPU cores, memory controller, and I/O interfaces, the chip (which is actually an MCM) also integrates a graphics unit dubbed HD Graphics 520. Being a medium GPU expansion stage (GT2), it clocks at 300 to 1000 MHz and has 24 execution units (EUs). The performance can even compete with some dedicated, low-end accelerators depending on the memory configuration.

However, the manufacturer only installs a DDR4-2133 module with a capacity of 8 GB ex-factory, which lowers the graphics performance slightly as a consequence of the resulting single-channel interface. A 256 GB M.2 SSD by Samsung serves as the storage device.


Full Turbo Boost in single...Full Turbo Boost in single...
...and multithreading....and multithreading.

The ProBook does not have problems utilizing the Core i5-6200U's full Turbo Boost headroom and not only thanks to its bulky casing. A stable 2.8 GHz is achieved in the single-thread benchmarks, and it is still 2.7 GHz when both cores are loaded - in both AC and battery modes. The performance is correspondingly good. Devices furnished with the more expensive Core i5-6300U and Core i7-6500U models can only surpass the 640 G2 by approximately 5 to 10%. The Core i7-6600U, which is presently the top model, calculates a good 20% faster in ideal conditions (increased TDP limits). Although these differences are measurable, they are hardly noticed in routine use. HP has made a reasonable decision with the 6200U from a price-performance point of view.

AS SSD benchmarkAS SSD benchmark

The PM871 M.2 SSD by Samsung has a capacity of 256 GB, which is the medium-priced version with a SATA interface. With sequential transfer rates of approximately 500 MB/s in read and almost 300 MB/s in write, its performance is roughly on par with comparable drives by Toshiba or Liteon that are found, for example, in Lenovo and Dell laptops. In return, the PM871 has a slight lead on its rivals when dealing with smaller 4K files and multi-parallel accesses. Samsung's SSDs also have the reputation of being particularly reliable - thus, we can again congratulate Samsung for making a good decision in terms of components.


System Performance

The laptop gives a superb performance even without a pricey i7 chip and proves to be a powerful and responsive office device. Therefore, the minor lag in PCMark compared with (mostly better equipped and more expensive) rivals should not be overrated. Expanding the working memory with a second 8 GB module could at most be considered when extreme multitasking is routine. That would also activate dual-channel mode, which would boost the (graphics) performance. Very performance-centered users should take a closer look at the Latitude 14 E5470 that is the only laptop in this category that principally carries quad-core CPUs from the standard voltage division. However, Dell does not offer corresponding configurations everywhere.


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