Comparison Asus ExpertBook B3 B3404CMA [B3404CMA-QN0294] vs Asus ExpertBook B3 B3604CMA [B3604CMA-QY0336]

General device type.

In addition to traditional laptops, nowadays you can find varieties such as netbooks, ultrabooks, 2 in 1 tablet laptops and transformers. Here are their main features:

— A laptop. Laptops of a more or less traditional format that do not belong to any of the specific categories described below. The classic, most popular screen size in these models is 15.6 ". 13.3" and 14" laptops are considered compact, laptops with a 17.3" screen are large-format, and larger displays are found in advanced gaming models. At the same time, devices from this category are also very diverse in terms of characteristics and capabilities: they range from “typewriters” designed for education and home tasks, to high-end gaming solutions, and workstations and multimedia complexes.

— Ultrabook. High-end laptops that combine compactness, light weight and advanced features. The diagonal in ultrabooks ranges from 11 "to 14", the thickness of the case does not exceed 21 mm, while the internal equipment usually includes powerful processors, a large amount of RAM, fast drives like SSD and other similar solutions. In addition, many devices from this category are made in a characteristic stylish design and are also designed for...the role of fashion accessories.

— Transformer 360°. Another type of laptop that can turn into a tablet. However, unlike the laptops-tablets described above, in this case, not a removable keyboard is used, but a special swivel connection of the upper and lower blocks. The design of this connection is such that the top of the device can be rotated 360° and placed face up on the keyboard. Thus, the transformer can be converted from a laptop to a tablet without removing the bottom half; this is the fundamental difference between such models and the “2-in-1” described above. This format of work is generally more convenient — no need to look for a place for the removed keyboard, there is no risk of forgetting or losing it; in addition, the mounting design usually allows you to use the device in the format of a “photo frame” — an inclined tablet on a stand without a keyboard. Thus, transformers have become more widespread today than collapsible laptops-tablets. Their disadvantages include the inability to reduce weight by removing the keyboard. The diagonal of such devices can be from 12" to 17".

— 2 in 1 (laptop-tablet). Laptops that can turn into tablets. In such models, the entire “hardware” (or at least its key components) is placed in the upper half, the screen is made touch-sensitive, and the lower half with the keyboard can be completely separated. From traditional tablets, which can also be equipped with keyboards, such devices differ in three main points. The first is more powerful hardware: in particular, most 2-in-1 models carry full-fledged laptop processors (up to and including Core i7), while tablets mainly use CPUs similar to smartphone chips. The second point is a larger screen size, usually 13 – 15". The third caveat is that the keyboard of a laptop-tablet can include not only a set of keys and a spare battery, but also some system components: a discrete graphics card, an additional drive, etc. .
In general, 2-in-1 models are more versatile than traditional laptops; however, nowadays they are much less common than another similar type of laptop — transformers (see below). This is due to the fact that the removable keyboard is not always convenient: when using a device in tablet format, it usually has to be removed; it is not always possible to find a place nearby for the removed keyboard; besides, it can be forgotten or lost through inattention. However, this design also has advantages: for example, if there is enough tablet on the road, there is no need to carry additional cargo in the form of the lower half of the device.

Diagonal size of laptop display.

The larger the screen, the more convenient the laptop for watching high-definition movies, modern games, working with large-format graphic materials, etc. Large screens are especially important for multimedia and gaming models. On the other hand, the diagonal of the display directly affects the size and cost of the entire device. So if portability is key, it makes sense to pay attention to relatively small solutions; especially since most modern laptops have video outputs like HDMI or DisplayPort and allow connection of large-format external monitors.

In light of all this, the actual maximum for laptops these days is 17"(17.3"); however larger devices (18") reappeared at the beginning of 2023. The standard option for general purpose laptops is 15"(15.6"), less often 16", a diagonal of 13"(13.3") or 14" is considered small by the standards of such And smaller screens can be found mainly in specific compact varieties of laptops — ultrabooks, 2 in 1, transformers, netbooks; among such devices there are solutions for 12 ", 11" and even 10" or less.

The technology by which the matrix of the laptop is made.

Matrices of the TN+film, IPS and *VA types are most widely used nowadays; less common are screens like OLED, AMOLED, QLED, miniLED, as well as more specific solutions like LTPS or IGZO. Here is a more detailed description of all these options:

— TN-film. The oldest, simplest and most inexpensive technology currently in use. The key advantages of this type of display are low cost and excellent response time. On the other hand, such matrices are not of high image quality: brightness, colour fidelity and viewing angles of TN-film screens are at an average level. These indicators are quite enough for working with documents, web surfing, most games, etc.; however, for more serious tasks that require a high-quality and reliable picture (for example, design or photo / video colour correction), such screens are practically unsuitable. Thus, TN-film matrices are relatively rare nowadays, mainly among low-cost laptops; more advanced devices are equipped with better screens, most often IPS.

— IPS (In-Plane Switching). The most popular type of matrix for laptops in the middle and top price range; however, it is increasingly common in low-cost models, and for trans...formers and 2-in-1 devices (see "Type") it is almost a standard option. Screens of this type are noticeably superior to TN-film in terms of the quality of the “picture”: they provide a bright, reliable and rich image that hardly changes when the viewing angle changes. In addition, this technology allows to achieve extensive colour gamuts in various special standards (see below) and is suitable for creating displays with advanced features such as HDR support or Pantone / CalMAN certification (also see below). Initially, IPS matrices were expensive and had a slow response time; however, nowadays, various modifications of this technology are used, in which these shortcomings are fully or partially compensated. At the same time, different modifications may differ in practical characteristics: for example, some are created based on the maximum reliability of the picture, others differ in affordable cost, etc. So it's ok to clarify the actual characteristics of the IPS screen before buying — especially if you plan to use a laptop for specific applications where image quality is critical.

— *V.A. Various modifications of matrices of the "Vertical Alignment" type: MVA, PVA, Super PVA, ASVA, etc. The differences between these technologies are mainly in the name and the manufacturer. Initially, matrices of this type were developed as a compromise between IPS (high-quality, but expensive and slow) and TN-film (fast, inexpensive, but modest in image quality). As a result, *VA screens turned out to be more affordable than IPS and more advanced than TN-film — they have good colour reproduction, deep blacks and wide viewing angles. At the same time, it is worth noting that the colour balance of the picture on such a display changes somewhat when the viewing angle changes. This makes it difficult to use *VA matrices in professional colour work. In general, this option is designed mainly for those who do not need perfect colour accuracy and at the same time want to see a bright and colorful image.

— OLED. Matrices based on the so-called organic light-emitting diodes. The key feature of such displays is that in them each pixel is a source of light in itself (unlike classic LCD screens, in which the backlight is made separately). This design principle, combined with a number of other solutions, provides excellent brightness, contrast and colour reproduction, rich blacks, the widest possible viewing angles and a small thickness of the screens themselves. On the other hand, laptop OLED matrices for the most part turn out to be quite expensive and “gluttonous” in terms of energy consumption, and they wear out unevenly: the more often and brighter a pixel glows, the faster it loses its working properties (however, this phenomenon becomes noticeable only after several years of intensive use). In addition, for a number of reasons, such screens are considered poorly suited for gaming applications. In light of all this, sensors of this type are rare these days — mostly in individual high-end laptops designed for professional colour work and with appropriate features such as HDR support, wide colour gamut and/or Pantone / CalMAN certification (see below).

— AMOLED. A kind of matrices on organic light-emitting diodes, created by Samsung (however, it is also used by other manufacturers). In terms of its main features, it is similar to other types of OLED matrices (see above): on the one hand, it allows you to achieve excellent image quality, on the other hand, it is expensive and wears out unevenly. At the same time, AMOLED screens have even more advanced colour performance combined with better power optimization. And the low prevalence of this technology is mainly due to the fact that it was originally created for smartphones and only recently began to be used in laptops (since 2020).

— MiniLED. Screen backlight system on a substrate of miniature LEDs with a size of about 100-200 microns (µm). On the same display plane, it was possible to increase the number of LEDs several times, and their array is placed directly behind the matrix itself. The main advantage of miniLED technology can be called a large number of local dimming zones, which in total gives improved brightness, contrast and more saturated colors with deep blacks. MiniLED screens unlock the potential of High Dynamic Range (HDR) technology, suitable for graphic designers and digital content creators.

— QLED. Matrices on "quantum dots" with a redesigned LED backlight system. In particular, it provides the replacement of multilayer colour filters with a special thin-film coating of nanoparticles. Instead of traditional white LEDs, QLED panels use blue ones. As a result, a set of design innovations makes it possible to achieve a higher brightness threshold, colour saturation, improve the quality of colour reproduction in general, while reducing the thickness of the screen and reducing power consumption. The reverse side of the QLED-matrices coin is an expensive cost.

— PLS. A type of matrix developed as an alternative to the IPS described above and, according to some sources, is one of its modifications. Such matrices are also characterized by high colour rendering quality and good brightness; in addition, the advantages of PLS include good suitability for high-resolution screens (due to high pixel density), as well as lower cost than most IPS modifications, and low power consumption. At the same time, the response speed of such screens is not very high.

— LTPS. An advanced type of TFT-matrix, created on the basis of the so-called. low temperature polycrystalline silicon. Such matrices have high colour quality, and are also well suited for screens with high pixel density — in other words, they can be used to create small displays with very high resolution. Another advantage is that part of the control electronics can be built directly into the matrix, reducing the overall thickness of the screen. On the other hand, LTPS matrices are difficult to manufacture and expensive, and therefore are found mainly in premium laptops.

— IGZO. An LCD technology that uses a semiconductor material based on indium, gallium, and zinc oxides (as opposed to more traditional amorphous silicon). This technology provides fast response time, low power consumption and very high colour quality; it also achieves high pixel densities, making it well-suited for ultra-high resolution screens. However, while such displays in laptops are extremely rare. This is explained both by the high cost and by the fact that rather rare metals are used in the production of IGZO matrices, which makes large-scale production difficult.

HDR technology format supported by the laptop.

This technology is designed to expand the range of brightness reproduced by the laptop screen; Simply put, an HDR screen will display brighter whites and darker blacks than a regular matrix. In fact, this can significantly improve image quality. First, the expansion of the dynamic range contributes to the brightness and fidelity of colours on the screen; secondly, the visibility of individual details in very bright or very dark areas of the frame is preserved (whereas on a normal screen such details often “sink” in solid white or black).

Note that in order to fully use this function, you need not only a laptop with HDR, but also the corresponding content (video files recorded in HDR, games where this technology is implemented, etc.). In addition, the laptop must support the HDR format used by the content being played. Nowadays, you can find such options:

— HDR10. Historically the first of the consumer HDR formats, less advanced than those described below, but extremely widespread. In particular, HDR10 is supported by almost all streaming services that provide HDR content at all, and it is also common for Blu-ray discs. Allows you to work with a colour depth of 10 bits (hence the name). At the same time, devices of this format are also compatible with content in HDR10 +, although its quality will be limited by the capabilities of the original HDR10.

...— HDR10+. An improved version of HDR10. With the same colour depth (10 bits), it uses the so-called dynamic metadata, which allows transmitting information about the colour depth not only for groups of several frames, but also for individual frames. This results in an additional improvement in colour reproduction.

Dolby Vision. An advanced standard used particularly in professional cinematography. Allows you to achieve a colour depth of 12 bits, uses the dynamic metadata described above, and also makes it possible to transmit two image options at once in one video stream — HDR and normal (SDR). At the same time, Dolby Vision is based on the same technology as HDR10, so in laptops it is almost guaranteed to be combined with at least HDR10, and even with HDR10 +.

VESA DisplayHDR certified, which corresponds to a screen that supports HDR technology.

See above for more details on this technology. And VESA DisplayHDR is an open standard that defines the overall image quality on an HDR screen by a number of parameters — brightness, colour depth, etc. Based on the test results, a screen that meets the required parameters is assigned a certain certificate with a numerical designation. So, the minimum level is DisplayHDR 400, the maximum is DisplayHDR 1400 (although in laptops, as of the end of 2020, there are no screens higher than DisplayHDR 1000). The number in such a designation is indicated by the brightness that the screen must provide: for example, DisplayHDR 400 must produce at least 400 cd / m2. Accordingly, a higher number denotes more extensive display capabilities and more advanced HDR performance.

A separate case is the DisplayHDR True Black certifications. This standard was specifically created for so-called emissive displays such as OLED (see "Matrix type"), which are capable of displaying very deep blacks. The native brightness of such displays is not very high — in particular, the current DisplayHDR 400 True Black and DisplayHDR 500 True Black provide a total screen brightness of only 250 and 300 cd / m2, respectively (against 400 and 500 cd / m2 in the original standards, without the addition " True Black"). However, in terms of black transmission efficiency, such di...splays surpass conventional HDR counterparts by orders of magnitude, which gives a noticeable increase in image quality — in particular, the mentioned True Black standards with indexes 400 and 500 win even when compared with conventional DisplayHDR 1000. However, it should be taken into account that that this advantage is most noticeable in relatively dim ambient light.

The size of the M.2 SSD module (see "Drive Type") installed in the laptop. Specified in the format "width x length".

This parameter primarily allows you to evaluate the amount of space allocated for the drive, and the possibility of replacing it with a module of a different size. It is worth noting here that the M.2 standard itself allows several options for length and width, but boards with a width of 22 mm are most widely used. The length of such a board usually corresponds to one of the standard options: 30 mm, 42 mm, 60 mm, 80 mm and 110 mm.

In general, the installation of a shorter module of the same width (for example, 22x42 mm instead of 22x60 mm) does not cause problems, but the possibility of using larger components should be clarified separately — not every case allows the installation of M.2 drives with a larger one than the standard module , length. As for specific dimensions, the most common in modern laptops is M.2 22x80 mm SSDs: this size is guaranteed to allow you to change the “native” drive to almost any 22 mm standard module (except for the largest, 22x110 mm — and even for them there can be a place ). There are also smaller sizes — 22x60 mm, 22x42 mm and even 22x30 mm — but much less frequently. And here it is worth saying that the shorter the length of the SSD module, the smaller its capacity, usually.

Note that modern laptops also use M.2 modules of a different width — usually 16 mm with a length of 20 mm (16x20 mm). H...owever, this is a very rare option.

The size of an additional slot for a drive (or other peripherals) with an M.2 interface provided in a laptop.

We emphasize that in this case we are not talking about the actually installed drive, but about the size of the bay (recall, there is no drive in it initially — for more details, see "Additional M.2 connector"). Knowing this size, you can estimate the maximum dimensions of the SSD module (or other component) that can fit in this bay. It is worth noting here that the most widespread nowadays are M.2 boards with a width of 22 mm, slots in laptops are usually made for this standard width. Therefore, the main indicator that determines size compatibility is length.

For bays on laptop motherboards, the length is most often 80 mm (marking 22x80 mm). This allows you to install 22 mm M.2 boards with a length of 80 mm, 60 mm, 42 mm and 30 mm — that is, all types of such boards, except for the largest, at 110 mm. The latter, however, is not a disadvantage, since 110-mm components are rarely used in laptops. If there are several additional (free) M.2 slots and they differ in size, these data are also specified in this paragraph, for example, “22x80 / 22x42 mm”.

The resolution of the webcam installed in the laptop. Such cameras are usually placed above the display; Initially, their purpose was video communication (for example, via Skype), but other applications are also possible — recording videos, live broadcasts of certain events on the Internet, etc.

The resolution of the webcam in this case is indicated by the maximum video resolution that it supports. The most low-cost options give out only 640x480 and are not suitable for anything, except for the mentioned video communication; in the most advanced, this indicator can reach Full HD quality (1920x1080 pixels) and even Quad HD.

There are also laptops that do not have a built-in webcam. This solution allows you to protect the user from the threat of hacker attacks through the laptop's camera and minimizes the likelihood of personal data leaking.

This paragraph may specify the availability of special digital and physical security features: fingerprint or face scanners, Smart Card reader and kensington/noble lock. Here is a detailed description of these features:

— Fingerprint scanner. Fingerprint recognition device. Almost the only way to use this function is to authenticate the user — during the initial boot or unlocking of the laptop, when logging into an account, when confirming payments, etc. This authorization method is convenient because the fingerprint is always at the user's disposal, his it is impossible to forget, lose or accidentally "surrender" to an attacker, like a normal password; and forgery of a print, although possible, is very difficult. Also note that some laptops with this feature allow you to memorize several users and automatically recognize them “by touch”.

— Face scanner (FaceID). A specialized scanner for facial recognition. Note that this is not just about “recognition by photography” (any webcam is capable of this — with the appropriate software), but about full-fledged three-dimensional scanning using a special IR sensor. This allows you to achieve very accurate and reliable recognition — face scanners often surpass fingerprint sensors in these indicators. And thanks to advanced algorithms, accuracy is maintained even when facial hai...r changes, putting on and taking off glasses, and other such changes. The weak point of this function is the recognition of twins, as well as children under 13 – 14 years old, who have not yet had time to form enough individual traits. As for the application, the main purpose of FaceID is to authorize the user when logging in and various accounts, making payments, etc. Separately, we note that support for this authorization method is built into Windows Hello, a biometric recognition system built into Windows 10. However, the data from the scanner can also be used for other purposes, sometimes quite original — for example, to animate a three-dimensional muzzle on the screen, copying the user's facial expressions.

— Kensington / Noble lock. The presence of a slot on the laptop case for a special security lock. Such a lock is usually used to fasten a strong metal cable, the other end attached to a fixed or heavy object. Thanks to this, theft "on a jerk" and other similar attempts to steal a laptop become almost impossible. This feature is especially useful if the device is in the public domain, such as on a display stand in an electronics store. Note that Kensington and Noble are two different types of security locks and are not mutually compatible. And the socket on the body can be designed for either one of these standards, or both at once; this point should be clarified separately.

— Smart card slot. A device for reading contact smart cards — plastic cards with built-in microchips. It is convenient to use such cards as user identifiers and/or access keys to protect confidential information. Note that an NFC (see above) can become an alternative to this function — it also allows you to read smart cards, only contactless ones. However, contact readers are somewhat cheaper, and they are also considered more reliable and secure. So such equipment does not lose popularity among business and professional laptops; and some models are equipped with both an NFC and a slot for smart cards.