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Comparison Apple iMac 21.5" 2017 MMQA2 vs Lenovo IdeaCentre AIO 720 24 720-24IKB F0CM0018UA

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Apple iMac 21.5" 2017 (MMQA2)
Lenovo IdeaCentre AIO 720 24 (720-24IKB F0CM0018UA)
Apple iMac 21.5" 2017 MMQA2Lenovo IdeaCentre AIO 720 24 720-24IKB F0CM0018UA
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Main
Slim aluminium body. 6 USB ports. USB-C with Thunderbolt support. Wireless mouse and keyboard. Speaker and webcam quality.
Product typemonoblockmonoblock
Screen
Screen size21.5 "23.8 "
Resolution1920x1080 (16:9) px1920x1080 (16:9) px
Panel typeIPSIPS
Surface treatmentglossanti-glare
Slim bezel
CPU
Typeportabledesktop
SeriesCore i5Core i5
Model7360U7400
Cores24
Threads4
Speed2.3 GHz3 GHz
TurboBoost / TurboCore3.6 GHz3.5 GHz
L2 cache512 KB1024 KB
L3 cache4 MB6 MB
Passmark CPU Mark4392 score(s)
Geekbench 49228 score(s)
Cinebench R15354 score(s)
Memory
RAM8 GB8 GB
Memory typeDDR4DDR4
Speed2133 MHz2133 MHz
Number of slotsbuilt-in2
Graphics card
Graphics card typeintegrateddedicated
Graphics card modelIris Plus Graphics 640GeForce GTX 960A
Graphics memory2 GB
Memory typeGDDR5
Storage
Drive typeHDDHDD
Drive capacity1000 GB1000 GB
Rotational latency5400 rpm7200 rpm
Back panel
Connectors
 
HDMI output
USB 2.02
USB 3.2 gen141
USB C 3.2 gen22
Thunderboltv3 2 pcs
Front Panel
Optical driveis absentis absent
mini-Jack (3.5 mm)
USB 3.2 gen11
Card reader
 /SDXC/
 /6 в 1/
Multimedia
LAN (RJ-45)1 Gbps1 Gbps
Wi-FiWi-Fi 5 (802.11aс)Wi-Fi 5 (802.11aс)
Bluetooth
 /v 4.2/
 /v 4.0/
Sound2.02.0
Speakers
Built-in microphone
Webcam
 /FaceTime HD camera/
Kensington / Noble lock
General
Keyboard and mouse+
Preinstalled OS
MacOS /Sierra/
Windows 10 Home /Home/
Material
aluminium /anodized/
plastic
Dimensions (HxWxD)450х528х175 mm438.2x525x209.7 mm
Weight5.66 kg9.15 kg
Color
Added to E-Catalogjune 2017june 2017

Screen size

Diagonal of the screen installed in a monoblock (see "Type").

In general, the larger the diagonal, the more advanced both the screen and the computer as a whole are considered. The large display size is convenient for games, movies, and some special tasks like layout of large printed materials; in addition, a higher resolution can be provided for such a screen, and more space is available inside the case for advanced components. On the other hand, a larger monoblock will cost much more than a relatively small one, even if the other characteristics of such models are completely the same. In addition, the power of the hardware is not directly related to the size of the screen — high-end monoblocks can be quite small.

As for specific numbers, a diagonal of 20" or less is considered very limited nowadays, monoblocks of 21.5" are small, a 24" screen is medium, and values of 27" and 32" indicate large sizes.

Surface treatment

Type of own screen cover in monoblock (see "Type").

Glossy. The most common type of coating in modern PCs. Such a surface (with the same characteristics of the matrix) noticeably surpasses the matte one in terms of brightness and colour saturation in the visible image. The main disadvantage of gloss is the tendency to glare in bright ambient light; however, all-in-one PCs are not often used in such conditions, and this phenomenon can be compensated by increasing the brightness of the backlight. With all this, this type of coverage is quite inexpensive.

Glossy (anti-glare). A modified version of the glossy finish (see above) that, as the name suggests, is more resistant to glare. At the same time, in terms of picture quality, such screens are usually not inferior to classic gloss. On the other hand, the anti-reflective surface is somewhat more expensive, and its advantages in this case are not often really significant. Therefore, screens with such a coating are found in modern monoblocks much less often than glossy ones.

Matte. The key advantages of a matte finish are its low cost and the almost complete absence of glare, even in bright ambient light. On the other hand, the image on such a screen is dimmer than on glossy displays (including anti-glare) with similar matrix characteristics. Therefore, this type of coating is rarely used...nowadays — mainly in relatively inexpensive household and business models, for which a bright picture with saturated colours is not fundamental.

Slim bezel

The presence of a thin frame in the monoblock's own screen (see "Type"). More precisely, we are talking about the top and sides of the frame; the lower part inevitably turns out to be quite wide, this is due to the technical features of this type of PC. However, even this layout significantly improves the overall impression of the image: due to the peculiarities of human vision, it seems that the “picture” occupies the entire front panel of the device, and the frame is almost invisible. On the other hand, such screens are not cheap.

Type

The general type (specialization) of the processor installed in the PC.

Desktop. Processors originally designed for full-sized desktop computers. The specific characteristics of such CPUs can vary quite widely; however, in general, they have higher processing power than mobile chips, as well as a wider range of additional features and special solutions to improve efficiency. And with the same actual performance, desktop solutions are much cheaper than mobile ones. The downside of these advantages is the relatively high energy consumption and heat dissipation. However, for full-sized PCs, these shortcomings are not critical, so almost all traditional desktop computers, as well as most all-in-ones (see "Type") are equipped with this particular type of processor; and for powerful gaming models, a desktop CPU is mandatory by definition. On the other hand, this category also includes rather economical and "cold" low-power chips, which are suitable for compact computers that do not require high performance, such as nettops and thin clients.

Mobile. This term in this case refers to processors originally designed for laptops. Most of these CPUs use the same basic architecture as desktop models — x86. Their main differences are: on the one hand, reduced energy consumption, reduced clock frequencies and low heat generation, on the other hand, less computing power in general. However the actu...al characteristics of such processors may vary from model to model, some laptop solutions are not inferior to fairly advanced desktop ones; however, with similar capabilities, a laptop processor will cost significantly more. Thus, this type of CPU is mainly used in nettops and individual models of monoblocks (see "Type"), where it is difficult to use powerful cooling systems.
A rarer variety of mobile processors used in modern PCs are chips based on the basic ARM architecture. Such processors have even lower heat dissipation and power, and are also often implemented in the System-On-Chip format, when the CPU itself, RAM, wired and wireless connection controllers, and other components are combined in one chip. ARM solutions can be found in Android touchscreen all-in-ones (which are effectively "desktop tablets"), as well as in individual thin clients.

Model

The specific model of the processor installed in the PC, or rather, its index within its series (see "Processor"). The full model name consists of the series name and this index — for example, Intel Core i3 3220; knowing this name, you can find detailed information about the processor (characteristics, reviews, etc.) and determine how suitable it is for your purposes.

Cores

The number of cores in a complete PC processor.

The core is a part of the processor designed to process one stream of commands (and sometimes more, for such cases, see "Number of threads"). Accordingly, the presence of several cores allows the processor to work simultaneously with several such threads, which has a positive effect on performance. However note that a larger number of cores does not always mean higher computing power — a lot depends on how the interaction between command streams is organized, what special technologies are implemented in the processor, etc. So, only chips of the same purpose (desktop, mobile) and similar series (see "Processor") can be compared by the number of cores.

In general, single-core processors are practically not found in modern PCs. Mainly desktop chips of the initial and middle level are made dual-core. Four cores are found both in desktop CPUs of the middle and advanced class, and in mobile solutions. And six-core and eight-core processors are typical for high-performance desktop processors used in workstations and gaming systems.

Threads

The number of threads supported by the bundled PC processor.

A thread in this case is a sequence of instructions executed by the kernel. Initially, each individual core is able to work with only one such sequence. However, among modern CPUs, more and more often there are models in which the number of threads is twice the number of cores. This means that the processor uses multi-threading technology, and each core works with two instruction sequences: when pauses occur in one thread, the core switches to another, and vice versa. This allows you to significantly increase performance without increasing the clock frequency and heat dissipation, however, such CPUs are also more expensive than single-threaded counterparts.

Speed

Clock speed of the CPU installed in the PC.

In theory, higher clock speeds have a positive effect on performance because they allow the CPU to perform more operations per unit of time. However, this indicator is rather weakly related to real productivity. The fact is that the actual capabilities of the CPU strongly depend on a number of other factors - the overall architecture, cache size, number of cores, support for special instructions, etc. As a result, you can compare by this indicator only chips from the same or similar series (see “CPU”), and ideally, also from the same generation. And that's pretty approximate.

TurboBoost / TurboCore

Processor clock speed when running in TurboBoost or TurboCore mode.

Turbo Boost technology is used in Intel processors, Turbo Core — AMD. The essence of this technology is the same both there and there: if some of the cores work under high load, and some are idle, then some tasks are transferred from more loaded cores to less loaded ones, which improves performance. This usually increases the clock frequency of the processor; this value is indicated in this paragraph. See above for more information on clock speed in general.
Apple iMac 21.5" 2017 often compared