vs
vs
Apple MacBook Air (2015) 13" Intel Core i7 2.2GHz / 8GB / 128GB
Apple MacBook Pro (2018) 15" Touch Bar & Touch ID / Intel Core i9 2.9GHz / 32GB RAM / 4TB SSD
Lenovo IdeaPad Z51 15.6" Intel Core i3-5010U 2.1GHz / 4GB / 500GB
Top 40%399 points
Top 40%
Top 16%555 points
Top 16%
Top 55%301 points
Top 55%
Apple MacBook Air (2015) 13" Intel Core i7 2.2GHz / 8GB / 128GB
Apple MacBook Pro (2018) 15" Touch Bar & Touch ID / Intel Core i9 2.9GHz / 32GB RAM / 4TB SSD
Lenovo IdeaPad Z51 15.6" Intel Core i3-5010U 2.1GHz / 4GB / 500GB
Top specs and features

Apple MacBook Air (2015) 13" Intel Core i7 2.2GHz / 8GB / 128GB vs Apple MacBook Pro (2018) 15" Touch Bar & Touch ID / Intel Core i9 2.9GHz / 32GB RAM / 4TB SSD vs Lenovo IdeaPad Z51 15.6" Intel Core i3-5010U 2.1GHz / 4GB / 500GB: 62 facts in comparison

1. RAM

8GB
MSI WT72 6QN 17.3" Intel Xeon E3-1505M v5 2.8GHz / 64GB / 1TB: 64GB
32GB
4GB

2. pixel density

127ppi
Lenovo ThinkPad X1 Carbon 14" Intel Core i5 5300U 2.3GHz / 4GB / 512GB: 540ppi
220ppi
141ppi

3. resolution

1440 x 900px
Lenovo Yoga C930 13.9" UHD Intel Core i7-8550U 1.8GHz / 16GB RAM / 512GB SSD: 3840 x 2160px
2880 x 1800px
1920 x 1080px

4. internal storage

128GB
Apple MacBook Pro (2018) 15" Touch Bar & Touch ID / Intel Core i9 2.9GHz / 32GB RAM / 4TB SSD: 4000GB
4000GB
500GB

5. longer battery life

The device's battery life (when in use) as given by the manufacturer. With a longer battery life you have to charge the device less often.
14h
Asus NovaGo (TP370QL) 4GB / 64GB SSD: 22h
10h
4h

6. has a socket for a 3.5 mm audio jack

With a standard mini jack socket, you can use the device with most headphones.
Apple MacBook Air (2015) 13" Intel Core i7 2.2GHz / 8GB / 128GB
Apple MacBook Pro (2018) 15" Touch Bar & Touch ID / Intel Core i9 2.9GHz / 32GB RAM / 4TB SSD
Lenovo IdeaPad Z51 15.6" Intel Core i3-5010U 2.1GHz / 4GB / 500GB

7. RAM speed

It can support faster memory, which will give quicker system performance.
1600MHz
Asus ROG GX800VH 18" Intel Core i7 7820HK 2.9GHz / 64GB / 1TB: 2800MHz
2400MHz
1600MHz

8. Uses flash storage

Flash-based storage devices such as SSDs have no mechanical components. Due to this they are typically faster, run silently, and are more shock resistant than traditional HDDs.
Apple MacBook Air (2015) 13" Intel Core i7 2.2GHz / 8GB / 128GB
Apple MacBook Pro (2018) 15" Touch Bar & Touch ID / Intel Core i9 2.9GHz / 32GB RAM / 4TB SSD
Lenovo IdeaPad Z51 15.6" Intel Core i3-5010U 2.1GHz / 4GB / 500GB
50% have it

9. CPU threads

More threads result in faster performance and better multitasking.
4
Lenovo Yoga C930 13.9" FHD Intel Core i7-8550U 1.8GHz / 12GB RAM / 512GB SSD: 8
12(Intel Core i9-8950HK)
4

10. screen size

The bigger the screen size is, the better the user experience.
13.3"
MSI GT83VR Titan SLI-024 18.4" Intel Core i7-6920HQ 2.9GHz / 64GB / 1TB: 18.4"
15.4"
15.6"

11. has GPS

GPS enables global positioning, useful in map, geo-tagging or navigation apps.
Apple MacBook Air (2015) 13" Intel Core i7 2.2GHz / 8GB / 128GB
Apple MacBook Pro (2018) 15" Touch Bar & Touch ID / Intel Core i9 2.9GHz / 32GB RAM / 4TB SSD
Lenovo IdeaPad Z51 15.6" Intel Core i3-5010U 2.1GHz / 4GB / 500GB
2% have it

12. Bluetooth version

4
Lenovo ThinkPad P1 15.6" UHD Intel Xeon E-2176M 2.7GHz / 32GB RAM / 1TB SSD: 5
5
4

13. Has WiFi

The device can connect to WiFi.
Apple MacBook Air (2015) 13" Intel Core i7 2.2GHz / 8GB / 128GB
Apple MacBook Pro (2018) 15" Touch Bar & Touch ID / Intel Core i9 2.9GHz / 32GB RAM / 4TB SSD
Lenovo IdeaPad Z51 15.6" Intel Core i3-5010U 2.1GHz / 4GB / 500GB

14. every pixel has three subpixels

The device has a display with three full subpixels per pixel, resulting in a sharp and crisp picture. Pixels in some displays (like AMOLED) share one subpixel to preserve space. This can result in a less crisp, slightly blurred image.
Apple MacBook Air (2015) 13" Intel Core i7 2.2GHz / 8GB / 128GB
Apple MacBook Pro (2018) 15" Touch Bar & Touch ID / Intel Core i9 2.9GHz / 32GB RAM / 4TB SSD
Lenovo IdeaPad Z51 15.6" Intel Core i3-5010U 2.1GHz / 4GB / 500GB
11% have it

15. has a front camera

A front camera, also called secondary camera, can be used for video chats/selfies.
Apple MacBook Air (2015) 13" Intel Core i7 2.2GHz / 8GB / 128GB
Apple MacBook Pro (2018) 15" Touch Bar & Touch ID / Intel Core i9 2.9GHz / 32GB RAM / 4TB SSD
Lenovo IdeaPad Z51 15.6" Intel Core i3-5010U 2.1GHz / 4GB / 500GB

16. Has a backlit keyboard

The keyboard is backlit, making it easier to type in the dark or dim lighting.
Apple MacBook Air (2015) 13" Intel Core i7 2.2GHz / 8GB / 128GB
Apple MacBook Pro (2018) 15" Touch Bar & Touch ID / Intel Core i9 2.9GHz / 32GB RAM / 4TB SSD
Lenovo IdeaPad Z51 15.6" Intel Core i3-5010U 2.1GHz / 4GB / 500GB
58% have it

17. has an LED-backlit display

Uses LED backlighting, resulting in better image quality, more vibrant colors and richer blacks.
Apple MacBook Air (2015) 13" Intel Core i7 2.2GHz / 8GB / 128GB
Apple MacBook Pro (2018) 15" Touch Bar & Touch ID / Intel Core i9 2.9GHz / 32GB RAM / 4TB SSD
Lenovo IdeaPad Z51 15.6" Intel Core i3-5010U 2.1GHz / 4GB / 500GB
89% have it

18. maximum memory size

The maximum amount of memory (RAM) supported.
8GB
Lenovo ThinkPad P1 15.6" UHD Intel Xeon E-2176M 2.7GHz / 32GB RAM / 1TB SSD: 64GB
64GB(Intel Core i9-8950HK)
16GB

19. thickness

17.2mm
Huawei MateBook E 12" Intel Core i5-7Y54 1.2GHz / 8GB / 512GB: 6.9mm
15.5mm
24.6mm

20. total clock speed

2 x 2.2GHz
Eurocom Panther 5SE 17.3" Intel Xeon E5-2620 2GHz / 16GB / 1TB: 12 x 2GHz
6 x 2.9GHz(Intel Core i9-8950HK)
2 x 2.1GHz

21. volume

1269.32cm³
Porsche Design Book One: 1579.19cm³
1303.19cm³
2502.35cm³

22. weight

1.35kg
Toshiba Satellite C70 17.3" Intel Core i3-3120M 2.5GHz / 4GB / 750GB: 249.5g
1.83kg
2.3kg

23. Has Bluetooth

Bluetooth is a wireless technology that allows you to easily transfer data between different devices, such as smartphones, tablets and computers.
Apple MacBook Air (2015) 13" Intel Core i7 2.2GHz / 8GB / 128GB
Apple MacBook Pro (2018) 15" Touch Bar & Touch ID / Intel Core i9 2.9GHz / 32GB RAM / 4TB SSD
Lenovo IdeaPad Z51 15.6" Intel Core i3-5010U 2.1GHz / 4GB / 500GB
11% have it

24. Has a fingerprint scanner

The device has a fingerprint scanner which identifies the user.
Apple MacBook Air (2015) 13" Intel Core i7 2.2GHz / 8GB / 128GB
Apple MacBook Pro (2018) 15" Touch Bar & Touch ID / Intel Core i9 2.9GHz / 32GB RAM / 4TB SSD
Lenovo IdeaPad Z51 15.6" Intel Core i3-5010U 2.1GHz / 4GB / 500GB
16% have it

25. Has USB Type-C

The USB Type-C features reversible plug orientation and cable direction.
Apple MacBook Air (2015) 13" Intel Core i7 2.2GHz / 8GB / 128GB
Apple MacBook Pro (2018) 15" Touch Bar & Touch ID / Intel Core i9 2.9GHz / 32GB RAM / 4TB SSD
Lenovo IdeaPad Z51 15.6" Intel Core i3-5010U 2.1GHz / 4GB / 500GB
16% have it

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