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21in/19.9V 21mm 2048x1536 71HZ CM828U-511

21in/19.9V 21mm 2048x1536 71HZ CM828U-511
alaScore 83

2 reviews

Apr, 2018

alaTest has collected and analyzed 2 reviews of 21in/19.9V 21mm 2048x1536 71HZ CM828U-511. The average rating for this product is 4.2/5, compared to an average rating of 4.3/5 for other Monitors for all reviews.

We analyzed user and expert ratings, product age and more factors. Compared to other Monitors the 21in/19.9V 21mm 2048x1536 71HZ CM828U-511 is awarded an overall alaScore™ of 83/100 = Very good quality.

Review analysis

(Based on 2 reviews)

Expert Reviews  


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Showing 1 - 2 of 2 Show Reviews: in English

Expert review by : Alfred Poor (

Big Screen, Small Real Estate

Mar, 2002

Expert review by (

Hitachi CM828 21 inch CRT Monitor Review


The CM828 is higher-end display that sports an even nicer display tube than the very economical CM810.

Other than that one small point it's difficult to find any significant deficiencies with the Hitachi CM828 display - except that perhaps the brightness distribution could be improved upon for perfect uniformity. The CM828 truly represents the top of...

Aug, 2001

Product Specifications

Part of the amazing 3S Series of Super Space Saving monitors, Hitachi's CM828 features a short depth tube to save space while typically using 10% less power than the average 21" monitor. With sharp images and text this monitor provides dual input so users can switch between two computers without re-booting. Featuring high resolution at solid flicker-free refresh rate and Hitachi's Precision Focus technology for precise focus at the edges and corners, this monitor is designed for demanding CAD/CAM, graphics and imaging professionals.

Audio Output

Type: None

Dimensions & Weight


Display (Projector)

Color Support:24-bit (16.7 million colors)
Color Support:24-bit (16.7 million colors)
Diagonal Size:21in
Diagonal Size (metric):53.3cm
Dot Pitch / Pixel Pitch:0.21mm
Form Factor:Desktop
Interface:VGA (HD-15)
Max Resolution:2048 x 1536


Packaged Quantity:1
Product Line:Hitachi

Input Device

Type: None


Compliant Standards:cUL / DHHS / EN 60950 / EN 61000-3-2 / EN55022 / EPA Energy Star / FCC Class B certified / ISO 9241 / NEMKO / Plug and Play / TCO '99 / TUV / UL 1950 / VESA DPMS / ZH1 618 / TCO 99

Service & Support

Type:3 years warranty

Video Input

Digital Video Standard: None
TV Tuner Presence: No