Epson EB-421i
Epson EB-421i
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Overall Score

Epson EB-421i

A 2 year old 3000:1 1024 x 768 data projector with average features
3000:1 XGA (1024x768) No 35dB Jan 2015
Contrast Ratio (typical) Projector Native Resolution 3D Noise Level Release Date

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Epson EB-421i Review

With low running costs and at over 2 years old, we have scored the Epson EB-421i as follows for Summary.
Average Features
2 Years Old
£97 Over 1 Year
Overall Score

Why Has it Scored 41?

Sony projectors have excellent reviews in general.
It is over 2 years old and it is likely that newer, better projectors are available. View the latest projectors 2017.
This projector has running costs of £97 over 1 year, which puts it typical compared to the other 1,763 projectors that we have compared it to.
It has some good features, but is also missing a few features:
Has a built-in speaker
Supports Wi-Fi
Quite dim projector brightness
Does not support full HD

Epson EB-421i In-Depth Analysis


Epson Has Very Good Multimedia Projector Reviews

We checked 1,088 expert and user reviews (including 161 verified purchases) for Epson data projectors and found that on average Epson has very good ratings. 97% of those that bought a Epson data projector would recommend the product that they bought to other buyers.


1024 X 768 Resolution

The Epson EB-421i has a 1024 x 768 projector native resolution which is higher than most projectors. Most projectors have a WXGA (1280x800) resolution. This Epson projector also has a projector native resolution of XGA (1024x768).

What does "projector native resolution" mean? Less Edit

Has a Built-In Speaker

The EB-421i has a built-in speaker, as do 76% of projectors.

What is a built-in speaker? Less Edit

Quite Dim Projector Brightness

The EB-421i's projector brightness of only 2,500 ANSI lumens is fairly dim compared to most other projectors. It is in the dimmest 19% of all projectors when ordered by this feature. The projector brightnesses of projectors range from 12 ANSI lumens to 85,000 ANSI lumens, and the average projector brightness is 3,700 ANSI lumens.

What does "projector brightness" mean? Less Edit

Supports Wi-Fi

The Epson EB-421i supports Wi-Fi. 90% of projectors do not support Wi-Fi.

What is Wi-Fi? Less Chart Hide Chart Edit

Does Not Support Full HD

The EB-421i does not support full HD. 64% of projectors also do not support full HD.

What is full HD? Less Chart Hide Chart Edit

Has an Air Filter

The EB-421i has an air filter. 95% of projectors do not have an air filter.

What is an air filter? Less Chart Hide Chart Edit

Average Noise Level

The EB-421i's noise level of 35dB is relatively average compared to most other projectors. It is in the loudest 60% of all projectors when ranked by this feature.

What does "noise level" mean? Less Edit


Released Over Two Years Ago

Epson released the EB-421i in January 2015.

Running Costs

Running Costs Are OK

The EB-421i is typical compared to the other 1,763 data projectors that we have analysed for 1 year running costs. Based on average usage levels and energy prices, we estimate the 1 year running cost of the EB-421i is £97.

Calculate your own running costs

Product Identifiers

Manufacturer Part Numbers:




3 ANSI lumens brighter projector brightness
21% quieter noise level
Bigger bulb power
Older by over two years
Brighter projector brightness
Bigger bulb power
Slightly quieter noise level
Shorter service life of lamp
2 ANSI lumens brighter projector brightness
100W bigger bulb power
Significantly shorter service life of lamp
A lot brighter projector brightness
Slightly bigger bulb power
5% cheaper to run
Older by over two years