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alaTest has collected and analyzed 8 reviews of NEC P451W. The average rating for this product is 4.4/5, compared to an average rating of 4.2/5 for other products in the same category for all reviews. Reviewers are impressed by the image quality and size. The design and price also get good feedback, whereas there are some critical opinions about the noise.

usability, price, design, size, image quality


We analyzed user and expert ratings, product age and more factors. Compared to other products in the same category the NEC P451W is awarded an overall alaScore™ of 87/100 = Very good quality.

Review analysis

(Based on 8 reviews)

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Consumer review ( review summary for NEC P451W


alaTest has collected and analyzed 1 user review of NEC P451W from The average user rating for this product is 5.0/5, compared to an average user rating of 4.2/5 for other products in the same category on

100% of the reviews on give this product a positive rating.

This summary is based on the products: NEC NP-P451W 4500-Lumen Widescreen Entry-Level Professional Installation ProjectorNEC NP-P451W 4500-Lumen Widescreen Entry-Level Professional Installation Projector

Aug, 2018

Expert review by : Ng Chong Seng (

NEC P451W Review - A High-performing, Entry-level Installation Projector


The NEC P451W is an entry-level installation projector with a high 4,500 ANSI lumens brightness, and a long 6,000-hour lamp life (under Eco mode). It also comes with plenty of connectivity options, including two HDMI ports, and a slew of software...

Very high brightness (4,500 ANSI lumens) ; Plenty of I/Os (including 2 HDMI ports) ; Excellent data image quality ; Vertical lens shift function ; Reasonably priced

Most software tools not supported on the Mac ; Slight color shift ; Doesn't support 3D

In more ways than one, this new P series of projectors is the brighter version of NEC’s current M series of portable business projectors, which currently tops out at 4,200 ANSI lumens in the

Oct, 2013

Product Specifications


Certification:CE; ErP; TÜV GS / UL60950-1, CSA60950-1, FCC 15 B, ICES-03 B, NOM-001-SCFI-1993
RoHS compliance: Yes


Cable lock slot: Yes
Cable lock slot type:Kensington
Ceiling mountable: Yes
Color of product:White
Form Factor:Desktop
Product type:Desktop projector


Built-in display: No

Energy Management

AC adapter frequency:50/60
AC adapter input voltage:100 - 240
AC input frequency:50 - 60
AC input voltage:100 - 240
Power consumption (max):357
Power consumption (PowerSave):0.2
Power consumption (standby):10
Power consumption (typical):292 / 357
Power Source:AC


Bulb power:270
Lamp power (economic mode):160
Lamps quantity:1
Service life of lamp:3500
Service life of lamp (economic mode):6000

Lens System

Aperture range (F-F):1.7 - 2.1
Focal length range (f-f):0.685 - 1.14
Throw ratio:1.3 - 2.2 / 1.38 - 2.24:1


Built-in speaker(s):Y
Built-in speakers: Yes
Number of built-in speakers:1
RMS rated power:16
TV tuner integrated: No


Ethernet LAN:Y
Ethernet LAN connection: Yes
Wi-Fi:No / Yes

Operational Conditions

Operating relative humidity (H-H):20 - 80
Operating relative humidity range:20 - 80
Operating temperature (T-T):5 - 40
Operating temperature range (T-T):5 - 40
Storage temperature (T-T):-10 - 50
Storage temperature range (T-T):-10 - 50

Packaging Content

Batteries included: Yes
Cables included:AC, VGA
Handheld remote control: Yes
Manual: Yes
Quick start guide: Yes
Remote Control Type:IR


Air filter: Yes
Display scan frequency (horizontal):15 - 100
Horizontal scan range:15 - 100
Mac operating systems supported: Yes
Noise Level:37
Noise level (economic mode):30
On Screen Display (OSD): Yes
Password protection:Y
Vertical scan range:50 - 120
Windows operating systems supported: Yes

Ports & interfaces

AC (power) in: Yes
Audio (L,R) in:1
Composite video in:1
DVI port: No
Ethernet LAN (RJ-45) ports:1
Ethernet LAN (RJ-45) ports quantity:1
HDMI connector type:Full-size
HDMI ports quantity:1 / 2
Headphone outputs:1
Microphone in: Yes
PC Audio in: Yes
PC Audio out: Yes
RS-232 port:1
RS-232 ports:1
S-Video in:1
S-Video inputs quantity:1
Serial interface type:RS-232
USB 2.0 ports quantity:1 / 3
USB connector type:USB Type-A
VGA (D-Sub) ports quantity:2


AC input frequency:50 - 60
AC input voltage:100 - 240
Power consumption (max):357
Power consumption (PowerSave):0.2
Power consumption (standby):10
Power consumption (typical):292 / 357
Power Source:AC


Contrast ratio (typical):4000:1
Keystone correction, horizontal:-30 - 30
Keystone correction, vertical:-30 - 30
Matrix size:0.59
Maximum analog resolution:1600 x 1200 / 1920 x 1200
Maximum digital resolution:1920 x 1080
Native Aspect Ratio:16:10
Objective projection distance:27.2 - 574.8
Projection distance:27.2 - 574.8
Projection technology:3LCD / LCD
Projector brightness:4000 / 4500
Projector native resolution:WXGA (1280x800)
Screen size compatibility:25 - 300
Supported aspect ratios:16:10, 16:9 / 4:3, 16:9, 16:10
Zoom capability:Manual / Yes
Zoom ratio:1.7:1


Card reader integrated: No


3D compatibility: No
Analog signal format system:NTSC, NTSC 4.43, PAL, PAL 60, PAL M, PAL N, SECAM
Full HD: No
Supported graphics resolutions:1280 x 1024 (SXGA), 1280 x 800 (WXGA), 1400 x 1050 (SXGA+), 1600 x 1200 (UXGA), 640 x 480 (VGA), 800 x 600 (SVGA)
Supported video modes:1080i, 1080p, 480i, 480p, 576i, 720p

Weight & Dimensions

Depth:11.1 / 4.53
Height:11.1 / 4.53