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20 Reasons For
User Reviews Are Good
On average, based on 100 user reviews the average user rating of this multimedia projector is 87%.
Good Picture Quality
A few Optoma S321 reviewers who bought this projector considered that it had good colour saturation. Amazon Customer wrote in their review of this projector four years ago “For price I think it is great and colours to my eye look bright” and scored the product 5 stars. Five years ago James Ingram said “However, I was suprised just how bright and vivid the colours were”. Jj said in their review of the Optoma S321 “Absolutely in love in that! Bright colours, very nice picture, easy” .
Five Optoma S321 reviewers wrote in their reviews that this projector had good picture quality. Three years ago K. Smith wrote “Was easy to set up and the picture quality is better than I expected, at this price I decided to order a spare” and scored it very highly. Mayank wrote “I am amazed to see the clear picture quality and performance for the price tag attached to it” in their review of the Optoma S321.
One person reckoned that the Optoma S321 had a sharp image. One Optoma S321 reviewer who reviewed the Optoma S321 thought it was good for watching movies. Four years ago Lovesphotography said on Amazon “We also use it at home to watch movies, great quality also for movies”.
Some Optoma S321 reviewers who reviewed this projector concluded that it was compact. Four years ago A. V. Whitmore wrote “Having played with it I wish I'd bought a more compact, higher resolution projector even though the cost is higher” in their review but even so they only gave the Optoma S321 a rating of 60 out of 100. Bibi said on Amazon “It is compact and small 2”. Mr. Chris Jones said four years ago “Its a nice light compact machine plenty of light for a semi illuminated room” in his Optoma S321 review.
A few Optoma S321 owners concluded that it was a good depth. Dp mentioned on Amazon “At 3.5 inches depth it fits easily into my laptop bag for travel” in their Optoma S321 review and scored the product 5 stars. Leo mentioned “The luminosity is fine and color hue and depth is acceptable” however despite that he gave the product a rating of 60 out of 100.
A number of Optoma S321 owners who reviewed it said that it was a good height. Three years ago Bibi wrote “There is a height adjuster at the front (one reviewer said there wasn't) - you just turn the little third leg 4” in her review of this projector. Mr. R. V. Malin wrote in their review four years ago “I was tempted to deduct a star for the lack of 1] a Lens cover, 2] a Quick release height adjustment foot (as on previous models” and gave the product a rating of 5 stars.
One customer concluded that it was heavy and bulky. Victoria Jayne scored this projector very highly and she said five years ago “It isn't too heavy and, as it is well packed in a kind of bubble wrap when it arrives, I carry it around in it's box”.
One person who reviewed it concluded that it was a good weight. Magneto wrote in their review of the Optoma S321 on Amazon “*Light weight *Good picture quality (not the best”. One person said in their reviews that the Optoma S321 was easy to carry around. Pam Wright rated the product as very good and she mentioned on Amazon “It is easy to set up, easy to carry (although a carry-case is recommended”.
Acceptable Noise Level
Some Optoma S321 owners reckoned that it was quiet. Amazon Customer said four years ago “The fan is also quiet” and rated it as excellent. Chris. K mentioned on Amazon “The fan is very quiet and the display is bright enough” in their review. John Whittle. wrote in his review of the Optoma S321 “The sound from the unit is so quiet that without any amplified speakers”.
A few people wrote in their reviews that it was noisy. Dp gave this projector a very good rating and mentioned “Great colours, very clear images, not noisy”. Mcbun said on Amazon three years ago “Is not particularly noisy” and gave the product a very good rating. This year Michael A. said “This projector is real nice, displays clear picture, movies and presentation, low noise, I love it” in his review of the Optoma S321.
Good Product Quality
A few Optoma S321 reviewers mentioned in their reviews that the product was good quality. Buyer wrote in their review of the Optoma S321 on Amazon “I use it as part of my job role to display presentation, videos and pictures etc Even in a light room the picture quality is really good” and gave it a very good rating. Checkatrade scored the Optoma S321 very highly and wrote in their review of the Optoma S321 on Amazon “Plugging it in, we could see straight away that it is a really good projector with excellent image quality”. D said “I was impressed with the overall quality and simplicity of use” in their review of this projector and rated it 5 stars.
Easy to Use
Eighteen Optoma S321 owners who reviewed it thought it was easy to setup. Amazon Customer said in their Optoma S321 review on Amazon “Was quite easy for my husband to set up” and gave this projector a score of 5 stars. Anne wrote in her review of the Optoma S321 on Amazon “VERY easy to set up and use with my laptop”. Harold Magee said three years ago “Working well, easy to set up and good value for money”.
Thirteen Optoma S321 owners who reviewed it mentioned that it was easy to use. Aldeia Da Pequenada said in their review of the Optoma S321 on Amazon “Easy to use, easy to work” and gave the product a rating of 80 out of 100. Bob the Builder gave it a very good review score and he mentioned on Amazon “Easy to set up, easy to use, great definition” in his review of the Optoma S321. Three years ago Cottage wrote on Amazon “Very easy to use, with no hard set up processes” and gave it a score of 5 stars.
Three Optoma S321 reviewers reckoned that the Optoma S321 was easy to use the menus. R. J. Howgego mentioned in their review of this projector on Amazon “The projector provides countless on-screen menus for making fine adjustments to the image.”.
One Optoma S321 owner thought the product had a good experience. T a mentioned “The amazing sharpness and vibrant colours add to the experience, any movie looks fantastic when seen on my projector” and scored the Optoma S321 very highly.
+15 More reasons for
A number of Optoma S321 reviewers who bought the Optoma S321 reckoned that it was good value for money. Three years ago A. Neal said on Amazon “Excellent value” in their review. A. Neal also wrote “It is very sensibly priced”. Adam wrote on Amazon two years ago “As a bonus, you can also save money on heating in winter as this can keep any room warm up to the size of say a nice indoor tennis court” but he only scored it 40 out of 100.
A few customers who purchased the Optoma S321 reckoned that it was a bargain for the price. Four years ago Dan H mentioned on Amazon “Presentations with outstanding performance, if your looking for a cheap home cinema projector or need something for presentations go for this one” and rated the product 5 stars. Dawn Bevington gave it a rating of 5 stars and she mentioned on Amazon three years ago “Recommended o purchase if looking for a cheap” in her review of this projector. Kgtech said “Absolute Bargain though!” in their review of the Optoma S321 but even so they gave this projector a rating of 3 stars.
One Optoma S321 reviewer wrote in their reviews that the product was cheap. Chris. K mentioned in their review on Amazon “Looking at previous reviews for projectors, I chose this for the reported low noise, bright display and budget cost”.
Optoma Has Good Reviews for Its Projectors
Optoma projectors have good reviews on average and across all multimedia projectors Optoma is one of the better rated brands.
Several Optoma S321 owners who reviewed it considered that it was strong and durable. Mayank mentioned on Amazon “Its sleek and sturdy, smaller in size than I anticipated”. Stina Ilves mentioned “Surely durable and with a long lifespan” in their Optoma S321 review.
Good Sound Quality
A few people wrote in their reviews that it had good sound quality. Andrea C said in his review of the Optoma S321 on Amazon four years ago “Arrived in less than a week to spain too FREE delivery sounds great and looks great”. Peter Mallard said in his Optoma S321 review “You don't need it if you are watching movies as you will want to use a seperate sound system anyway to compliment the big picture” and gave it a score of 5 stars. Victoria Jayne said “The sound works well through my laptop” in her review.
Good High Def TV
Several Optoma S321 owners said in their reviews that this projector was good at displaying high definition TV. Five years ago James Ingram said on Amazon “Sure it's not HD” in his review of this projector. Magneto said in their review of the Optoma S321 on Amazon “*If you try and watch good quality (HD) films it reduces in its picture quality”. Onepaintedman said in their review of this projector on Amazon “Works well with HD streaming and produces a wonderfully clear bright picture on a neural coloured wall! Can't recommend highly enough” and scored the Optoma S321 very highly.
Two customers who purchased it considered that it was good looking. John Whittle. gave this projector a very good rating and he said in his review of the Optoma S321 “The projector gave us a beautiful clear presentation from a DVD in the laptop with no distortions whatsoever in daylight, even with the curtains open”. Mr. R. V. Malin mentioned in their review of this projector “There is a proper 3 pin 'kettle' style UK lead! All in all a very good projector for the price” and gave it an excellent review score.
One person wrote in their reviews that it had good technical guidance. Stretching Minds wrote on Amazon “A very helpful getting started guide too”.
Good Remote Control
One person said in their reviews that it had a good remote control. Three years ago Guillermo mentioned in his review “All the control buttons are on the remote”.
Supports Full HD Projection
The Optoma S321 supports Full HD projection. Most of the other projectors that came out around the same time as the S321 do not support Full HD projection.
Alternative multimedia projectors which also support Full HD projection that you might also want to look at include the Optoma S341[plb_3762889_price].
Supports 3D Image Projection
The Optoma S321 supports 3D image projection. Most of the other projectors that are a comparable age to the S321 also support 3D image projection.
It is worth considering alternative projectors which also support 3D image projection including the S331[pl_3718068_price], the S341[pl_3762889_price], or the S340[pl_3846697_price] all from Optoma.
Fairly Long Service Life of Lamp in Economic Mode
The Optoma S321 has a quite long service life of lamp in economic mode (10,000 hours) compared to most of the other new projectors. Latest projectors have service life of lamp in economic mode of between 2,000h and 30,000h, and the average service life of lamp in economic mode is 8,400h.
With a width of only 298 millimeters, the Optoma S321 is one of the narrower multimedia projectors that have been available for the last year amongst projectors of this age. Across all the newly released projectors the widths range from 110mm to 590mm.
At only 2.2 kilograms, the Optoma S321 is quite light compared to most of the other recently released comparable spec projectors. The average weight of recently released projectors is 6.3kg, and the weights range from 2.7g to 28kg.
Quite Low Power Consumption in Economy Mode
The average power consumption in economy mode of projectors that are a similar age to the S321 is 250W, and the power consumption in economy mode range from 0.5W to 850W. At only 187 Watts, the Optoma S321 has a quite low power consumption in economy mode compared to most of the other projectors that have been on the market for around the same time as the S321.
6 Reasons Against
One Optoma S321 reviewer who bought this projector considered that it was not good in terms of connectivity. Cegs0 gave it a rating of 3 stars and said on Amazon “Mac Book Pro Connectivity Problem”.
Does Not Have a Built-In Speaker
The Optoma S321 does not have a built-in speaker, unlike most of the other projectors that came out in the last 12 months which have a built-in speaker.
We think you might also be interested in other projectors which also have a built-in speaker including the S331[pl_3718068_price], the S341[pl_3762889_price], or the S340[pl_3846697_price] all from Optoma.
Does Not Support WiFi Connectivity
Like most of the other projectors that are a comparable age to the S321, the Optoma S321 does not support WiFi connectivity.
Only SVGA (800x600) Native Projector Resolution
The highest resolution of the Optoma S321 is SVGA (800x600). That's 77% less resolution than the most frequently found native projector resolution of 1080p (1920x1080).
This data projector's resolution (SVGA (800x600)) is in fact the worst resolution amongst all similar spec multimedia projectors that were released in the last 12 months.
A WUXGA (1920x1200) native projector resolution is the best resolution across similar types of data projector.
+3 More reasons against
Very Small Lamp Power
The Optoma S321 has a fairly small lamp power (only 195 Watts) compared to most of the other recently released projectors. The smallest lamp power of new projectors is 190W and the biggest is 470W.
Very Small Matrix Size
With a matrix size of only 0.55 inches, the Optoma S321 has one of the smaller matrix sizes amongst similar spec data projectors of this age. The smallest matrix size of latest projectors is 0.55", the biggest is 0.76", and the average matrix size is 0.67".
3 Other reasons to consider the Optoma S321
Average Running Costs
Based on typical usage levels and energy prices we estimate that the S321 will cost £76 over 1 year to run, which is typical compared to the other 64 multimedia projectors that have been available for the last year.
Released Nine Months Ago
It was nine months ago when this data projector was released.
Average Projector Brightness
At 3,200 ANSI lumens, the Optoma S321 has a relatively typical projector brightness compared to most of the other comparable spec projectors that have been on the market for the last year.
If you want a projector with a brighter projector brightness then you might also want to look at the S340[pl_3846697_price] (3,300 ANSI lumens), or the S341[pl_3762889_price] (3,500 ANSI lumens) both from Optoma.
+1 Other reason
Native Projector Resolution
3,200 ANSI lumens
Vertical Keystone Correction
-40 - 40
1.2 - 12
Supported Aspect Ratio
Compatible Screen Size
27.78 - 304.4
Native Aspect Ratio
Supported Number of Colours Display
1.073 billion colours
Service Life of Lamp in Economic Mode
Lamp Service Life
1.94 - 2.16:1
2.4 - 2.53
Focal Length Range
21.85 - 24.01
3D Image Projection
Full HD Projection
Analog Signal Format System
NTSC, NTSC, NTSC 3.58, NTSC, NTSC 4.43, NTSC, NTSC J, NTSC, NTSC M, PAL, PAL, PAL B, PAL, PAL D, PAL, PAL G, PAL, PAL H, PAL, PAL I, PAL, PAL M, PAL, PAL N, SECAM, SECAM, SECAM B, SECAM, SECAM D, SECAM, SECAM G, SECAM, SECAM K, SECAM, SECAM K, SECAM K1, SECAM, SECAM L
Ports & Interfaces
Component Video in Port
Composite Video in Port
USB 2.0 Port
VGA (D-Sub) Port
AC Power in
Noise Level in Economy Mode
Horizontal Scan Range
15.3 - 91.1
Vertical Scan Range
24 - 85
On Screen Display Language
ARA, CHI (SIMPL), CHI (TR), CZE, DAN, DEU, DUT, ENG, ESP, FIN, FRE, GRE, HUN, INC, ITA, JPN, KOR, NOR, POL, POR, RUS, SWE, THA, TUR, VIE
This projector is real nice, displays clear picture, movies and presentation, low noise, I love it. It's good that they put two power cables, one UK 3-pin plus and the roundish 2-pin plug we use... Read more…
Easy to set up on a laptop, clear display even in daylight, not had much luck with the remote but using the laptop controls for presentations is fine. Light and nice bag to carry it in. Used it... Read more…
Have had this about 2years now perfect,, cheap and I remember ordering this item on a thurs n it came on fri morning wow great,, I had a projector b4 not the best seen this one for 200 as the... Read more…
Getting a nice big picture is very easy with this. What I find best is to move any training I am doing away from meeting rooms and do it in a nice long corridor. That way you can get the projector... Read more…
Bought for small group (up to 30) for Power Point presentations/talks yet was brilliant for 90+ audience - picture as big as you could want - fitted a large screen happily. VERY easy to set up and... Read more…
Not as good a s older models , came with a eurpoean plug and not an English one . I also was notified that it was subject to a parts recall , I thought that would be easy but to get the part I... Read more…
Have one of these myself for watching DVDs at home, which has done a good job for a couple of years, so I have since bought two more on behalf of a voluntary organisation I am involved with. Good... Read more…
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Total running cost over 5 years
Running costs for this projector have been estimated based on other similar projectors. If you know how much electricity and water the Optoma S321uses then please let us know by entering those figures in the boxes above.
Running this projector over 5 years will generate 0.38 tonnes of carbon dioxide (CO2).
To offset that much CO2 you would need to plant 10 tree seedlings and grow them for 10 years.
Previous and future annual running costs of the Optoma S321 assuming future electricity price inflation of 0.0600% per year. Edit inflation assumptions