BenQ TH671ST vs HT2150ST: Which One’s Better?

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BenQ is one of the most reliable projector brands. It has an extensive line of projectors catering to myriad types of buyers.

BenQ’s consumer-grade projector range starts from as low as $300 range and tops off at $5000. However, the two projectors we’re comparing today, i.e., BenQ TH671ST vs HT2150ST, sit right around the $700 price range.

With such benefaction, both projectors offer an excellent set of features and provide a value-for-money proposition. Thus, if you’re looking to get a projector at such a lucrative price point, we’ll tell you which one you should go for in this BenQ TH671ST vs HT2150ST comparison.

In this battle, we’ll compare both projectors’ initial impressions, built quality, performance, and additional features and functions that they offer.

Are you ready?

Let’s get started!

BenQ TH671ST vs HT2150ST

  • UNPARALLELED PICTURE QUALITY: With Native Full HD 1080p Resolution, 92% Rec. 709 Color Accuracy, 3000 Lumens and high native contrast ratio for the ultimate immersive cinematic and gaming experience.
  • GEARED TOWARDS GAMING: Ultra-fast low input lag and a refresh rate that matches the max output of Xbox One X & PS4 Pro ensure ultra-smooth gaming experiences without motion blur to keep you on the top of your game.
  • WOW YOUR FRIENDS: Take the action to the big screen by projecting a 100 inch screen from just 5 feet away. Projects up to 300 inches.
  • AWARD WINNING PROJECTOR: Best Projector for Gaming - High Ground Gaming 2019
  • INDUSTRY-LEADING : 3-year limited parts and labor coverage makes you rest easy that our US-based customer service team is here when you need it.
  • FLEXIBLE CONNECTIVITY: Supports most media players, gaming consoles, PCs, Macs, and mobile devices with input options such as HDMI, USB, and more
  • UNPARALLELED PICTURE QUALITY:: Native 1080p Full HD image quality with 2200 ANSI Lumens, 15, 000:1 contrast ratio, 6x RGBRGB color wheel delivers rich colors and crisp details that are calibrated for movies and gaming.
  • VIDEO GAMES ON THE BIG SCREEN: superior short throw projection enables you to project 100 inch screen from just 3 Feet letting you fully immerse into your games. Project up to 300 inches
  • LOW INPUT LAG: The specialized low input lag and unique game modes ensure gamers an ultra-smooth and comprehensive gaming experience
  • INDUSTRY LEADING WARRANTY : 3-year limited parts and labor coverage makes you rest easy that our us-based customer service team is here when you need it
  • AWARD WINNING PROJECTOR - Best Overall - Best Projectors for Gaming 2019 - IGN
  • FLEXIBLE INSTALLATION: Vertical keystone correction and a 1. 2x zoom allows easy installation
  • DLP TECHNOLOGY: DLP is the leading technology used in 90% of the world’s cinemas and 100% of digital IMAX theaters. You will experience a longer lasting, slimmer design, sharper and crisper image in BenQ projector

First Impression & Design

Benq TH671ST is the most popular projector out of the two. It’s because, the TH671ST has a smaller footprint and weighs a measly 5.9 pounds. The low weight makes it easier to carry around the projector anywhere with you.

The plastic casing helps keep its weight low and being a short-throw projector, ceiling mounting doesn’t seem necessary. With its dimensions of 11.65 (Width) x 4.6 (Height) x 9.5 (Depth) inches, keeping it on your coffee table seems like a viable option as it won’t take much space.

Benq TH671ST vs Benq HT2150ST - front
BenQ TH671ST Front Fascia

On the other hand, the BenQ TH2150ST has an aesthetically pleasing design resembling BenQ’s premium projectors like the BenQ TK850 or BenQ HT2550.

It weighs around 8 pounds and has dimensions of 15 (Width) x 4.79 (Height), 10.91 (Depth) inches. While it’s 2 pounds heavier than the BenQ TH671ST, yet it’s not very heavy compared to other projectors in this price range.

Also Read: 5 Best Projectors for Sports Bar

On the packaging front, both projectors come with necessary accessories like power cable, remote control, batteries, user manual, etc. However, the BenQ HT2150ST package additionally offers a carrying case and a backlit remote control.

Benq TH671ST vs Benq HT2150ST - Front Side
BenQ HT2150ST Front Fascia

Both projectors are supplied with built-in speakers. However, the BenQ TH671ST is equipped with a 1x 5W speaker, whereas the BenQ HT2150ST comes with 2x 10W stereo speakers.

While the built-in speakers are fine for casual listening; however, it’s better to get a dedicated speaker system to improve your audio listening experience.

Also Read: Wemax Dice Review – All-in-one Smart Projector

You can control the majority of functions with the provided remote control on both projectors. The Focus and Zoom rings are close to the projection lens on both projectors.

Additionally, the BenQ TH671ST comes with Ambient Light Sensor (ALS). Coupled with BenQ’s LumiExpert technology, the sensor adjusts gamma levels. Thus you get excellent image quality no matter what the lighting is. You also get the option to adjust or disable the LumiExpert technology.

Built Quality & Performance

Both projectors come with plastic casing yet are solidly built without any chance for excuses. Since both projectors come with DLP projection technology and a hallide lamp, a fall from waist-height can be fatal. However, both projectors can last for years and take a few beating here and there if used courteously.

Since both projectors have short-throw capabilities, they are apt for use in your dorm room and can be placed on a coffee table or a stool. Additionally, both projectors can be ceiling mounted. It will require a lot less wire-size since it will be very close to the projection surface.

Also Read: How to Run Power to a Ceiling Mounted Projector

To get a 100-inch screen from BenQ TH671ST, you’ll need to place it at an approximate distance of 5-feet with max optical zoom.

On the other hand, the BenQ HT2150ST offers similar projection size from a longer distance of 8 feet. Hence, if you’re planning to build a golf simulator at home, the BenQ TH671ST is an excellent pick.

While both projectors come with keystone correcting option, they miss out on lens shift technology. Though, it isn’t a deal-breaker because lens shift technology is usually available in several expensive projectors.

Benq TH671ST - Connectivity Options
Benq TH671ST Connectivity Options

Both projectors are blessed with plenty of connectivity choices. You get connectivity options like 2x HDMI (MHL support), 1x D-Sub port, 1x Audio In, 1x Audio Out, 1x USB Type-A, 1x USB Mini-B, and 1x RS232 port.

Thus, you can connect numerous devices to both projectors like TV, Computer, Xbox, PlayStation, and Wii, along with your favorite streaming media player.

Also Read: How to Watch TV on Projector without Cable Box

Benq HT2150ST - Connectivity Options
BenQ HT2150ST Connectivity Options

While we already know that BenQ TH671ST and HT2150ST are short-throw projectors. However, both are also marketed as gaming projectors because they offer a low input lag of 16ms, which is ideal for playing fast-paced games.

In reality, the BenQ TH671ST is highly geared towards gaming and general use. On the other hand, the BenQ HT2150ST is ideal for a home theater setup at low cost. It has higher contrast ratio, 6x RGBRGB color wheel and 96% Rec.709 color space coverage for accurate color reproduction.

Also Read: BenQ HT2050A Review

Both projectors are coupled with a native resolution of 1920 x 1080p. Thus, you can enjoy your favorite games with your preferred gaming consoles with Full HD resolution on a big screen.

In this BenQ TH671ST vs HT2150ST comparison, the significant difference is that the BenQ TH671ST comes with 3000 lumens brightness. In contrast, the BenQ HT2150ST offers 2200 lumens of max brightness.

With this much difference in brightness, the TH671ST is targeted more towards and all-around use in an office, classroom, gaming room, living room, etc. Simultaneously, the BenQ HT2150ST is geared further towards accurate color reproduction, which is useful when watching movies in high resolution.

As mentioned above, the BenQ HT2150ST offers precise color reproduction because it covers 96% of Rec.709 color space. Thus you get vibrant and life-like colors while watching your favorite video content on this projector.

Both projectors come with 3 lamp modes and a 240W lamp rated to last up to 7000 hours if used in SmartEco mode. However, the BenQ TH671ST is equipped with a 4th mode called as LampSave mode. The LampSave mode extends the lamp’s life up to 15,000 hours, albeit with lower brightness.

On the other hand, the BenQ HT2150ST consumes max power of 375W, whereas the BenQ TH671ST consumes slightly less at 325W. However, the average power consumption will be a lot less than this.

Important Features & Functions

In this BenQ TH671ST vs HT2150ST comparison, we’ve seen that both projectors offer a similar set of features yet targeting a different set of audience.

Thus, to please their preferred audience, both projectors come bundled with certain essential features and functions making them stand one over another.

As mentioned above, the BenQ TH671ST features the LumiExpert technology that automatically adjusts gamma values depending on the ambient light. This change is enabled by using an Ambient Light Sensor (ALS) placed at the projector’s front.

Benq TH671ST - Top Panel Control
Benq TH671ST Top Panel Control

To outcompete this, the BenQ HT2150ST is equipped with ISF certified calibration for Day and Night time viewing. This calibration is done by ISF experts and can only be changed/modified by ISF personnel.

You can select the ISF Day or ISF Night mode by going into the OSD menu. Thus, during the day, you can select the ISF Day mode, while the ISF Night mode is meant for night time viewing.

Having said that, both projectors are also equipped with Dual OSD menus – Basic & Advanced. Thus, if you prefer full control over minute settings on your projector, you can access the advanced OSD menu.

At the same time, your family members can stick with the Basic OSD menu and take charge of the crucial features like brightness, contrast, lamp mode, etc.

Suppose you want to connect your cable TV with your projector. The BenQ HT2150ST will be a better option because it supports SDTV, EDTV, and HDTV with a true 1:1 image reproduction.

Benq HT2150ST - Top Panel Controls

Since both projectors are marketed as gaming projectors with low input lag, you also get Game mode on both projectors to improve the overall gaming experience. The Game Mode fine-tunes the projector’s image quality by improving shadowy scenes. It overall offers a higher clarity and precision even while playing fast-paced games.

However, with its higher brightness, the BenQ TH671ST is the better option if you plan on watching sports in a well-lit room. The 3000 lumens brightness is ideal enough to offer a big and bright screen to enjoy your favorite sports. I recommend getting a dedicated speaker set if you want to enhance both the viewing and auditory experience.

Also Read: 5 Best Projectors with Highest Brightness Output

On the other hand, the BenQ HT2150ST offers a higher dynamic contrast ratio of 15,000:1 enabling richer grayscale that improves clarity even in darker scenes. Thus, you’ll get deeper blacks coupled with vibrant colors due to the higher contrast ratio.

To prevent the projector from overheating, both products are equipped with variable-speed exhaust fans. Since projectors with DLP lamps tend to heat faster, the exhaust fan’s RPM is set higher for faster heat dissipation.

This can result in a noisy fan within a quiet room. The exhaust fan on both projectors is audible in a quiet room. However, once you turn on the volume, the fan noise isn’t noticeable.

BenQ TH671ST vs HT2150ST: Pros & Cons

Pros & Cons of BenQ TH671ST


  • Short throw projection capabilities
  • Higher brightness at 3000 lumens
  • Compact size and weighs a measly 5.9 pounds
  • LumiExpert technology automatically adjusts in ambient lighting
  • LampSave mode extends lamp life up to 15,000 hours
  • Low power consumption compared to BenQ HT2150ST


  • Colors not as vibrant when compared to BenQ HT2150ST
  • Fairly average looks
  • The built-in speaker sounds tinny and lacks clarity

Pros & Cons of BenQ HT2150ST


  • Produces 100-inch image from a distance of 8-feet
  • Offers excellent color accuracy and covers 96% of Rec.709 color space
  • Attractive design that matches it premium counterparts
  • Offers stereo speaker set that produces 10W sound output
  • Ideal for using in a budget home theater environment
  • Excellent connectivity options


  • Weighs close to 8 pounds
  • Big in size when compared to Benq TH671ST
  • Misses out on LampSavemoder that offers up to 15,000 hours lamp life in BenQ TH671ST


As you’ve seen above BenQ TH671ST vs HT2150ST comparison, both projectors stand neck-to-neck with each other, and choosing the best between the two can be a hard choice.

Thus, it’s better to go with the one that matches your requirements as both projectors are respectable contenders.

You should go for BenQ TH671ST if you need an all-rounder projector to use comfortably in the daytime due to its higher brightness.

On the other hand, if you want to set up a budget home theater room, the BenQ HT2150ST is meant for this purpose specifically. It offers higher color accuracy than TH671ST and will be a joy to watch your favorite TV shows and movies.

Since both projectors offer short-throw capabilities, they can be used in a small room like a bedroom or dorm room. In comparison, you can enjoy your favorite games, too, as both projectors offer low input lag.

Thus to conclude this Benq TH671ST vs HT2150ST comparison, we’ll say you won’t be wrong if you go ahead with any projectors depending on your usage.

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