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Costco Members: 40" MSI MAG401QR 3440x1440 155Hz 1ms IPS Gaming Monitor
$270
$340
20% off
+ Free Shippingat Costco Wholesale
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+ Free Shippingat Costco WholesaleDeal Details
Costco Wholesale has for its Members: 40" MSI MAG401QR 3440x1440 155Hz 1ms IPS Gaming Monitor on sale for $339.99 - $70 off manufacturer's savings = $269.99. Shipping is free.
Specs:
- Note: Non-Members may purchase but are subject to a 5% surcharge.
Specs:
- Resolution: 3440x1440 UWQHD
- Refresh Rate: 155Hz
- Response Time: 1ms (MPRT)
- Panel Type: IPS
- Brightness: 400nits
- VESA DisplayHDR 400, Adaptive Sync compatible
- VESA Mount: 100x100mm
- Ports:
- 2x HDMI 2.0b
- 1x DisplayPort 1.4a
- 1x USB Type-C (DP alt w/ 65W PD)
- 2x USB 2.0 Type-A
- 1x USB 2.0 Type B Upstream
- 1x 3.5mm Audio Out
Editor's Notes
Written by jimmytx | Staff- About this Store:
- Details of Costco's return policy here.
- If you don't have a Costco Warehouse Membership, you can sign-up here.
- If not a Costco member yet, you may take advantage of our front page deal to get a $20-$40 digital shop card on joining Costco.
- Additional Information:
- $70 manufacturer's savings is valid 01/19/26 through 02/08/26. While supplies last. Limit 5 per member.
- This offer is $30 less (10% savings) than our popular front page deal price of $299.99 from August 2025 which earned 35 thumbs up.
- Rated 3.5 out of 5 stars at Costco Wholesale based on over10 customer reviews.
- Please see the original post for additional details and/or view the Wiki and forum comments for further helpful discussion if available.
Community Notes
About the Poster
Deal Details
Community Notes
About the Poster
Costco Wholesale has for its Members: 40" MSI MAG401QR 3440x1440 155Hz 1ms IPS Gaming Monitor on sale for $339.99 - $70 off manufacturer's savings = $269.99. Shipping is free.
Specs:
- Note: Non-Members may purchase but are subject to a 5% surcharge.
Specs:
- Resolution: 3440x1440 UWQHD
- Refresh Rate: 155Hz
- Response Time: 1ms (MPRT)
- Panel Type: IPS
- Brightness: 400nits
- VESA DisplayHDR 400, Adaptive Sync compatible
- VESA Mount: 100x100mm
- Ports:
- 2x HDMI 2.0b
- 1x DisplayPort 1.4a
- 1x USB Type-C (DP alt w/ 65W PD)
- 2x USB 2.0 Type-A
- 1x USB 2.0 Type B Upstream
- 1x 3.5mm Audio Out
Editor's Notes
Written by jimmytx | Staff- About this Store:
- Details of Costco's return policy here.
- If you don't have a Costco Warehouse Membership, you can sign-up here.
- If not a Costco member yet, you may take advantage of our front page deal to get a $20-$40 digital shop card on joining Costco.
- Additional Information:
- $70 manufacturer's savings is valid 01/19/26 through 02/08/26. While supplies last. Limit 5 per member.
- This offer is $30 less (10% savings) than our popular front page deal price of $299.99 from August 2025 which earned 35 thumbs up.
- Rated 3.5 out of 5 stars at Costco Wholesale based on over10 customer reviews.
- Please see the original post for additional details and/or view the Wiki and forum comments for further helpful discussion if available.
Community Voting
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Top Comments
Many of you have probably heard that a 32" 1440p monitor has the exact same pixel density as a 24" monitor at 1080p. They are basically the same.
Do the math:
24" 1920 x 1080 = 2203 diagonal pixels (you can figure this out with the very simple A^2 + B^2 = C^2 Pythagorean theorem).
2203 / 24 = 91.8 PPI
32" 2560 x 1440 = 2937 diagonal
2937 / 32 = 91.8 PPI
Well, now we have a 40" monitor at 1440p. That has to be terrible pixel density, right? WRONG. This is not a standard 1440p monitor at 2560W. It's wide at 3440.
Let's do the math
40" 3440 x 1440 = 3729 diagonal
3729 / 40 = 93.2 PPI -- barely, but still better Pixel Density.
Also, and I bet this is going to surprise some of you, but a 4k standard size monitor at 40" is only about 19% better pixel density. Still good, but worth the extra $500?
Again, let's do the math.
40" 3840 × 2160 = 4405 diagonal
4405 / 40 = 110.1 PPI
Literally just 17 PPI > than the 93 PPI of this monitor, roughly an increase of 19% pixel density.
So, if you don't mind not having ultra sharp 1440p 27" quality, or 4k sharpness, then this is actually pretty darn good. This is some serious bang for your buck.
Community Reviews
This 40 inch MSI ultrawide stands out as a productivity first gaming monitor, with strong value, 155Hz smoothness, crisp enough text for coding, and plenty of room for side by side windows or spreadsheets. The IPS panel gets praise for color and viewing angles, and the included DisplayPort cable and KVM add convenience. The main drawbacks are the flat shape at this size, which can feel awkward up close, plus reports of pixel visibility, weak HDR, and no HDMI 2.1. A solid fit if you want width more than cinematic sharpness.
Common Questions (5)
It can feel too large when sitting close, especially because it is flat rather than curved. Several users found the center and edges feel uneven or projection-like at normal monitor distance, while others were comfortable only when sitting farther back.
The panel is around 93 PPI, so it is not as sharp as a 27-inch 1440p or 40-inch 4K display, but it is still considered usable for productivity. At typical viewing distance it can look crisp enough for coding and side-by-side windows, while sitting very close can make pixels noticeable.
No. This model does not include HDMI 2.1, so HDMI may not deliver the monitor's full refresh-rate potential. A DisplayPort cable is included, and HDMI 2.1 mainly matters if you want 4K at 120Hz or similar console use.
It works well as a productivity-first monitor and still handles gaming well at 155Hz. The wide 3440x1440 layout is useful for side-by-side documents, Excel columns, and multiple windows, while the refresh rate is described as plenty for casual competitive play.
HDR is reported as weak, and some units have had reliability or wake-up problems, including one failing out of the box and another taking seconds to nearly two minutes to wake from sleep. USB-C charging can also stop when the monitor sleeps.
AI-generated summary based on comments from the community. Updated ago
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43 Comments
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Many of you have probably heard that a 32" 1440p monitor has the exact same pixel density as a 24" monitor at 1080p. They are basically the same.
Do the math:
24" 1920 x 1080 = 2203 diagonal pixels (you can figure this out with the very simple A^2 + B^2 = C^2 Pythagorean theorem).
2203 / 24 = 91.8 PPI
32" 2560 x 1440 = 2937 diagonal
2937 / 32 = 91.8 PPI
Well, now we have a 40" monitor at 1440p. That has to be terrible pixel density, right? WRONG. This is not a standard 1440p monitor at 2560W. It's wide at 3440.
Let's do the math
40" 3440 x 1440 = 3729 diagonal
3729 / 40 = 93.2 PPI -- barely, but still better Pixel Density.
Also, and I bet this is going to surprise some of you, but a 4k standard size monitor at 40" is only about 19% better pixel density. Still good, but worth the extra $500?
Again, let's do the math.
40" 3840 × 2160 = 4405 diagonal
4405 / 40 = 110.1 PPI
Literally just 17 PPI > than the 93 PPI of this monitor, roughly an increase of 19% pixel density.
So, if you don't mind not having ultra sharp 1440p 27" quality, or 4k sharpness, then this is actually pretty darn good. This is some serious bang for your buck.
https://www.displayspec
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With nvidia gpu, I can make custom resolution and seem to be able to turn a 4k display into 8k.
My main monitor has problems so I had another monitor 4k 60hz 10bit for video watching only and was able to make it into 4k 144hz 8bit or 120hz 10bit...cannot seem to do 8k on this cheap backup one tho but seems to work well since I can tell the difference between 60hz and 120-144hz in games.
I literally just returned it. I was trying to replace the 49" OLED that I got from Sam's Club for 750, and figured this is almost a third of the price.
The biggest problem with it is that it isn't curved - so it almost appears like it's projecting out towards you, like an old CRT TV, and the center looks wider than the ends. It isn't actually that way, but sitting as close as you would to a monitor, and it being as wide as it is, is almost nauseating.
Very disappointing, but stuck with the Sam's Club 49". Wish it'd go on sale.
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