Cooler Master MasterBox Q300L Review 

Really like how they made the dust filters a design element, best budget case out there.

This review is SO COMPLETE. Cooler Master did a right job sending this sample to the guy. Definitely will buy this one

Intro: really awful. Content: professional and clear.

Wasn't sure if I wanted this case but after all you've said it fits my needs perfectly and is a good price to boot. Thanks for your review

finally a Q300L Review!!

Thanks for making this video! I was just going to get this case, but saw minimal high quality reviews.

What a great, inexpensive case! Just finished a build for a friend's son and really enjoyed deploying this case.

I just got this case and almost had cancelled my order of it as i was indecisive on it. I must say I'm glad i didn't, it is better quality than i thought and videos of it don't do it justice! Its a great upgrade from my old bitfenix neo . Nice and modern and so silent. Don't be put off by some of the reviewers.

When I first saw this I knew I needed it. All I need to complete my new build now Is this case and a gpu

What a superb review. Fast but not too fast, clearly to the point and very clear on pros/cons. Excellent. Have a like and a sub

i bought this case for my first pc build, and its so far amazing!

Great review. I added a rear 120mm radiator and two 140mm intake fans as well as a 120mm top rear exhaust fan. Case is super cool. Thanks for the review which helped with my build. I love the case.

This feels challenging, in a way that rewards those on a budget whose willing to make it work, although some features may feel less budget friendly I feel theres a lot that can be done with this and i would definitively buy one if the only store that sells them in my country could get them sooner then the 17th of December. Honestly I cant wait to be able to buy this tiny behemoth.

Good review mate! You touched all the points I wanted answer for. Floor dust (removable, easy to clean) space inside for cpu fan, gpu. HDD,SSD rubber feet, and space. Thank you!

Best case for MATX lovers. Super compact, Super Cute, yet such great Air Circulation and -Cooling- . A Total WIN-WIN from Coolermaster

Just bought this for a budget garage build. Very happy with it

I was looking at cheap cases, and this review made my choice a lot easier... Thank you!

This is a pretty interesting case, i would like a more premium model with a PSU shroud and a tempered glass side panel, it would be interesting to see more designs to replace the front dust filter, i actually think that's the idea behind it.

A professional and thorough review of a case it's difficult to find information on. Thank you.

Good to see you back with another video 👍

Awesome case, you convinced me! A big selling point for me is the great airflow.

Awesome content delivery. You deserve more subs. Keep up the good work!!

I ordered a full build with this case! It will be here in a few days, I CAN'T WAIT!!!

Awesome review! Straight to the point, brief and describing what is important.

You sir have gained a subscriber, i love they way you explained everything even put a build onto it showing how you could cable manage. Awesome review im so close to building my first pc.

Thanks for this extended video. Wanted to know if you can mount 2x 2.5inch hdd's. and... yup 😄 Going to order this for my nephew 👌

I recently transferred my old gaming rig mATX internals to this case with 2 x 120mm intake fans and 2 x 120 mm exhaust fans. Currently working as entertainment PC in a TV rack. Excellent case, light, compact, ample space to mount 160mm PSU, 270mm 2.5 slots GPU, 160mm cpu Gammax400 air cooler, good air flow with 4 fans, easy to build, more space for cable management on the covered side. Thanks for you review 🙂👍👍👍

Well i own this case for 2 and something months now.. And its cool as hell. Althrought i don´t have beefy af and cool system, i had an mid tower case before with everything mATX in and it was big and ugly, so i decided to buy q300l. The build quality is pretty solid, screws are a bit tight tho. Installation of motherboard/IO panel was as good as in any other case, no problems with installing GPU either (but i dislike those popping brackets, they could really go with screws.. but you can buy them from Amazon). PSU installation was pretty simple and i recommend to stick all of the cables to the back before you put in PSU.. HDD bracket is really cool and i like it, but SATA cables may interfere with 24pin ATX power cable (but this depends on your routing scheme / motherboard). Installing SSD was a bit tricky (i mounted those rubber things backwards..) but pretty cool.. Cable managment support is pretty basic (pretty lot of tie points and lots of holes) but enough for 50$ case. I fit my Spartan 3 cooler without any problems.. and the positionable front.. well side IO panel is really cool if you tend to move too much on your chair and you may risk breaking some USB drives .. estetically, it is really freaking cool, i love those "cubes" and how they look in mid-light, but if you plan to install RGB fans/strips, the light may be actually so strong that the geometry effect dissappears and the light from strips/fans will cast really terrible circle shadows. And yes, the dust filter is cool, i actually had to clean it only once but its really convinient. For 50$, its a go-to choice for *any* mATX build. I give *8.75/10*

the acrylic side panel was incorrectly put in place at around 45 seconds into the video, the acrylic panel should slide under the power button piece, not sit on top of it.

brilliant example of form following function providing beauty - would be nice to have a premium version with thicker metal panels and perhaps TG

Extremely well done review. You have earned a sub. Thank you. UPDATE: Bought the case for my wife and it's a complete pleasure to build in it.

If this had been out 2 years ago, I would have considered it. I wanted a non-ATX small case. I built a powerful 140mm fan-based gaming PC in the Phanteks Evolv ITX. This MasterBox has the same sex appeal. Gaming motherboards support high-end integrated audio so only a GPU is needed. Unused slots are wasted space. My case is on my desk. With a windowed PC why throw it down on the floor? I want my guests to see what I put under the hood, not hidden under a desk.

I got this case and it was very nice for cable management and looks very clean in my setup

Cooler Master listen up here: Sell me the same case with the tempered glass sidepanel for $30 more and you've got a serious winner!

Yo lo tengo con una MSI B350m Bazooka, 2x8 de ram Corsair Led White, Ryzen R5 1600 cooler stock,. SSD m.2 WD Green de 480Gb, HDD WD Black de 2tb, 5 coolers NZXT F140 y una Radeon RX580 de 8gb. La verdad que este case me sorprendió, un espacio súper amplio, es muy lindo a la vista, bien ventilado y compacto. Es cierto que el panel I/O aparenta fragilidad, pero no es nada preocupante. Personalmente lo recomiendo.

Honestly, I've got nothing to say other than it's a great case for its price, especially in other countries where stuff might be a tad bit more expensive than others it's a lifesaver to not go over budget.

Amazing review of the case, the only thing left would have been some temp measures to see how it perform, but its an amazing review and great image quality!

Thanks Tim, this review was great! Definitely considering this case for my first micro atx build.

I had the boxlite 3.1 tg and it was terrible in regards to thermals but it looked really nice. Fortunately, i returned it and got the q300l. Which looks better in my opinion and has way better air flow and a cut out for the cpu plug. Great case! Love everything about it. Especially the price.

I really like this case. Thanks for examining it so well.

thank you for this review, helps me a lot in decision making

Thanks for the video, it was very informative and gave all the right information. I have now purchased one because of it.

Thank you for this review. There is no way I could stand those removable dust covers. Their website looks as though that was all metal which is why I thought it looked great. This is why I love RU-vid, thanks for your great review and saving me from purchasing the wrong item for me

Getting this for my own build, the dust filters that let you easily clean them without having to take the entire front panel off are so much easier to maintain for me. I think the front IO panel being on the side is actually really good for some, for example I usually position my PC so that the rear IO shield is facing me, because I think it lets the heat escape easier than if it faced the wall, so with the front IO panel on the side it's still easily accessible. If only the lower dust filter was more easily removable and the IO panel had a usb-c, then it would be perfect, but it's still good enough for me as is. Love that it's got the space for a 3.5 drive, I don't know if I could go without my storage.

Man- this case would look so good in white

thankyou for making this video it put my mind at ease

I have 6 fans in mine :D. Airflow is great. I also have mine laying on its side. Love this case.

3:10 he forgot the IO shield

a very good and a straight forward Review! Nicely done

oh thank u, u kind sir, u laid everything on the table in such a good manner. ♥

I have one, with a Corsair H100i V2 cooler on the front. It's desk based, and I wish the metal was just a little bit thicker as it bends to the touch and vibrates. The included fan is rubbish. Oh and my MATX board only has 2 fan headers...

A Lot of people say this case has very poor airflow, how do you guys feel about it?

I honestly thought the front panel is blocked, i just saw this video. Alright, must buy.

The rubber mounts under the PSU are definitely for grounding it not for vibration absorption, geez watch the verge

great cable management making it touch the hot backside of the mainboard

I ordered 2 of these for my Ryzen builds. My gaming PC, MSI B350 Mortar, Ryzen 1600X M.2 SSD, for my office PC, MSI A320 Grenade, Ryzen 1500X 128GB SSD paired w/2TB Barracuda as a Fusion Drive. Currently they are in P300s, looking for a smaller footprint with better air flow.

This is going to be my first build with this case

The only reason possible reason I would not but the case is that it doesn’t have a psu shroud, but other than that it’s fucking great

I bought a pc this is my case :') ❤️

heard this case gives bad thermals, even with fans installed.

This casing came highly recommended by the dealer. And now I wish I'd watched more RU-vid reviews. My GPU runs hot, fans constantly at 100% and I now have to buy more fans to try improve cooling - which the dealer can't guarantee will work. And the GPU fans are only about an inch above the PSU. What's the point of blowing hot air onto a hot device. As the presenter says... push the budget a little and get a better casing. I wouldn't recommend this casing for anybody installing a GPU.

I chose to buy this case on a whim for my first pc, and after receiving it, it looks very nice. Kinda late on looking for reviews tho 😂

also note something about this case is that this shares the same components as the Q300P, the one with RGB fans and handles that can be installed to this. personally, I want to buy and buy the handles separately.

Just wondering how many ssds and hard drives can you fit into this case. Love the video high quality

I like it~ Thank you for the review and great footage, I think I will buy this for my build :)

Great review, subbed!

great review! very informative!

Great review. Juts what I was hoping to see. I wonder if I might be able to get a Hyper 212 in this case. Coming in a 159MM I think it is safe to say it will fit but will be a tight fit like the one used in this review.

its a good case if youre looking to buy one ive had mine for a while now and i still love it

is the power suply loud or not btw you deserve more everyone who disliked was drunk and was aiming for the like

plastic front panel is a killer

I got this case and very happy with it👍

I don’t really look at amazon ratings but someone gave this case 1 star because it came with a small scratch

Thanks for the great video, I was on the fence about going mATX instead of my usual ITX (more expensive and harder to get) but after checking this case size, I think this'll be my next case for a new mATX build: Asus H610m-k + i3 Gen13, no video board, so it should run cool. I agree about the front panel location (side panel actually). I don't use it that much anyway and that's why I'm getting a motherboard with more USB ports on the back.

Ok so i got one of these. Awesome case but i have to point out that when my fans were mounted to it, because of the cheesegrater design the fans got about twice as loud and became quite audible. Im using be quiet! fans aswell which were silent mounted off the case. No noise though if mouned outside the case. So I fixed this by buying two cheapo 140mm front fans and hollowing them out and using them as a buffer between the case and the cheesegrater mount. Bit of a ballache but worth pointing out for those of you who want a quiet build. It wouldnt be a problem whilst gaming as i have headphones on but working from home doing light tasking stuff the noise would be annoying as it had a drone to it.

This is the case I'm going to be getting for me pc! Thanks, I'm for sure going to get this now :)

Thank you for this very helpful review!

i bought this and didn’t realize how small it is, i hope all the parts fit

You have got the side panel on wrong 0:30 The glass is not meant to go over the front io

so i cant fit a 360mm liquid cooler even though the height accomidates for it with extra room

If this case was tempered glass included, it will be perfect

Absolutely fantastic review. Well done. Torn between this and the vivo smart micro atx case.

Really great review, thank you. Just bought one.

Great review of this nice looking case. I bought one after this. You really should put up an affiliate amazon link or something. I wouldn't mind some money going towards you because your review was really helpful.

I'm tired of taking the side panel off to play games. So I'm thinking of changing to this. I NEED BETTER AIRFLOW😂

this dude should voice nature documentaries

Thx for explaining it so well i was going to put a 240 mil rad on the roof until u said it wont fit

38€ best price to value got a new pc after struggling to keep up with a GTX560 and a i5 2500..... If anyone is interested what I have got in (€) Powercolor Red Devil RX580 8gb Intel i5-8350K Be Quiet! Shadowrock TF2 Crucial ballistix 2x4gb 2400mhz 500W Be Quiet! PSU 120gb Kingston SSD This Case 1000gb HDD Toshiba MSI B360M PRO-VD This built was around 689€ here in Germany This PC shredds any Games I throw at it I slapped better thermal compound on the Card and on the CPU and overcloaked the CPU+GPU a little bit gaining around 16% more Performance Im so happy to get a pc this cheap and with this beast price to Performance ratio!!!

Looks flippable? Swap feet to top and use top dust cover on bottom, for placement on left side of your desk/monitor.? (PSU on top)

Brilliant review! Thank you

I like the way you review things

if this supports 2x200mm fans in the front for intake(even if modding is required) then goodbye h500p

3:00 False because I did install an AIO liquid cooler 240mm radiator and even with the top VRM heatsink being close to the radiator I still have a finger of space.

Very good review! Will buy!

Epic review, thanks

I like this case, but it's not nearly as thermally efficient as it looks, check other reviewers if you don't believe me (there's a slightly different version of it which has even worse thermal performance as well, the Q500L). Those grilles obstruct a lot of air-flow. Adding just one 120mm fan to the front will make a big difference, but it still won't have great cooling. You might as well go for 140's, as they generally aren't much more than 120's, and will be quieter and/or more powerful. With two 140's on the front, the cooling should be pretty decent, but then you're spending a lot of extra money. I actually bought this case on sale (for about $50 CAD), and I don't mind spending extra on good fans, as I was planning on doing that anyway with any case that I buy. I also wasn't planning to use a very powerful system, so the weak ventilation isn't a big issue for me (I'm only using 1x 140mm fan). You could also find a way to cut larger holes where your fans are pulling air in to help improve air-flow. It could make a big difference, but it's not easy to do without damaging the aesthetics of your case if you don't have the right tools or don't know exactly what you're doing.

Looks like the front mesh the filter sits on will have terrible airflow considering most of the surface area is mainly SOLID material rather than open space

Just saw that this was out today! Thanks for the review, Do you think this would fit a Corsair H80i and look good with RBG case fans?

Thanks for review.

I tired building with a MSI AMD B450 gaming plus motherboard and I couldn't get the power supply in and couldn't use it any suggestions?