CoolerMaster MasterBox Q300L Gaming Mini Tower Computer Case with Window Panel Black
Computer Cases

CoolerMaster MasterBox Q300L Gaming Mini Tower Computer Case with Window Panel BlackCode: 14060020

Key features:

  • For Micro ATX/Mini ITX motherboards
  • Tempered Glass Side Window
  • Graphics Card Length 360 mm
  • CPU Cooler Height 159 mm
  • Dimensions 387 x 230 x 381mm
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58,23
DeliveryFri, 13 Sep - Thu, 19 Sep
+44,90 €

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from 58,23 €

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Prices are calculated for:Malta, Other Payment Options

  1. 58,23 €

Description

With side window, air filters and door panel that can be mounted in six positions. Can be mounted in upright or horizontal position.

Patterned magnetic dustfilters

Special pattern on the dust filter creates a unique outlook for the chassis.

Modular I/o panel

The I/O panel can be adjusted to six different locations. On both side of the body you can install the I/O panel at the front, top or bottom.

Clean routing space

Behind the motherboard tray, 28mm of space is offered for cable management.

Excellent thermal performance

The open design of the perforated front, top and bottom guarantees excellent thermal performance

Fan and Liquid Cooling Support

The front supports up to two 140 mm fans and up to one 240 mm radiator. The rear supports one 120 mm fan or radiator and the two top 120 mm fans. All of this ensures that you don't have to compromise on performance.

Cleaning of main components

The MasterBox Q300L case supports CPU coolers up to 159 mm in height, graphics cards up to 360 mm in length, and power supplies up to 160 mm in length.

Manufacturer

CoolerMaster

Specifications

Main Specifications

Colour
Black
Size
Mini Tower
Compatible Motherboard Type
Mini ITX, Micro ATX

Dimensions

Height
378 mm
Width
230 mm
Depth
387 mm
Maximum Graphics Card Length
360 mm
Maximum Processor Heatsink Height
159 mm

Drive Bays

Internal Hub 3.5"
1
Internal Hub 2.5"
2

Fan Positions

Front
2
Rear
1
Top Positions
2
Bottom Positions
1

Water Cooling

Radiator Position
Front, Back

Specifications

Connectivity
Audio, Microphone, USB 3.0
Extras
Side Window
Gaming
Yes

Important information

Specifications are collected from official manufacturer websites. Please verify the specifications before proceeding with your final purchase. If you notice any problem you can report it here.

Reviews

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+13Images

Reviews by our members

  • Gio-V

    Verified purchase

    Beautiful compact, fits m-atx very comfortably. The only downside is that the second pcie slot, which I used for a wifi kit, almost touches the power supply... Temperatures are moderate, but AMD 3600-5700 and similar chips up to 100w are just fine with 2 14cm fans in the front, 2 12cm fans on top, and one in the back

    Translated from Greek ·
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  • platonpp13

    Verified purchase

    Very nice case. It has plenty of space and you can do good cable management even with a non-modular power supply. The downside is that the construction is a bit flimsy and the transparent panel scratches easily. For airflow, I have installed 2 be quiet intake fans and 1 that it already had inside but I will need to add another one. It does make quite a bit of noise compared to a be quiet case. For the price, it is worth it, quite small.

    Translated from Greek ·
    • Space
    • Cable management
    • Dust filtering
    • Value for money
    • Construction quality
    • Moderate noise
    • Air flow
    Did you find this review helpful?
  • Jörgeone
    3
    2 out of 2 members found this review helpful

    Verified purchase

    I just want to mention because I didn't see it and got fooled, the power supply that goes into the bottom of the box and you will have a hard time screwing it in because for some reason they thought it was a good idea to put a groove and have it facing inward, and there are metal pieces on the outside that prevent a screwdriver from entering. I really don't know what's going on, it doesn't serve any purpose, it's just inward. ?‍♂️

    Translated from Greek ·
    • Space
    • Cable management
    • Construction quality
    • Moderate noise
    • Dust filtering
    • Value for money
    • Air flow
    Did you find this review helpful?
  • Angel Mastoris (Selo)
    4
    1 out of 1 members found this review helpful

    Verified purchase

    Being my first PC Build, I had no difficulty with this particular case. Everything fit in and cable management was easy. The downside of the case is the HDD Bay, which is not really a bay but just a metal frame where you screw the hard drive on top. Other than that, it's a good case for its price!

    Translated from Greek ·
    • Construction quality
    • Dust filtering
    • Air flow
    • Value for money
    • Space
    • Cable management
    • Moderate noise
    Did you find this review helpful?
  • Αλφρεντο
    2
    14 out of 36 members found this review helpful

    I believe that for this price, €50, I would have gotten something of better quality in terms of construction and I regret trusting the reviews here. Guys (and I say this for your own good), if you don't have a basis for comparison, don't write reviews, because we also spend our money and not everyone easily earns money in these difficult times. Thank you very much!

    Translated from Greek ·
    • Silent
    • Dust filtering
    • Cable management
    • Air flow
    • Space
    • Construction quality
    • Value for money
    Did you find this review helpful?
  • raz8607
    4
    3 out of 3 members found this review helpful

    Verified purchase

    Very good case, quite spacious for its size with a simple and tasteful design (subjectively speaking). I was a little bothered by the side window not being glass but plastic, but considering its price, I can't ask for much more. It comes with a complete manual for installing components, screws, ties, it really didn't lack anything! I don't have an opinion on its fan, as I replaced it directly with another one from the market. Check out all the specs here: https://www.coolermaster.com/catalog/cases/mini-tower/masterbox-q300l/#specifications

    Translated from Greek ·
    • Space
    • Cable management
    • Silent
    • Air flow
    • Value for money
    • Construction quality
    Did you find this review helpful?
  • karvei
    5
    5 out of 8 members found this review helpful

    Verified purchase

    This review is about the colour: White

    It does not have a PSU shroud, but with proper cable management it looks very nice. I have installed a 6700xt (now 3060 because I transferred it to a mining rig) with three fans and I have also installed two front fans and it could fit a larger card. For cooling, I have installed an Arctic Freezer 34 eSports and it is 5-6 millimeters away from the "glass". Why "glass"? Because it is not tempered glass but acrylic. For some, it is a big problem but I take good care of it and for 2 months it only has a tiny scratch because the microphone always touches there. It is compact and does not take up much space but it can fit large coolers, even water cooling with a radiator up to 240mm I think, and it maintains good temperatures. THOSE WHO SAY THE OPPOSITE, DID NOT INSTALL FANS. No case can maintain good temperatures without front fans and I believe that should be obvious.

    Translated from Greek ·
    • Cable management
    • Construction quality
    • Silent
    • Air flow
    • Value for money
    • Space
    • Dust filtering
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  • Mike_Tsolakidis
    4
    2 out of 2 members found this review helpful

    Verified purchase

    Quite good for a small system.. on ryzen 5 3600 and 1660 ti quite low noise and temperature.. cable management almost non-existent despite being a full modular power supply! It fit a 1080 ti but it didn't work for me because of too many cables! I would like glass instead of plastic diagonally and I would like the handle to be included, which by the way I couldn't find anywhere! Also, I would like a 140 mm fan at the back!

    Translated from Greek ·
    • Space
    • Construction quality
    • Silent
    • Dust filtering
    • Air flow
    • Value for money
    • Cable management
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  • johnniek13
    5
    19 out of 19 members found this review helpful

    Verified purchase

    I bought this particular product with the purpose of placing it on a shelf with a height of 400 mm above the screen, and with the side facing as the front part for my 11-year-old son, for school and for Minecraft.

    Installed components:
    Motherboard: GIGABYTE AORUS B550M PRO-P
    CPU: AMD RYZEN 5600X with stock fan
    Memory: G.Skill Trident Z Neo 16GB DDR4 RAM with 2 Modules (2x8GB) and a frequency of 3600MHz F4-3600C16D-16GTZN
    Storage: M.2 Samsung 970 EVO PLUS 500, SSD 240 Crucial (SATA), HDD WD 500 (SATA)
    GPU: MSI 1050ti GAMING X
    Fans: Front - 2x140 Thermaltake Pure Duo, Rear - 2x120 Thermaltake Pure Duo, Bottom Right - 120 fan that came with the case
    Power Supply: Be Quiet 9 600W

    With 5 fans, 4 RGB, 2 SATA drives, and all the other cables, the result is extremely satisfactory. Due to the position of the case, it works without filters on the top and front (now on the side).

    Translated from Greek ·
    • Cable management
    • Construction quality
    • Silent
    • Dust filtering
    • Air flow
    • Value for money
    • Space
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  • manthost
    5
    7 out of 7 members found this review helpful

    It's ridiculous to start a conversation at 40 euros. If you want a high-end machine to fit, under certain conditions you will manage, but obviously you will also encounter problems. Up to 3070 with two fans and a 2700X, I didn't find any problems anywhere. In my opinion, it remains an all-around case that you can do everything with, as long as you don't want to squeeze in parts that wouldn't fit well in a mid-tower. Check out the equivalent thermaltake at 55 euros, but in terms of volume, it will increase dramatically and you will have paid 25-30% more money.

    Negatives: Moderate noise, dust that passes relatively easily, the mesh of the base needs attention, and the plastic panel becomes scratched in two years.

    PS: Put some glass on the side panels, it's a shame for such a beautiful case to ruin its image for this reason.

    Translated from Greek ·
    • Space
    • Cable management
    • Construction quality
    • Air flow
    • Value for money
    • Moderate noise
    • Dust filtering
    Did you find this review helpful?
  • Ask_Zoe
    5
    2 out of 4 members found this review helpful

    Verified purchase

    Excellent box with as much space as needed, and with the proper placement of fans it achieves very good temperatures. Out of all the boxes I have used, it is the only one for which I would pay over 100 euros

    Translated from Greek ·
    • Cable management
    • Construction quality
    • Dust filtering
    • Air flow
    • Value for money
    • Space
    • Moderate noise
    Did you find this review helpful?
  • Costas_Giotis
    5
    4 out of 4 members found this review helpful

    Verified purchase

    I buy it for the second time for a new build I am making.
    It is the best case for micro ATX.
    Dual front or top cooler for CPU and single front cooler for GPU, in front of the power supply (bottom).
    With the many holes on the top, bottom, back, and front, I can say that it sounds a bit, depending on the fans installed.
    It is very beautiful and presentable to sit on the desk.
    Personally, I have it with fans with white lighting. I consider it sleek, elegant, and discreet.
    There is enough space for it to breathe easily without looking like there is excess (like some small cards and a GPU and a fan in a case that fits a 2,000cc engine).
    SSD and HDD can be "hidden" in the cable management section for even greater discretion and minimalism.

    Translated from Greek ·
    • Space
    • Cable management
    • Construction quality
    • Dust filtering
    • Air flow
    • Value for money
    • Moderate noise
    Did you find this review helpful?
  • Leohoxha21
    4
    5 out of 6 members found this review helpful

    Verified purchase

    For its price, it is very good and especially beautiful on the desk. Purchased in March '18. It has very good air flow but at a high noise cost... This is the huge issue - which made me change it now during the quarantine, where, naturally, I spent many more hours at home. After 1 - 1.5 hours of the fan noise (2 140mm in front, 1 120mm pre-installed at the back and 1 on top, and the stock cooler of the Ryzen 5 2600), it started buzzing and giving me a headache. Especially at night, it was unbearable to the point where I closed all the fans and set the cooler to 25% just to be able to concentrate on my studies... Overall, it is recommended, but if you have it next to your head for many hours with many fans without headphones, it will make you dizzy. I switched to the Corsair Carbide SPEC-DELTA RGB (almost double the price) and my problem was solved.

    Translated from Greek ·
    • Space
    • Cable management
    • Air flow
    • Value for money
    • Construction quality
    • Dust filtering
    • Noisy
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  • Marionaxos
    5
    2 out of 2 members found this review helpful

    The box is elegant and spacious despite its size. It can hold 5 more fans from all sides and keeps the box at low temperatures. The shapes in the front and top are magnetic and can be easily removed if you don't want them.

    Translated from Greek ·
    • Space
    • Cable management
    • Construction quality
    • Silent
    • Dust filtering
    • Air flow
    • Value for money
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  • tsosmi.diko
    5
    4 out of 5 members found this review helpful

    As a fan of small PCs, I find it excellent, I like the adaptability that the case provides in combination with its nice appearance. The construction is solid and sturdy without being heavy.
    It has enough space at the back for cable management, even for a fully wired PSU.
    The cabin is spacious and I didn't encounter any issues during assembly.
    It accommodated a Cryorig H7 CPU cooler with 1-2 cm of extra space.
    The case is perforated all around, but covered with magnetic filters. I don't know the efficiency of the filters yet, but if I don't make any corrections in this review in the future, it means they are fine.
    With my 3 fans (2 becool in the front, 1 cryorig at the back), the temperatures are good and I have no issues with noise.

    Translated from Greek ·
    • Space
    • Cable management
    • Construction quality
    • Silent
    • Air flow
    • Value for money
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  • uns
    4
    3 out of 4 members found this review helpful

    Quite a good solution. On the negative side, the glass scratches very easily and the case is not very sturdy.

    Translated from Greek ·
    • Space
    • Cable management
    • Silent
    • Dust filtering
    • Value for money
    • Construction quality
    • Air flow
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  • Jakester1997
    5
    9 out of 12 members found this review helpful

    Verified purchase

    Very satisfied with the quality and performance, and for those who complain about the installation process, it's better not to mess with things you don't know.

    Translated from Greek ·
    • Space
    • Cable management
    • Construction quality
    • Silent
    • Dust filtering
    • Air flow
    • Value for money
    Did you find this review helpful?
  • teochnologist
    5
    26 out of 30 members found this review helpful

    It is excellent for the money it costs, especially for those looking for a microATX form factor. Although there have been some cost-cutting measures, the overall quality is very good considering its price. Greek unboxing video: https://www.youtube.com/watch?v=qDZ31sYuEwI

    Translated from Greek ·
    • Space
    • Cable management
    • Dust filtering
    • Air flow
    • Value for money
    • Construction quality
    • Moderate noise
    Did you find this review helpful?
  • Amfilochios_Iordanidis
    5
    5 out of 5 members found this review helpful

    It is a very high-quality case that accommodates Micro-ATX / Mini-ITX motherboards with space to accommodate 2 2.5" drives and 1 3.5" drive. It has a striking appearance and is mainly designed to be placed on top of the desk, with ample space for a large graphics card. The construction features good quality metal elements, although the plastic parts could use some improvement. However, it is perfect for combining with middle-tier hardware, such as a Ryzen with an RX 580 and 1 SSD & 1 HDD. At 40+ Euros, it offers great value for money for a reputable case!

    Translated from Greek ·
    • Space
    • Cable management
    • Construction quality
    • Dust filtering
    • Air flow
    • Value for money
    • Moderate noise
    Did you find this review helpful?
  • Gerasimos_Panagiotis_Tzirachis
    4
    7 out of 8 members found this review helpful

    The only negative thing I have found is that it has limited space for cable management. You will either need a (semi)modular PSU or it will drive you crazy until you organize it. It is VERY STYLISH, small, and I find it to be the ideal solution to have on your desk, especially if you also like minimal design

    Translated from Greek ·
    • Construction quality
    • Silent
    • Dust filtering
    • Air flow
    • Value for money
    • Space
    • Cable management
    Did you find this review helpful?
  • Dimitris_Savva
    3
    7 out of 32 members found this review helpful

    The box is aesthetically pleasing and very small. It does not have any sound insulation for the fans. The tempered glass is very prone to scratches. It has plenty of space for cable management at the back. You can see the PC build we did with this specific case in the video: https://www.youtube.com/watch?v=hW_NK6tUdTA

    Translated from Greek ·
    • Space
    • Cable management
    • Air flow
    • Construction quality
    • Dust filtering
    • Value for money
    • Noisy
    Did you find this review helpful?
  • andreaspotami
    3
    8 out of 28 members found this review helpful

    Average box! There are better ones at the price of 50 euros. It has a nice appearance but don't be fooled by it, guys. It's not quiet at all since it's perforated from all sides. If you plan on installing a cooling system, avoid it because the noise will bother you. Zero insulation. I touched the glass 2-3 times and it has scratches on it. If anyone wants, I can send them photos to see.

    Translated from Greek ·
    • Space
    • Construction quality
    • Dust filtering
    • Air flow
    • Value for money
    • Cable management
    • Noisy
    Did you find this review helpful?

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SizeMini TowerMidi TowerMidi TowerMini TowerMini Tower
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