In Win is one of the oldest manufacturers of PC cases and power supply units. The company was founded in 1985 and they recently celebrated their 30th anniversary. Unlike most other companies, In Win has remained almost exclusively focused on the design and marketing of PC cases and PSUs rather than trying to diversify into other areas of the market. Today In Win is offering one of the most comprehensive selections of cases, ranging from low-cost towers to entirely unique designs.


It's been a while since we had a deep look at an In Win design. In Win supplied us with the 303, one of their most recent ATX tower cases. In Win promotes the 303 as a combination of a unique aesthetic with practical design and a reasonable price tag. On paper, the 303 does appear to be a very interesting product. We shall have a closer look at its quality and features, as well as assess its thermal performance in this review.

In Win 303
Motherboard Size ATX, Micro-ATX, Mini-ITX
Drive Bays External -
Internal 2 × 3.5"
2 × 2.5"
Cooling Front -
Rear 1 × 120 mm
Top 3 × 120 mm
Bottom 3 × 120 mm
Radiator Support Front -
Rear Up to 120 mm
Top Up to 360 mm
Side -
Bottom -
I/O Port 2× USB 3.0, 2× USB 2.0, 1× Headphone, 1× Mic
Power Supply Size ATX
Clearances HSF 160 mm
PSU 240 mm
GPU 350 mm
Dimensions 500 mm × 215 mm × 480 mm
19.69 in × 8.46 in × 18.9 in
Prominent Features · Exquisitely Modest Aesthetic Design
· Radiant Luminosity
· Accelerated Tool-less Design
· User Friendly Dust Filter
· Versatile Cooling Options
Price $92.25

Packaging & Bundle

We received one of the very first samples of the 303 and In Win did not have the retail package ready at the time, so we cannot comment on it. We did receive the full retail bundle though and it was unsurprisingly basic. The company supplies only a typical manual, the required mounting hardware, support braces for the heavy expansion cards and ten cable ties.

The Exterior of the In Win 303


View All Comments

  • npz - Wednesday, October 12, 2016 - link

    Wow, talk about a 180 degree perspective. I think it's the mATX and smaller that's the outlier. It's only common for OEMs but are much less common for enthusiast custom pc services or individual system builders. Look at all the cases coming out, look at the motherboards, look at the heatsink sizes, the commonality of AIO 240mm+ watercooling, and heck just look at video card sizes.

    Nonetheless I would like to see reviews of smaller cases too. However even many of the smaller ones tend to be too big, since most nowadays are designed to fit full size PSUs, video cards, 120mm fans, etc.
  • BrokenCrayons - Wednesday, October 12, 2016 - link

    I don't think the numbers support that full ATX cases with custom coolers are the anywhere close to the norm. They get deceptively large amounts of attention from a small, but very vocal group of people. Those people are buying high margin parts with much larger markups than commodity equipment so various hardware manufacturers find it worth their while to make parts for them and send them out for free to sites like AT that then review them. The end effect is that it creates something of an echo chamber-like community that may fail to notice that they actually represent a tiny faction of the computing industry's customers.

    A "gaming computer" with a single GPU on a mATX board with stock CPU cooler and sub-500W "came with the $30 dollar Rosewill case I got from NewEgg" is common. Just as commonplace are the hundreds of millions of desktops and laptops purchased based soley on the fact that they're the lowest cost system on the store shelf that end up being dragged kicking and screaming into running games with maybe a cheap GPU that won't kill the power supply stuffed into whatever expansion slot might be open. I'd argue those situations represent the average PC gamer far more accurately.

    Unfortunately, those sorts of people aren't as exciting to talk about and don't earn companies large amounts for each sale. Competitive forces in the market dictate they generate very small monetary returns that evaporate completely the moment someone picks up the phone to call for technical support or to RMA something. Without that excitement, that group is largely ignored even though they're a huge majority.

    Not to go off on a tangent, but the reason why computers aren't "fun" to me anymore is partly because the mid- to low-end gets ignored. I used to cackle gleefully in my crappy apartment, making my spouse want to leave to work on the car or something equally non-technical, as I squeezed an extra 33MHz out of my already obsolete Pentium 100 and then grumble about how it made no difference in a benchmark becase of that awful Cirrus Logic video card holding back those gobs of extra CPU power from shining through in Mechwarrior 2. That was fun stuff...back when Tom's Hardware Guide was actually run by ex-M.D. Tom himself.
  • npz - Thursday, October 13, 2016 - link

    The enthusiast market is producing more stuff for the larger cases. If you look at the major brands, most of their stuff are the ATX.

    The only volume production of mATX or ITX cases are for OEMs. The usual towers from Dell, Acer are mATX while the slim towers are ITX.

    However, what you point out confirms my issue even when trying to go small: the mATX are almost as big as full ATX. The only difference is that it's either shorter (but same width and nearly same depth and mid size ATX) or it's a big square. That's the only way to fit a full size gaming GPU and full size PSU. I have several mATX and they're all like that.

    Having a shorter case doesn't help in useful space savings when it's just as fat.
    So if the mATX is still big I figure I might as well go full size which I why I'm getting rid of most of my mATX stuff. The only exception would be slim cases Antec Minuet.
  • fcth - Thursday, October 13, 2016 - link

    I definitely see mATX as the ideal case size these days. With mATX you can fit a large CPU cooler if you are air cooling, up to two high-end video cards, and you get 4 RAM slots. You also still get a good amount of space for cooling. Frankly the vast majority of builds would be fine with mini-ITX, but those cases tend to lose too much cooling for my tastes. On the other hand, when you are talking about mATX vs. ATX, you are really talking about extra expansion slots that basically no one needs, and a slightly smaller fan area at the front of the case (and we have gains there as well from getting rid of external bays).
    The big problem with mATX is that options (and reviews) are extremely limited, especially for enthusiast-class boards and cases. Hopefully more reviews would spur more availability.
  • alelock - Wednesday, October 12, 2016 - link

    The front badge absolutely ruins this case.

    My loge for the Anidees AI-Crystal lives on! ( )
  • djscrew - Wednesday, October 12, 2016 - link

    Ugh, that cream color harkens back to a time of sickeningly ugly cases. Reply
  • djscrew - Wednesday, October 12, 2016 - link

    The interior and glass looks fantastic. The rest of the exterior looks like absolute dog shit. Reply
  • Aerodrifting - Wednesday, October 12, 2016 - link

    Is everyone purposely avoiding the topic on cooling or plain forgot?
    There is little clearance to install fans on the "bottom air intake" due to any ATX motherboard extends to the bottom of the case, Not to mention the space underneath the case is tiny due to short case feet. The top/side vent is a joke.
    Sure the glass looks good, But I will not consider building any high end system inside this case if it's going to cook the components with its "no-airflow-design"
  • DanNeely - Wednesday, October 12, 2016 - link

    I suspect the bottom holes are intended as passive intake for a negative pressure design with the fans on a top mounted radiator providing the overall airflow. I'm not a fan of bottom intake without casters or really big feet. On a carpet standard tiny feet tend to sink in deep enough to plug them entirely. Not a problem on hardwood, but your case ends up acting like a vacuum cleaner and the bottom mounted filter doesn't have visible indicators when it gets filthy and clogged. Reply
  • Aerodrifting - Wednesday, October 12, 2016 - link

    My point exactly, Also "negative pressure design" never worked well, It's more of an excuse and translate to "we messed up on the airflow design".
    I have been building computer for over 10 years, In Win never struck me as a quality case maker. One day they woke up and suddenly decided to make a case with glass side panel and put a $300 price tag on it (909) does not put them in league with companies like NZXT, Corsair, Cooler Master who knows what they are actually doing.

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