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
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  • nagi603 - Thursday, October 13, 2016 - link

    Well...not a fan of always-on LEDs. And the back design? Couldn't the back would have fitted a double 120mm rad / two 120mm fans if they added a few centimeters more to the width? That vented side won't allow for much airflow. (As it is reported by the graphs describing a poor thermal performance.)

    Plus, it almost looks beige.... D:
  • colonelclaw - Thursday, October 13, 2016 - link

    I generally get at least 5 year's use out of a case, so if I was purchasing one right now I would have to insist on it having USB Type C. Other than that, it looks fine.
  • 3ogdy - Sunday, October 16, 2016 - link

    Yeah, other than that, you'd be spending the next half a decade with a 3.6 decade old fridge in which components aren't even kept extremely cool (as in lower-than-ambient-temps cool)
  • valinor89 - Friday, October 14, 2016 - link

    Is it as beige as it looks on my work screen?
    Looks like an old tower with that color.
  • JohnMD1022 - Saturday, October 15, 2016 - link

    No optical drive bay = no buy.
  • 3ogdy - Sunday, October 16, 2016 - link

    I feel you. The thing is...some short while ago I was in the market for a BD-RW drive. I realized it's more expensive and bulkier to carry optical media with me (BD-RW discs, for instance). Plus, the transfer rates aren't exactly USB 3.0 / 3.1. Therefore, I'm sticking with my external Samsung DVD-RW drive I'm not even using...that is until I migrate entirely to external SSDs. I hate HDD reliability and shock resistance anyway.
  • 3ogdy - Sunday, October 16, 2016 - link

    I'm really struggling to find the difference between this and a 1980s fridge such as this one:
    Maybe the side where the handle lies, opposed to where the IN-WIN logo is put...also featuring colors from the same era's general color theme.

    So, the question is, how cool can this hundred dollars fridge can keep my salami?
  • SeanJ76 - Monday, October 17, 2016 - link

    Ugly and normal
  • Membus - Wednesday, November 23, 2016 - link

    Actually. The Black one is nicer looking by far. The one I'm thinking of buying. Just for the Glass/price.

    It's a shame the test wasn't done with some aftermarket fans although that is impressive that it's able to passively cool. People who read the article would know that the temps are with out any fans at all.
    The lack of cable management kinda bothers me a little.

    A custom loop in this thing would be very nice.

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