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

  • dsraa - Wednesday, October 12, 2016 - link

    Ewww...what the hell is with that gross design on the non-windowed side??? What is that??? Reply
  • DanNeely - Wednesday, October 12, 2016 - link

    'artsy' vent holes for the topside mounted radiator you need to install to give this thing decent cooling. Reply
  • jsntech - Wednesday, October 12, 2016 - link

    I've been using the In Win BUC since a few months after I read AT's review ( I've been a big fan of the BUC the whole time I've had it for my i5-2500K system.

    No plans to upgrade anytime soon, but this 303 looks like it'd be a great replacement. I especially like the decent sound dampening design.
  • Iketh - Wednesday, October 12, 2016 - link

    Here's an idea for case reviews. Add lines from the paragraph to the parts referred in the paragraph. Reply
  • DCide - Wednesday, October 12, 2016 - link

    I usually use much smaller cases, so I'm not particularly interested in this one, but I really like the fact that it has 2 USB 3.0 plus 2 USB 2.0 ports on the front. The majority of motherboards have at least this many internal connectors, so it's a good idea.

    I wish more of the smaller cases would start to employ this arrangement.
  • jabber - Thursday, October 13, 2016 - link

    Nah I'd get rid of the logo, the audio ports (well at least the mic socket) and just have two front USB3.0 ports. Reply
  • DanNeely - Sunday, October 16, 2016 - link

    The front panel audio jacks need to support headphone+mic for wired gaming headsets. If they can do it with a combined port fine; if not the discrete mic port is still needed. Reply
  • 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. Reply
  • 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) Reply

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