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Phanteks - ECLIPSE P400S ATX Mid Tower Case

( 4.2 Average / 5 Ratings )






Part #





ATX Mid Tower

Includes Power Supply


Internal 2.5" Bays


Internal 3.5" Bays


Motherboard Compatibility

ATX, EATX, Micro ATX, Mini ITX

Front Panel USB 3.0 Ports


Maximum Video Card Length

280 mm / 11.024" With Drive Cages
395 mm / 15.551" Without Drive Cages

Completed Builds Using This Part

See All Completed Builds


Merchant Base Promo Shipping Tax Availability Total
Bytes At Work €84.00 +€6.95 s/h €90.95

Price History (Excluding Tax) History:


Clemeit 21 points 28 months ago
from completed build An Intro to Computer Building

Looks very nice. Very spacious inside, allowing for superior cable management. I like the RGB LED lighting effects, and the optional RGB LED strip to complement the case lighting is a great addition.

It's a fingerprint magnet. Break out that microfiber cloth and rubbing alcohol as soon as you're done building.

Only negative I've encountered is the front air intake. The channel for air to run through is very small. I have a AIO radiator attached to the front, and I was noticing that my CPU wasn't running as cool as it should. I decided to take off the front panel to see if that made a difference. Sure enough, my CPU temp dropped 9C while under full load. Might be a better idea to mount AIO radiators on the top, as the airflow in the front just isn't quite there.

Clemeit 158 points 21 months ago
from completed build Licensed Driver

Looks totally awesome, and it was easy to build in. The airflow through the front is sub-optimal. Taking the front cover off lowers my CPU temps by nearly 10C. (I'm using a front-mounted 280mm radiator)

kimaraeric 10 points 20 months ago
from completed build My First Build

pretty good for a low power low-cost build. While it has space for dual GPU's and the like unless you're planning on a custom loop as well which again you have space for I'd think about something with better ventilation. Collective wisdom is that it gets a little warm under more demanding workloads see the Gamers Nexus Review. Originally had a define C from Fractal which I was in love with until I was taking standoffs off the bottom of my bad motherboard with pliers. Probably my b as a first timer and I may give fractal another go in the future but for now the phanteks is great. For $80 you get rubber grommets, psu shroud, sound dampening, magnetic dustfilters, RGB led, and two fans. Couldn't really ask for more and if you want to spend an extra couple bucks they have a tempered glass version.

TrueStengo 22 points 16 months ago

Good and smooth looking case. I only wish i had a GPU power cable cutout.

Leroy90 7 points 13 months ago
from completed build First New PC since 2009

Great build quality, great looks but not the greatest air flow, happy with it and will likely use again in more builds.