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Phanteks - ECLIPSE P400S TEMPERED GLASS ATX Mid Tower Case

( 4.8 Average / 11 Ratings )






Part #



Black / Red


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
Newegg $79.99 -$10.00 +$5.99 s/h In stock $75.98
$10.00 mail-in rebate
Newegg Business $79.99 +$5.99 s/h $85.98
Amazon $96.14 Free two-day shipping with Amazon Prime In stock $96.14
( 5 new from $96.13. Last updated 3 hours ago. )
* Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon.com at the time of purchase will apply to the purchase of this product.

Price History (Excluding Tax) History:


Machigo 6 points 25 months ago
from completed build Machigo's gaming center

This case is amazing for it's price! The cable management is a breeze, the tempered glass is absolutely stunning and it even has RGB led strip included. Other features like 3 step fan controller are also included.

EvanRedman 38 points 22 months ago
from completed build Brisingr! My first ever PC

This case has very very good build quality and is very sturdy! Super easy to build in and the tempered glass adds a certain amount of class to any build that makes the purchase completely worth it!

CoreCalliber 15 points 22 months ago
from completed build Team Red - My First Build

Looks absolutely amazing, very very easy to work in, has cut outs everywhere you could need them and they are big enough for any cords you would need. Tempered glass panel tint is a bit darker than I thought but is still beautiful. LED included strip, led control, and front fans panel switches are also super convenient.

Seniccc 3 points 19 months ago

Greeaat case. Just so big and led in it aswell.

Lellulillu 7 points 19 months ago
from completed build VR Simulator Machine (Alpha3)

Pretty case with the included RGB LEDs really complementing its looks. If you don't wanna go full RGB, this case alone is enough to make almost any component look good.

keithv89 30 points 18 months ago
from completed build All-out First PC

This case is very nice. It was easy to open up and install all the components. It has room for 140 mm fans at the front and top and plenty of room to slide the motherboard in nicely. The standoffs were sturdy and set up properly and took little effort to install the motherboard. The tempered glass beautiful and rubber pieces makes the case appear that it was really thought out when it was designed.

nwdphoto 15 points 18 months ago
from completed build Quest for Power

Case is a treat to work in. Comes with tons of dust filters, plenty of room for cables, its quiet, has an RGB front and adjustable fans...What more could you ask for. Oh right, Phanteks provides tons of cheap case upgrades and ways to expand.

stupid_chris 6 points 17 months ago
from completed build PoweRED

This case is absolutely wonderful. Tempered glass, and LED strip, and such a high quality of build for this price point is amazing. Building in there was an absolute breeze, and cable management options were amazing. Can't recommend Phanteks cases enough. The only two things I would've liked to see in this case is an included full manual, not just a quick installation guide, and marked bags for the screws.

It pains me to do so but I removed a star because the said included LED strip is faulty. If I can get Phanteks to replace it for me though this is instantly going to be back to 5 stars.

theyolodragon 11 points 13 months ago
from completed build Dragon Slayer (my first build)

I love this case

ErnDawg123 2 points 3 months ago
from completed build Dad's First Gaming Computer

Great looking case, easy cable management and also comes with an LED strip, so you can make your computer nice and fancy looking.