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Phanteks - ECLIPSE P400S TEMPERED GLASS ATX Mid Tower Case

( 4.8 Average / 27 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
Amazon $79.99 Free two-day shipping with Amazon Prime In stock $79.99
( 2 new from $79.99. Last updated 36 minutes ago. )
Newegg $79.99 +$5.99 s/h In stock $85.98
Newegg Business $79.99 +$5.99 s/h $85.98
* 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:


esk02k 78 points 26 months ago

Really nice looking case that comes with a magnetic LED strip which plugs into the controller round the back. It has three buttons hidden away under the top lip, a 3 speed fan controler, led settings (colour or hold for effect/on/off) and reset button. The cable management is good with Velcro tabs round the back making it easy to get a nice clean cable job. I didn't even have to use any cable ties. Fitted a kraken x62 (280mm) rad in the front perfectly but the case is very restrictive when it comes to air when using a big AIO and it gets very hot inside from being choked. I ended up cutting some holes in the front and my temps dropped by 10 degrees across the board. Thats my only con, the poor air flow. In a purely air configuration the case does fine, A friend of mine runs it with an air cooler and his temps are perfectly fine but its something to be aware of if you plan to use a big AIO in the front.

Petethegoat 4 points 26 months ago
from completed build Pete-PC

I was planning to get a basic P400, but when the tempered glass versions came out I couldn't resist. I decided on the P400S mainly because I wanted the top vent covers, but the sound proofing is welcome too- the fan controller is useless to me, but maybe I'll make a little electronics project out of trying to rig the switch up to an arduino or something .

The case itself is beautiful, and it feels incredibly well made. The entire build uses one extra cable tie, which is to take up some slack from the LED strip cable- everything else just uses the included loops on the backside of the case.

The only criticism I can really give is that the little rubber rings around the screwholes for the tempered glass panel are prone to coming off with the screws. This obviously doesn't have any consequences other than having to pull them off the screw and then replace them on the case.

I can't comment on the included fans, as I swapped both out for my ML120s.

inder 13 points 26 months ago
from completed build Work Station / Home PC Build

Love this case. Looks great sitting on my desk.

One with to be aware of is that it does not come with the adapter to work with asus aura.

bowlby87 10 points 25 months ago
from completed build P400s Build

Gorgeous piece of kit! Fabulous cable management options, great lighting features and the tempered side panel just sets it off. Haven't really noticed it being much quieter with the sound dampening material built into it. But not noisy at all.

WilliamCB19 37 points 24 months ago
from completed build Hesperus - First Build

This is perhaps my favorite piece of my entire build. It looks amazing, runs fairly quiet, and is very easy to work in. The tempered glass really shows off the internals nicely, and the black outlines around the panel enable you to hold it on the edges without having to clean off finger prints. There are a lot of other small things that make you feel like there was attention to detail put into the P400S's design.

As for cons, the cut outs on the PSU shroud are too small. They are meant for routing cables, but I couldn't fit anything but the smallest through them. That being said, that is the only complaint I have, and as far as cons go, that's a minor one.

If you are looking for a tempered glass case, this is one of the best at its price point, no question.

acw_hex 8 points 23 months ago
from completed build First Build

Great case that has enough cable management space and grommets, it comes with an RGB led strip, it is silent, and it has a tempered glass case. Has optimal airflow, better fan mounts than say the S340, and the radiators don't interfere with long GPUs.

spencrU 56 points 22 months ago
from completed build First PC - Overkill | Part Deux

Tempered glass is all the rage and this case is one of the reasons why. Looks fantastic and has tons of room to make building a breeze. Super easy cable management and the added integrated LED RGB strip(s) and fan controller are a nice touch. Easily one of the best mid-towers.

DopeHuman 8 points 22 months ago
from completed build Hybrid PC

AMAZING case, I absolutely love everything about it! 6/5 if I could!

Samothace 16 points 21 months ago
from completed build Vanilla Smoothie

So classy with the tempered glass. I really like how it's built.

fragment 17 points 21 months ago
from completed build ORION - Ryzen Gaming Rig

Coming from a Fractal Design Define XL R2 to this Phanteks Eclipse P400S was certainly a challenge as I haven't worked in a mid-size case for quite awhile. I love the design of this case. The tempered glass panel looks amazing, though I admit I find it a bit of a hassle to get on and off without my blood pressure going through the roof -- It would suck to have to deal with a broken panel. The compatibility with ASUS Aura is a bonus, though the case didn't come with the RGB_HEADER adapter to plug into the board. I don't think it would cost Phanteks too much to include these adapters for ASUS and MSI RGB.