Antec 300 Mod

Today I will show a little modification I made to an Antec 300 case.

I bought the case for a Folding@Home computer project which is dedicated to our support of the Folding@Home Project.

There are several people we support with this project and are currently or their families are currently effected by cancer and/or related diseases.

On to the actual Mod.
First, the case. I decided to go with the Antec 300 case because it offers a good mix of value, cooling performance and expandability. This is the first version of the 300. The case has a bottom mounted PSU. There are 2x 120mm fan inlets in the front, 1x 120mm fan outlet in the back and 1x 120mm fan outlet on the top, seated to the rear. If the case would have a dual fan setup on top and maybe gained a couple of inches in height, the top could be an ideal placement for a dual radiator or an additional dual radiator. I am planning to install a dual radiator in the front two fan inlets. This should be adequate for a single CPU loop.

Antec 300 box
I did a bit of research on this case and many other cases. This case was the best fit considering the price. I wanted at least one 5 1/4 drive bay remaining available, so i can still install a CD/DVD drive. Having  3 available is of course better. This allows for adding additional devise such as a 2nd CD/DVD Rom or a Hot Swappable drive bay.  The Antec provides 3 bays and below it are two 120mm fan mounts located. This is an ideal setup. The spacing, positioning and removability turned out to be a good match for this build as well.

Here you can see the two fan mounts below the drive bays.
The fan screen has wide and large holes and needs little to no modification.

Antec 300 front fan inlet
These make for good airflow and provide enough room to install a fan filter if preferred. I only use the 2 top most screw holes and the 2 bottom most screw holes. You could also use the 4 screw holes left in the middle for good measure but I find it not necessary. Another gamble here is the spacing between the 2 fans. The spacing between fan mounts for dual and triple radiators various from manufacturer to manufacturer. I got lucky here again as the Danger Den radiator perfectly.

Antec 300 front fan inlet closeup
I will be using a DangerDen 240mm radiator for the Water-cooling setup. This is were the fitting of the radiator comes in. It is very difficult to determined ahead of time if a particular radiator will fit into a certain part of a computer case. Most manufacturers do not make the specific measurements available to the public.
I did a little guestimation work on this. I actual took the exact measurements of the radiator and went to a store that had a Antec 300 on display and measured it there for fitting. Of course if that would have not worked out than I would have to look for a different case for this project since I already bought the radiator.

It still was a close call but have a look.

Antec 300 radiator
In this picture you can also see the remaining  panel for the 3x 5 1/4 drive bays. There is actually another bay underneath it  which I had to remove to fit the radiator.

Antec 300 radiator fitting
The panel is not screwed but bolt on. Those are very lightweight aluminum bolts that are pressed in place in a screw hole. A very inexpensive method to replace a more expensive but useful screw.

Time to bring out the Dremel. These bolts can fairly easily be drilled out. The material will give pretty easy but the angels can be a bit tricky.

This is what it looks like with the panels removed

Antec 300 internal
Time to move in.
Unfortunately the hole spacing of the two fan mounts on the Antec and the hole spacing on the radiator are not perfectly lined up. Who would have expected? Antec obviously did not know of my plans.

Antec 300 radiator placement
Good enough, one fan mount will do. Lining up the radiator.

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Mounting it.
I used an old fan as a shroud. I removed the blades etc.

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Aaaand .. she’s done.

Moving some of the rest of the parts.

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This is a nice, easy and clean way to get water cooling for a decent mid range system.
The modification itself is not to complicated and could be accomplished by someone who is a little bit handy with tools and has knowledge of computer components.
The internal mounting also conceals the water cooling and makes the case appear just like any other case.
It also further helps to reduce the noise and makes this build near silent.

Here are a few more pictures from the system I installed.

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Enjoy and let me know what you think.