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Silverstone > 
Item#: 9SIA0AJ3T02804

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  • Specifications
  • Warranty & Returns
  • Reviews

SilverStone Fortress Series MicroATX Mini Tower Computer Case

SilverStone Fortress Series
  • Super small footprint with no cables on four sides
  • Stack effect layout with 90-degree motherboard mounting
  • Supports graphics cards of any length
  • Supports full tower CPU coolers
  • Mandatory cable routing design
  • Includes hot-swap bay for quick data storage needs
  • Backside hard drive mounting with passive cooling for silence


SilverStone Fortress Series

As SilverStone engineers started working on the third model for the Fortress series, they contemplated the future of computer chassis and ways to improve it for home/office integration. So the Fortress FT03's design goal was to simply give back as much user space as possible by reducing chassis depth to unprecedented level. The engineers also wanted to accomplish the change in design without compromises to the chassis's ability in accommodating upper mainstream components.

Traditional computer chassis designs take up desktop room by not only their physical footprint, but they also require additional space for cable connections. With the FT03, there are no such restrictions because its beautiful, 2.5mm thick, sand-blasted and anodized aluminum outer shells have no cable connectors to be found on all four sides, which frees up tremendous amount of desktop real estate for users.

SilverStone Fortress Series

The interior of the chassis utilizes SilverStone's unique stack effect cooling layout so a Micro-ATX motherboard is mounted in 90-degree rotation to take advantage of hot air's natural tendency to rise. This design also enables the FT03 to support graphics cards that are as long as 13.7 inches without the chassis taking up similar room depth-wise. In addition, the chassis also supports three 3.5" hard drives with one capable of hot-swapping function and one 2.5" drive bay for excellent storage flexibility.

SilverStone Fortress Series

For a chassis that may redefine a new design direction for the desktop computer with its revolutionary new proportion and usage model, the Fortress FT03 is simply perfect for anyone looking to build a striking yet fully functional and discreet system.


  1. Removable top cover for maximum ventilation and cable management
  2. Optional 92/80mm top fan slot and optional two bottom 80mm fan slots
  3. Rotated 90-degree motherboard mounting, borrowed from the RAVEN Series
  4. Compatible with CPU coolers up to 167mm tall
  5. Independent 3.5" and 2.5" HDD compartment for advanced cable management
  6. Filters included for all intake area to prevent dust buildup
  7. Top-mounted buttons and I/O ports include USB 3.0
  8. Tool-less and hot-swappable SATA hard drive cage
  9. 2.5mm thick anodized aluminum outer front and rear shell
  10. Stack effect cooling layout with three 120mm fans
  11. PSU area for power supplies up to 180mm deep

SilverStone Fortress Series

Learn more about the Silverstone FT03B

Warranty, Returns, And Additional Information
  • Warranty
  • Limited Warranty period (parts): 1 year
  • Limited Warranty period (labor): 1 year
  • Read full details

Customer Reviews of the Silverstone FT03B

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3 out of 5 eggsGood But Not Without Flaws....

Pros: Beautiful Design
Good Storage Options
Mostly well built...

Cons: Some odd design choices
Only 1 SSD tray.
Flimsy panel latches.
Not really all that small....

Other Thoughts: This case looks amazing. Truly it's the best looking computer I've ever built, and everyone who sees mine loves it. A lot of people think it comes from some big fruit company that shall not be named. The only thing that can ruin the view is the pony tail of cables that come off the rear of the top of the case. That can be managed, but forget about having the case pressed flat up against a wall. Silverstone knows however that you're going to proudly display the FT03 for all to see. Otherwise, they wouldn't have put the optical drive slot on the bottom of the case.

One thing to keep in mind, is that this system is much bigger than it looks...

The interior design is well thought out. There is room for 3 hard drives and one SSD, two massive video cards, an ATX PSU, and even a 120mm water cooling set up or a giant tower style heatsink. The one catch about the system is that it requires a slim, slot load, optical drive. These run twice the price of a traditional drive and half the speed. I don't mind it so much as optical drives are rarely used in this day and age of APP stores, but it can be a pain.

Perhaps the two best design ideas Silverstone had was the fact that you can replaced the 120mm intake bottom fan with two 80mm fans instead, and the inclusion of one (or two depending on model) "hot swap" drive bays. I place them in quotation because they're not truly hot swap as you have to remove the side panel to get the drives out. Nevertheless they are nice to have.

Inside I have a i5-2500K at 4.5GHZ, Asus V Gene mATX mainboard, two 5870's in Crossfire, SSD, and 2TB WD Black. I used a Silverstone Strider 850 Gold PSU, and I cooled the CPU with a Thermalright Venomous X tower cooler with two 1300 RPM quite fans in a push pull. Because the 5870s are such long cards, I removed the stock 120mm intake fan, and replaced it two 80mm Nexus fans which provide plenty of air, and are close to silent.

So why only 3 eggs?

First off, the panels on the side of the case are difficult to secure, and easily pop off. They aren't held in place anything other than gravity and willpower. I have yet to move this case without them coming off. Moreover, there are panel gaps between the front and side panels that are obvious.

Second, the fan grill at the bottom of the case is absolutely useless. I actually don't even bother with it. I can't get it to reliable stay on, and cuts the intake airflow in half.

Third, there is no cooling for the hard drives. One of the drives has an aluminum block on it, but it fails to touch.

Fourth, you must use a short cable kit for your PSU which costs $50!

Fifth, you can't place this system on the floor and expect to easily get to the optical drive. It's meant to be up on display.

Finally the USB 3 top ports are merely connected to your mainboards rear panel. Cheap...

If you can live with the short comings, this is a great, beautiful case. I only wish a little more attention to detail had been place

8 out of 8 people found this review helpful. Did you? Yes No

  • Norman R.
  • 7/17/2013 9:29:52 AM
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsSo Pleased

Pros: This case is fantastic. Lots more space than you realize when you buy it----the 4 hard-drive bays are a good space to hide the wiring and there is a ton of space for a full-size psu. I guess this is the newest version, because it didn't come with the blue-usb-3 pass-through cables, but a black usb-3 cable to attach to a motherboard. Very cool indeed

Cons: none

Other Thoughts: The overall build quality is great and the thoughtful design is great. BUY THIS!!!

Did you find this review helpful? Yes No

  • Jason N.
  • 6/26/2013 5:16:00 AM
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsGreat case

Pros: Size, I was worried but this case fits my MSI 7970 and Corsair H80i quite nicely. Sides are easily removable so all areas are accessible; case is a pleasure to work on. The aluminum body panels are a decent gauge and do not flex. The unusual motherboard mounting is brilliant and other manufacturers should take note. The cooling properties of this box are rivaled only by its siblings in Silverstone's Fortress line.

Cons: The only two issues I have are minor and not worth deducting an egg. The first is the placement of the power button; it's on the top of the case and is quite easy to push inadvertently while reaching over the top to fiddle with cables. The other issue is QC in the packing department. Case was meant to come with a specific set of screws, standoffs, and fasteners; it came instead, with a random bag of mismatched screws and no MB standoffs at all. Luckily, I've accumulated a rather large collection of these items over the years so it was not a problem for me but if one does not have standoffs handy, it may be a troublesome build.

Other Thoughts: So far, I am VERY happy with this case and would choose it again without question.

2 out of 2 people found this review helpful. Did you? Yes No

  • 4/4/2013 6:29:05 PM
  • Ownership: 1 week to 1 month

5 out of 5 eggsMy new favorite Mini-Itx Case!

Pros: - Very well made case, especially the aluminum side panels.
- Small footprint for a tower based computer.
- Can fit a radiator on the bottom of the case (see cons).
- Can potentially fit the "smaller" full-size ATX Psus.
- Well thought-out interior design that allows maximum airflow.

Cons: I have two complaints:

1) The aluminum side panels are very sturdy and heavy. The problem is with the little push-pins that hold them on the side of the chassis. The pins are only plastic, and if they break, you won't be able to keep your side paneling on. Not worth docking an egg, but just be aware and careful if you are transporting this case around.

2) The case can fit a radiator! Wait, why is this a con? Well, the only way to cool any of your computer parts is through the pre-installed 140mm Air Penetrator fan that sucks air from the area by the case feet and pushes it up through your components and out the vents at the top. This wouldn't be a big deal except that if you mount your power supply with the fan facing inwards towards the motherboard (like the case is designed for it to be), you now have your power supply's fan and your CPU heatsink's fan competing for cool air, as they are pretty much directly on top of each other.

This means you are almost forced to use a CPU cooler (in my case I used the Corsair h55 low profile with a 120mm radiator) and installed it right in front of the AP fan. The fan is definitely powerful enough to cool both the rad and the rest of your components, but I do not believe you will be able to get decent cooling for your CPU if you only use a regular fan and heatsink. I could be wrong, but I'll let you cram this SFF case full of parts and then tell me your thoughts :) (Not docking an egg since its an opinion).

Other Thoughts: I bought this case from another online store because I was able to get free 2 day shipping, but it is the same case nonetheless and I prefer to shop Newegg for most of my computer needs so I think it will be of more avail for users here than on other websites.

Great case, great layout, small footprint, VERY clean look! I love Silverstone build quality.

0 out of 2 people found this review helpful. Did you? Yes No

  • Joyce S.
  • 4/4/2013 2:22:15 PM
  • Ownership: 1 month to 1 year
  • Verified Owner

4 out of 5 eggsWow.

Pros: Small, sweet, and compact
Nice airflow design
Does what it's supposed to

Cons: Cabling issues as others have mentioned - tight fit, but it works.
An odd issue I'm discovering with mine is that the natural vibration of the case, coupled with the shifted motherboard angle, causes PCI-e power cables to wiggle out slightly - until they lose their connection, causing an instant crash. After three months of ownership, I've began reseating the PCI-e power cables every day out of paranoia. May only be an issue with the 680FTW+ though.

Also, the Noctua NH-D14 cooler is slightly too large to fit with the angled mid-fan - however, its own cooling fans serve the same draw purpose, so it's a minor con.

Other Thoughts: It's a really beautiful case, but I may be purchasing a replacement from a competitor due to the unseating issue. I'll be getting replacement cables from Silverstone for the ST1000-P first to make sure it's not a cable issue.

Did you find this review helpful? Yes No

  • Brian P.
  • 4/1/2013 12:19:13 PM
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsgreat case

Pros: small size yet no limitations when it comes to vid card, cpu heatsink, PSU options. hot swap hard drive bay is nice too. cable routing is easy. very solid construction. you can break down the case to an almost bare frame, making building much easier.

Cons: i wish it had more room for intake fans. the slim dvd drive is kinda' a b****. sold separately :(
you will run into problems if you want a pci wifi card with protruding antennas. the top grill can get in the way. the antennas can be arranged to poke through the top plastic grill.

Other Thoughts: This is a great case if you are looking for a mATX build with a small footprint. I have spent a ton of money experimenting with pc builds over the last 10 years. if you want air-cooled, small footprint, and mATX motherboard or smaller, this is a great case.
i would give it 4.5 out of 5, but it's either 4 or 5 on newegg. the case is better than a 4.

Did you find this review helpful? Yes No

  • Hung T.
  • 3/31/2013 4:54:28 PM
  • Ownership: 1 day to 1 week
  • Verified Owner

5 out of 5 eggsSilverstone FT03

Pros: SFF performance case
Fits performance CPU cooler like the Cooler Master V8
Fits high end video card and ram
Stack cooling
Three 120mm fans
Roomy interior for micro-atx or itx gaming setup
Tool-less exterior
Sleek design
Bottom dust filter is magnetic, sticks to the bottom of the case, very cool!
Room for 2 additional 80mm fans and one 80/90mm fan to cool the video card.

Cons: No cooling for hard drives
Only one 2.5" SSD bay, was not happy with this at all but I got creative with different ways to attach both of the 2.5" SSD so I won't deduct an egg.
Holes to loop wires to the motherboard could be bigger
I have a Raidmax 850 Modular PSU, it fits fine except the wires may be too long and needed some creative wiring work to jam everything in.

Other Thoughts: Case fits everything I needed nicely. Fits the Asus Maximus V Micro-ATX motherboard very well. I also have an Intel i7 2600K with a Cooler Master V8 in there, and it fits! But I had to remove the 120mm fan angled at the CPU to make it fit. So I got the Cooler Master 212 EVO and changed the fan to have it pull air upwards, and everything worked out peachy! I also have an MSI 7950 Boost Edition in there, fit just fine with room to spare. I had an Asus Xonar Essence STX audio card in there too but it was sitting too close to the front of the video card which made the case run a little warm. Took out the audio card and used the on board XFi audio. Along with using Virtu MVP on the board, running Crysis 3 at ultra setting kept the card at 32C, motherboard at 29C and CPU at 32C.
I plan to get two 80mm and have it blow up from the bottom to see how it differs from one 120mm blowing up at an angle.
Love the case so far, runs extremely quiet when not gaming. When gaming it's mostly the video card that howls.
Also, girlfriend thinks it's a recycle bin.

Did you find this review helpful? Yes No

4 out of 5 eggsVery nice case

Pros: Typical Silverstone quality. Relatively small, although bigger than I had expected. Plenty of room inside for large CPU coolers, graphics cards, etc. Only space for 3 hard drives + an SSD, but who really needs more than that?

Cons: A little tight for cabling, but not too bad. Some of the cable openings from the rear compartment into the motherboard side could have been a little larger, but given that it's a Micro ATX case, they're sufficient. Necessity to use a sot loading optical drive adds expense.

Other Thoughts: It's not shown or listed in any photos or specs, but the case no longer uses the USB 3.0 loop cables that plug into external motherboard ports - it now comes with the standard USB 3.0 motherboard header connector.

1 out of 1 people found this review helpful. Did you? Yes No

  • Chad H.
  • 1/21/2013 5:17:34 PM
  • Ownership: more than 1 year

4 out of 5 eggsVery Good Case with caveats.

Pros: Beautiful quality construction and design style. Smallish footprint on the floor or desktop. Solid steel framework (which dispenses heat very effectively). Thick aluminum side panels for quality.

Utilizes the fact that "heat rises" and pulls cool air in from the bottom for the PSU and GPU. Also uses another lower side panel to cool the CPU. Wonderful and simple airflow.

Brilliant design overall.

Cons: The side panel screen is plastic framed and easily washable as is the bottom screen. The side works well because it locks in with a little push. The bottom relies on magnets to stay still and fit flat.

If you have a bottom filter that does NOT fit flat or falls out if you bump the case. Call for a new one. They will get you a better version that works perfectly.

Other cons are the fit and finish. Mostly the case is perfect, but some fit and finish problems remain. The exterior aluminum panels do not always align perfectly. The plastic grilled top and the plastic filtered side intake cheapen the look of a beautiful case.

Sad that Silverstone did not try to make these areas more classy somehow. Otherwise this is the most fantastic and wonderful case offered yet to builders IMO.

Did you find this review helpful? Yes No

  • Seth D.
  • 1/20/2013 1:53:51 PM
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsSome Important Information

Pros: - Small Footprint
- Good build Quality
- Everything Fit... almost (See Other Thoughts)

Cons: The power supply Measurements are off a bit... The largest Power Supply it can fit (According to the manual) is the Silverstone ST1200 Power Supply. I bought A 1200W Power and Cooler for it and it was just 3/8in to long with cables secured. So I followed their recommendation instead.

Other Thoughts: Here are some helpful notes from the manual and myself:
- Adapters for displays will require a cabled version not a stub version as provided with most video cards.
- Largest power supply supported is the Silverstone ST1200
- When using a tower cooler you may loose the 120mm case fan that would sit below you CPU, also you will loose the ability to mount in the 80mm sulimental fan for your graphics card
- So long as it will not interfear with your PCIe Slot you can fit in a 140mm tower cooler
- Fanless tower coolers can support up to 130W TDP (not overclocked)
- top down coolers are doable but will require a specific mounting direction
- When using long video cards 10in plus you will need to get two 80mm Fans for the bottom
- Longest card suppported 13.77in
- Graphics cards are best if they are external venting only
- the regular HDD mounts do not support a 2.5in to 3.5in SSD adapter
- Hot swap slot is designed for HDDs no thicker or thinner than 25.4mm

There now you are armed with better information than I had...

1 out of 2 people found this review helpful. Did you? Yes No

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Item#: 9SIA0AJ3T02804
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