Review Index:

Thermaltake Suppressor F31 Silent Mid-Tower Case

Manufacturer: Thermaltake

Introduction and Features


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There has been growing interest in recent years in quiet computing with more users looking for components that will help them build a quiet PC. Thermaltake’s new Suppressor F31 Silent ATX mid-tower chassis is aimed squarely at this audience. Thermaltake has been around since 1999 and is a well-respected name in the PC industry. They offer a full line of cases, power supplies, cooling components, and accessories.

The Suppressor F31 chassis is available with or without a side window and comes in black. Thermaltake also offers several other variations in the Suppressor line, which include the Suppressor F31 Power Cover Edition (large baffle located over the PSU area) and the Suppressor F51 Mid-Tower case (slightly larger chassis capable of mounting an Extended-ATX form factor motherboard). We will be taking a detailed look at the Suppressor F31 Window ATX Mid-Tower Chassis in this review.

The Thermaltake Suppressor F31 is wider than most mid-tower enclosures (250mm/9.8”) and incorporates sound dampening panels on the front, top and both sides. Note: the Window version replaces the left side panel sound dampening material with a large acrylic window. The top panel has three separate sound dampening panels that can easily be removed to make room for additional case fans or a top mounted liquid cooling radiator. The Suppressor F31 comes with two quiet case fans installed: one 120mm intake on the front and one 120mm exhaust on the back.

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The roomy chassis offers numerous options for adding more case fans (up to nine total) for increased airflow as well as several options for installing liquid cooling systems of various sizes (single, dual, and/or triple fan/radiators). All of the potential fan locations are designed to mount either 120mm or 140mm fans. The front panel can mount one 200mm fan and the top panel can mount two 200mm fans if desired.

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(Courtesy of Thermaltake)

Suppressor F31 Window ATX Mid-Tower Case Key Features:
•    Mid-Tower ATX enclosure (HxWxD, 497x250x515mm, 19.5x9.8x20.3”)
•    Large clear acrylic side window (also available without a side window)
•    Supports ATX, Micro-ATX and Mini-ITX motherboards (F51 supports E-ATX)
•    Extremely quiet case for noise sensitive applications
•    Sound dampening panels on front, side, and top
•    Easily removed dust filters on front, top and bottom panels
•    Two included Thermaltake fans (120mm intake and 120mm exhaust)
•    Numerous cooling options for adding fans and/or liquid cooling
•    (2) USB 3.0, (2) USB 2.0 and HD audio jacks on the top I/O panel
•    Three internal 3.5” hard drive / 2.5” SSD trays
•    Three optional 3.5”/2.5” drive mounting locations behind mobo tray
•    Two external 5.25” drive bays
•    Tool-free mounting for all 3.5” internal and 5.25” external drives
•    Up to 278mm (10.9”) clearance for graphic cards
•    Up to 420mm (16.5”) for long graphic cards (with HDD cage removed)
•    Up to 180mm (7.1”) of space for tall CPU coolers
•    Price: $99.99 USD

Please continue reading our Suppressor F31 case review!!!

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The large side window gives a clear view inside the case to show off all your high-end hardware. Alternately the Suppressor F31 can be purchased without a side window, which provides one additional fan mounting location for a total of nine.

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Adding a 120mm or 140mm intake fan to the left side panel can provide great airflow into (or out of) the GPU area!

March 14, 2016 | 08:34 AM - Posted by remc86007

Is it just me, or does this look nearly identical to the Fractal Design Define R5?

March 14, 2016 | 09:36 AM - Posted by Anonymous (not verified)

There was a whole scandal earlier in the year where thermal take was accused of stealing the design. Not sure where it was left of, but I have to agree their exteriors are very similar.

March 14, 2016 | 10:56 AM - Posted by anuk

Also there is a model similar to caselabs aluminum cases. Personally I can't complain, I love fractal design cases, I love the define s, but they don't have resellers in this part of the world and otherwise thermaltake yes. so at last here we can find something similar.

btw, only 3 HDD slots? really thermaltake?..rly?

March 14, 2016 | 12:28 PM - Posted by Anonymous (not verified)

ppthfft! NZXT S340 is WAY ahead of this and it's an older case. If you're using a motherboard that has M.2 and use a 2.5 inch SSHDs, why would you need more than one 3.5 HDD bay for? Unless you like loading games on a slow SATA mechanical drive. This is DESKTOP case. Why would you being building a SERVER farm using something like this?

March 15, 2016 | 12:26 PM - Posted by Captain Obvious (not verified)

Slow SATA mechanical drive???? Harddrives are still very relevant and useful. Using them for backups and media libraries is a common use case, therefore more than 3 slots would be preferable for a case in this price range.

March 14, 2016 | 11:28 AM - Posted by Anonymous (not verified)

They are making a VR headset powered BY an FX8800P(35W) APU, PCPer please review it when/if it becomes available!

March 14, 2016 | 12:17 PM - Posted by DJF (not verified)

Question, it says it supports USB 3.0, does this include USB 3.1 or is the wiring/connector different?

March 14, 2016 | 01:10 PM - Posted by Anonymous (not verified)

Go to part 3(A Detailed Look from the Outside) of the review it's Type-A hardware so having any USB Type-C form factor/electrical standard plugs will have to come from the motherboard maker and be run out the back, or maybe some other user modded way. I'm sure that there is probably a way for some modding to get some Type-C connectivity to the front/top of the case as long if the motherboard comes with a USB 3.1 controller chip built into the chipset, or on motherboard.

Remember the Type-C plug is not tied into getting any USB 3.1 speeds as the USB Type-C Gen 1 is for the USB Type-C plug paired with a USB 3.0 controller chip, and the USB Type-C Gen 2 is the Type-C plug paired with a USB 3.1 controller chip. It's also going to be up to the motherboard maker just what USB Type-C electrical ability the USB Type-C port supports as that will come from the motherboard OEM also, So go to the USB-IF website and see just what parts of the USB Type-C plug's electrial standard that the motherboard OEMs have the option of supporting, so that will be up to the Motherboard's OEM.

I'd would like to get thunderbolt 3 supported motherboard as even that will be delivered through USB Type-C form factor plug with the TB3 wires added to the USB Type-C receptical in addition to the other standard USB wires. There are even going to be USB Type-C plugs that have display port wires also! So the USB Type-C plug standard supports the TB3, and DP additions/extentions to the USB Type-C plug wiring standard, in adition to the USB Type-C's electrical power delivery standard.

March 14, 2016 | 01:27 PM - Posted by DJF (not verified)

Great answer! Thanks.

March 14, 2016 | 03:14 PM - Posted by Dr_Orgo

Nice review Lee.

This case is Thermaltake unashamedly copying the Fractal Design Define R5 as close as possible without getting sued. I don't like that, and will avoid Thermaltake for my next build. I do understand that incorporating the best parts of competitors cases is how the market works, but Thermaltake should have tried a bit harder to differentiate their case from the Define R5.

March 14, 2016 | 05:08 PM - Posted by Anonymous (not verified)

How do you know that both Thermaltake and Fractal Design do not get their parts supplied by the same subcontractor! Just look at laptop cases! And PC cases are mostly rectangular boxes. So the case's sub-parts(Grommits, fan shrouds, standoffs) as well as sheetmatal stamped parts, plastic parts, and such may just come from other suppliers that supply the entire case making industry!

August 6, 2016 | 06:16 PM - Posted by Anonymous (not verified)

I'm building a new pc and looking at the cases on the market has me deciding on a few different cases.

Corsair 400C 450D
Phanteks Enthoo Pro M
Fractal Define R5 and Define S

I ended up with Thermaltake F31 Why?
- All of the things I didn't like about the Fractal cases are not present here
- can mount 3.5 and 2.5 on the same racks behind motherboard, can use still use 5.25 bays for dual SSD mounting also.
Supports more sizes of Fans and radiators on the top, front and bottom,
- Top mounted magnetic dust filter
- bigger side panel window
front side intakes are dust filtered.

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