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Item#: N82E16811146070

NZXT Crafted Series 921RB-001-BL Black SECC Steel / ABS Plastic ATX Mid Tower Computer Case

  • SECC Steel / ABS Plastic ATX Mid Tower
  • USB 2.0 / Audio / e-SATA Front Ports
  • 3 External 5.25" Drive Bays
  • 4 Internal 3.5" Drive Bays

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  • Overview
  • Specifications
  • Warranty & Returns
  • Reviews


Tempest 210

Black Steel Mid Tower

NZXT celebrates the rebirth of the Guardian 921 with the renewed Guardian 921 RB. Expanded upon its predecessor, Guardian 921 RB reflects the gamer design, structural integrity, and temperature monitoring system of the original while displaying a wide range of new features to complete the system builder's dream budget case. New features include a bottom-oriented power supply mount, CPU heatsink cutout, and an extra 140mm fan slot. Game beyond your limits with the Guardian 921 RB.

Tempest 210


  • NZXT Crafted Series Design: NZXT's latest addition to the Crafted Series takes cues from gaming culture with elegant curves and a newly designed clear side panel
  • Spacious Interior and Solid Construction: Built from solid .88mm and 1.00mm steel, the Guardian 921 gives the user ample space for large, high-end video cards and space for up to four internal hard drives
  • Constant Temperature Monitoring: Three temperature probe monitoring system allows the user to constantly gauge thermals within the system at all times to prevent overheating
  • Multimedia and peripheral inputs: E-SATA, Intel HD audio, mic, and two USB inputs are standard with the Guardian 921 allowing for maximum peripheral input
  • Silent Cooling: Comes standard with three 120mm fans installed to maximize cooling performance with minimal noise
  • Updated Design: The all new Guardian 921 RB features a bottom-mounted PSU, CPU heatsink cutout, and an extra slot for a 140mm fan at the top for more cooling performance. The all new Guardian 921 RB comes in both red/blue LED combinations

Tech Specs

Size Mid Tower
Model Number 921RB-001-BL Blue LED
Drive Bays 3 EXTERNAL 5.25" DRIVE BAYS
Cooling System FRONT, 1 X 120 mm LED FAN [Included]
REAR, 1 X 120 mm FAN [Included]
SIDE PANEL, 1 X 120 mm LED FAN [Included]
TOP, 1 x 120/140mm
Clearance CPU COOLER CLEARANCE 144.4mm (with fan) 169.4mm (without fan)
Dimensions 206mm(W) X 459mm(H) X 522mm(D)
Material SECC Steel, ABS Plastic
Motherboard Support ATX, MICRO-ATX, BABY AT
Expansion Slots 7
External Electronics 1 x Audio/Mic, 2 x USB 2.0, eSATA, Temperature Display
Product Weight 8.2 kg
Warranty 2 years

What's in the Box

Tempest 210


Learn more about the NZXT 921RB-001-BL

Warranty, Returns, And Additional Information
  • Warranty
  • Limited Warranty period (parts): 2 years
  • Limited Warranty period (labor): 2 years
  • Read full details

Customer Reviews of the NZXT 921RB-001-BL

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  • Anonymous
  • 4/23/2016 4:10:46 PM
  • Ownership: 1 week to 1 month
  • Verified Owner

3 out of 5 eggsGREAT

Pros: amazing looking case
loved the LED lights and it pretty spacious

Cons: was a bit of a tight fit for the graphics card

Other Thoughts: i would definitely recommend this oproduct to others but the cable management is a bit tough. i keep one of the sides open due to my graphics card taking up the space and i would rather not have it squeezing all the materials together.

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  • David O.
  • 4/15/2016 4:54:13 PM
  • Ownership: 1 week to 1 month
  • Verified Owner

2 out of 5 eggsExpected more from NZXT

Pros: Decent fans/airflow design. Very sturdy construction. Nice to look at.

Cons: Where to begin...first off, the standoff points are mislabeled for full ATX boards. The manual shows mounting an SSD in the top bay, but a standard SSD does not align with the mounting, and no adapter is provided...hello NZXT it's 2016...why no SSD mount?
And the probes for the temperature instructions AT ALL, a google search for the one for the CPU gets you answers like mount the probe between the CPU and the heatsink....yeah, no thanks. Almost no room for a high end graphics card. My Asus GTX 970 just barely fit with about 2mm room to spare before the card would touch the back of the mounting bays. Unless you are going to use a low to mid range graphics card, you're likely to run in to trouble.

Other Thoughts: Really disappointed in this case, guess my next build will be with a Corsair case. I would stay away from this case, it looks pretty, but look are deceiving.

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  • Jason W.
  • 3/8/2016 11:48:42 AM
  • Ownership: 1 day to 1 week
  • Verified Owner

4 out of 5 eggsNice case for the price. Some issues but not a Deal Breaker

Pros: CD Drive Door so you can hide you drives.
Nice soft Blue LED lights to give it a clean amount of light.
Comes with everything you need to install your PC
The temperature sensors are a nice touch

Cons: I had to remove the 2 3.5" drive bays in order to install my XFX Radeon R9 280x graphics card. There isn't enough room in the case to install without removing the bays.
The temperature display is not very bright. I am in a lit room without sun light but I am unable to see the temps unless I look at it head on an closely. If you can make these brighter or with a dimmer switch that would be great. Also it is lacking instructions on how to mount the temp sensors as well as a good location.

Other Thoughts: I would recommend this product to others if they fix the issues with the temps being brighter. I would put screws in to mount the 3.5" bays instead of rivets so if someone needs to remove them to install a graphics card they can without having to drill out the rivets. I am sure I voided the warranty by doing that but I needed my card to fit.

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  • Reggie S.
  • 1/31/2016 7:26:27 PM
  • Ownership: 1 month to 1 year
  • Verified Owner

4 out of 5 eggsNice looking case

Pros: Cool Design.
Lights and translucent side makes it easy to see the inside of your pc.
Magnet door on front of case is fairly durable.
Displayed CPU HDD and SYS temperatures make for easy monitoring of temp on pc.
Temps can be displayed in Fahrenheit or Celsius.

Cons: Tabs on the hard drive slots on back of pc break off easily.
Case is fairly small for a mid size tower.

Other Thoughts: Would recommend for a smaller build, can be frustrating to fit decent parts.

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  • Steven R.
  • 1/29/2016 8:27:44 AM
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsGreat Case! Looks Cool!

Pros: I like where the front peripheral connectors are located. This case is a nice mid tower case. The airflow is great. I built this rig for a boy for christmas and he loved it and all his friends are jealous! It was pretty easy getting everything set up in this case!

Cons: I am not a fan of the Temperature gauges, they give false errors now and then. It could throw someone off who is a newb if not told about them. The standoffs for the motherboard were cheap and striped a little on install and I am gentle.

Other Thoughts: Yes, if you want a cool looking case that is nice quality for the price buy it. I would use this case again.

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  • Jeremiah H.
  • 12/27/2015 11:18:45 PM
  • Ownership: more than 1 year
  • Verified Owner

5 out of 5 eggsWonderful case

Pros: Love this case the lights are fun but not overkill.
The temperature gauges are a nice touch.
Used this for a friends build and all the fans and devices are still going strong 2+ years.

Cons: Like with all cases beware sharp edges happens to me every time ill go to grab it to flip it on its side and it cuts me.

Other Thoughts: Not to big but plenty of room would recommend to anyone who wants a smallish gaming tower!

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  • Anonymous
  • 12/11/2015 12:08:57 PM
  • Ownership: more than 1 year
  • Verified Owner

4 out of 5 eggsSome problems but good

Pros: Fits all my hardware and still looks clean and well kept.

Cons: To clean the case both sides have to be removed to get the fan unplugged. Then the side for the cable management is a pain to put back on due to not wanting to fit over my power cable.

Other Thoughts: it's a nice case I'm happy with it and have upgraded my hardware a lot since I got it back in 2014. I just wish the cable management was better.

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  • Anonymous
  • 12/7/2015 11:25:00 AM
  • Ownership: more than 1 year
  • Verified Owner

5 out of 5 eggsGREAT CASE

Pros: LEDS are really cool!
pretty slim so it doesn't take up too much space.
great for a starter case in my opinion
lots of places to put fans and lots of space for your parts

Cons: no cons

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  • Anonymous
  • 12/1/2015 9:51:20 PM
  • Ownership: 1 month to 1 year

5 out of 5 eggsGreat case!

Pros: This case is great! 2 r9 380s fit in there just fine, everything was easy to install and not confusing at all.

Cons: Was difficult to fit the cables on the side label behind motherboard, but I got most of them, still an amazing and sexy case. It also wasn't as bright inside as I hoped but LED strips are dirt cheap.

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  • Adrian M.
  • 11/25/2015 5:57:34 AM
  • Ownership: 1 week to 1 month
  • Verified Owner

4 out of 5 eggsDecent

Pros: front LED temp readings for CPU, HDD & System; 2x120mm fans included, visible door

Cons: not enough clearance for my GTX 970 strix in PCI E 3.0 slot (only fits in 2.0 slot) - minus one egg for not stating this in specs/details

Other Thoughts: If you have a video card over 11", consider another case. Otherwise, I have no complaints.

I use this for my plex media server (it was intended for my gaming rig but see my statement in cons, so I replaced an old Ultra case that was about 6 years old) with the following:

Asus P5QL-Pro
Intel q8200
Asus nVidia GT 610
Mushkin "Chronos" 60GB SSD
osx 10.10.5
5GB OCZ DDR2 1066
Antec 450w (waiting for Black Friday to get PSU, as 450w is not enough)

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

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