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Item#: N82E16811146050

NZXT Guardian 921 CS-NT-GD921-B Black Steel ATX Mid Tower Computer Case

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  • Steel ATX Mid Tower
  • USB / 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

NZXT, a company built on realizing the dreams of gamers worldwide, is proud to announce the Guardian 921, a gaming chassis in the NZXT Crafted Series. Building off of the original Guardian's success, the Guardian 921 features a robust set of features for the budget conscious PC Gamer. Designed with futuristic and sleek curves, the Guardian 921 is the perfect chassis to show off your gaming rig.

  • newegg Constant Temperature Monitoring The NZXT Guardian 921 features a three temperature probe monitoring system so you can constantly gauge and check the temperatures in the chassis to prevent any overheating or damage to the system.
  • newegg Spacious Interior and Solid Construction Built from solid 0.8mm and 1.0mm steel, the NZXT Guardian 921 provides ample space to fit large high end video cards and up to four internal hard drives.
  • newegg NZXT Crafted Series Design As a new addition to the Crafted Series, the NZXT Guardian 921 offers gamers sleek aesthetics with elegant curves, blue LED lights and a newly designed clear side panel.
  • newegg Cooling with Low Noise The NZXT Guardian 921 comes standard with all the fans installed maximizing cooling with low noise.
  • newegg Easily Upgrade to Liquid Cooling The NZXT Guardian 921 features dual rear retaining holes for easy installation of liquid cooling systems.
  • newegg Multimedia and Peripheral Inputs Side-mounted E-SATA, Intel HD audio, Mic and two USB inputs are standard with the NZXT Guardian 921 for maximum peripheral input.

Learn more about the NZXT CS-NT-GD921-B

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 CS-NT-GD921-B

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  • Joseph T.
  • 8/20/2013 8:21:43 PM
  • Ownership: more than 1 year

3 out of 5 eggsWouldn't get it again...

Pros: -Cool lighting and default fans are cool
- Able to open front door...swap out harddrives(if you mount where DVD drive goes.

Cons: -No cable management at all. There is space between the Back of teh mobo and the door. Absolutely Horrid and literally have to Squeeze to close
- mounting aftermarket cooler is a PAIN. For some reason the top mounts to mount my hyper 212 almost didn't fit on the above mounts in the back. I have to squeeze it in barely.

Other Thoughts: Go with the HAF case from coolermaster you will be MUCH happier.

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  • Jack B.
  • 6/8/2013 7:21:58 AM
  • Ownership: more than 1 year
  • Verified Owner

3 out of 5 eggsDecent case, but it's not the best.

Pros: Decent internal space.

Cons: -No cable management.
-Poor build quality.
-Lights are dying after only 4 years.

Other Thoughts: Having had this case for 4 years now, in hindsight I realize that it's not the best idea to go with a computer with lights and flashy things on the front cover, as its just a sign of tacky cheapness. The lights are starting to flicker and die now, which isn't acceptable for LED's that are only 4 years old. Its got a decent amount of room, but no cable management.

If I were you, I'd say to go with a different computer case that focuses less on flashy, gimmicky looks, and more on quality and usefulness.

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  • Shane L.
  • 8/20/2012 9:05:35 AM
  • Ownership: more than 1 year
  • Verified Owner

5 out of 5 eggsWorked fine

Pros: I decided to change cases after about 2 years of using this case because I wanted a bigger one with more fans(Antec 1200). If I didnt need to overclock I would have stuck with this case, it looks great.

Cons: None

Manufacturer Response:

We want to thank you for being a customer of NZXT and we appreciate you taking the time to send your feedback and will continue to strive to make our products better.

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  • Benjamin P.
  • 7/15/2012 11:14:34 AM
  • Ownership: more than 1 year
  • Verified Owner

3 out of 5 eggs

Pros: Large, Spacious, Cool

Cons: Loud, Not particularly good looking

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  • Anonymous
  • 9/13/2010 3:03:46 PM
  • Ownership: more than 1 year
  • Verified Owner


Pros: First off, it was shipped in about 4 days, which is still fine with me. Also, there were no dents or bends with it at all. I love the all black and blue color scheme. The front LED display looks amazing as well. I like the space inside as well, good airflow.

Cons: None at all.

Other Thoughts: Newegg = Great Customer Service As Always! Shipping was great and most importantly, I was very satisfied(that's what she said, lol)

NZXT Guardian 921
EVGA 730a Motherboard
AMD 9850 2.5GHz
Corsair H70 Watercooler
Corsair 400Watt Power Supply
Western Digital 320GB Raptor Series
Corsair 4GB(2x2GB) DDR2 800Mhz
Using onboard graphics 256MB Nvidia Geforce 8500

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  • Amanda W.
  • 9/8/2010 11:43:40 AM
  • Ownership: less than 1 day
  • Verified Owner

4 out of 5 eggsFirst build; great case! ^__^

Pros: This was the third computer I've assembled, but the first I've actually designed and built myself--so this was the first case I had a choice in buying!
Overall, it seems like a great case. Despite complaints from a few people, there was more than enough room to fit everything, and though the case doesn't have any built-in cord management, there's plenty of room to get things set up on your own.

Overall, it looks great, and it lights up beautifully too!

Cons: I had some issues with the side panel being jammed when I first got the case--despite watching numerous reviews were it slid out and came right off, mine took a good hour or so of work to get unjammed. However, since then it's come on and off several times normally.

As others have mentioned, the fans aren't extremely powerful, and may need to be replaced sooner or later, but for now they work well enough for me.

Other Thoughts: Among the 400 manuals miscellaneous manuals I've acquired since starting this project, Nzxt's was quite possible the worst. Don't bother looking to it for any real issues with the case, or for explanation (or even mention) of the temperature sensors at all.

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  • Enrique A.
  • 9/2/2010 2:00:55 PM
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsBest case I have ever owned!!!

Pros: Everything!!!
Spacious design, sexy look, 3 fans, and support for virtually anything (even an HD 5970!). Space is never a problem with this case, temperatures are low, and a sexy look! What else can you ask for?

Cons: Not really a con, but wire management could be better.

Other Thoughts: I love this case! Can fit my two crossfired HD 5770'S, a Crosshair IV Formula motherboard, and a whole water cooling system, and more!

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

  • Michael F.
  • 8/6/2010 9:59:55 PM
  • Ownership: 1 day to 1 week
  • Verified Owner

4 out of 5 eggsGreat case but beware

Pros: Great looks, great function & great price.

Cons: I bought a Scythe SCMG-2100 Sleeve CPU Cooler and the side case won't fit. The fan the comes on the side panel hits the cpu cooler. So just beware this CPU cooler and case do not work together.

I also couldn't figure out how to hookup the temp gauge. The instruction manual sucks.

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  • Ali H.
  • 8/5/2010 3:30:39 PM
  • Ownership: 1 day to 1 week
  • Verified Owner

5 out of 5 eggs

Pros: A real computer gamer case nothing can fails about this case for me.

Cons: Do not put the CPU Temp Sensor between the Heat sink and CPU you will burn it out. I have done it and waiting for a replacement.

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4 out of 5 eggsSolid case with some drawbacks

Pros: Great design. Easy to install hardware, nice drive bays, cd-rom install. Screwless case designs usually end up with wobbly drives but not in this case.

Cons: Side mounted USB ports died after a few weeks of regular use. Have to leave the big door open if you have a drive that will just pop open after burning a disc

Other Thoughts: The door could use a lock or a latch to keep from opening. It's awkward shape in the front means you should probably put it back in its box if you have to take it anywhere, which is a good idea as it does scratch easy. For the price this is a great case. A lot of manufacturers seem to forget that the inside is still important when the outside looks nice, and this case has a good mix of that.

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