Skip to: | - A great place to buy computers, computer parts, electronics, software, accessories, and DVDs online. With great prices, fast shipping, and top-rated customer service - once you know, you Newegg.

If you are reading this message, Please click this link to reload this page.(Do not use your browser's "Refresh" button). Please email us if you're running the latest version of your browser and you still see this message. - Computer Parts, Laptops, Electronics, HDTVs, Digital Cameras and More!

Sign up today for a 30-day free trial of Newegg Premier
  • Shipping Destination: United States
  • Wish List
  • Feedback
  • Help
Search all
Home > 
Computer Hardware > 
Computer Cases > 
Computer Cases > 
Item#: N82E16811146050

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

  • Steel ATX Mid Tower
  • USB / Audio / e-SATA Front Ports
  • 3 External 5.25" Drive Bays
  • 4 Internal 3.5" Drive Bays
ICON Loading...

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


Guardian 921


ATX Mid Tower
Case Material
With Power Supply
Power Supply Mounted
Motherboard Compatibility
With Side Panel Window


External 5.25" Drive Bays
External 3.5" Drive Bays
Internal 3.5" Drive Bays
Expansion Slots
With front LCD display
Temperature Monitoring

Front Ports

Front Ports
USB / Audio / e-SATA

Cooling System

120mm Fans
1 x 120mm Blue LED front fan
1 x 120mm rear fan
1 x 120mm Blue LED side fan

Physical Spec

20.5" x 8.1" x 18"
18.1 lbs.


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 standards with the guardian 921 allowing for maximum peripheral input.

Silent Cooling: Comes standard with 3 120mm fans installed to maximize cooling performance with minimal noise.

Manufacturer Warranty

1 year limited
1 year limited

Quick Info


  • Limited Warranty period (parts): 2 years
  • Limited Warranty period (labor): 2 years

Customer Reviews of the NZXT CS-NT-GD921-B

Do you own this product? Write a Review

ICON Loading...

Filter Results

  • Joseph T.
  • 8/20/2013 8:21:43 PM
  • Tech Level: Somewhat High
  • 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.

Did you find this review helpful? Yes No

  • Jack B.
  • 6/8/2013 7:21:58 AM
  • Tech Level: Average
  • 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.

Did you find this review helpful? Yes No

  • Shane L.
  • 8/20/2012 9:05:35 AM
  • Tech Level: High
  • 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.

Did you find this review helpful? Yes No

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

3 out of 5 eggs

Pros: Large, Spacious, Cool

Cons: Loud, Not particularly good looking

Did you find this review helpful? Yes No

  • Anonymous
  • 9/13/2010 3:03:46 PM
  • Tech Level: High
  • 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

Did you find this review helpful? Yes No

  • Amanda W.
  • 9/8/2010 11:43:40 AM
  • Tech Level: Somewhat High
  • 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.

Did you find this review helpful? Yes No

  • Enrique A.
  • 9/2/2010 2:00:55 PM
  • Tech Level: Somewhat High
  • 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
  • Tech Level: Somewhat High
  • 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.

Did you find this review helpful? Yes No

  • Ali H.
  • 8/5/2010 3:30:39 PM
  • Tech Level: Average
  • 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.

Did you find this review helpful? Yes No

  • Anthony P.
  • 7/23/2010 11:15:57 AM
  • Tech Level: High
  • Ownership: more than 1 year

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.

Did you find this review helpful? Yes No

ICON Loading...
Are you an E-Blast Insider? Subscribe Newegg e-Blast
Shop without retyping payment details. Secure shopping made faster.
Check out with PayPal.

Home > 
Computer Hardware > 
Computer Cases > 
Computer Cases > 
Item#: N82E16811146050
Related Products
Steel/Plastic ATX Mid Tower 4 x USB 2.0 ...
The Smilodon case from Raidmax makes assembling a ...
Model Brand NZXT Series Guardian 921 RB Model ...
DIYPC Black & Green SECC Steel ATX or ...
Shop by Region: United States | Canada | China
VeriSign Click for the BBB Business Review of this Computers - Supplies & Parts in Whittier CAThis site protected by Trustwave's Trusted Commerce program Inc500
Policy & Agreement | Privacy Policy  © 2000-2014 Newegg Inc.  All rights reserved.
If the Adobe Reader does not appear when you click on a link for a PDF file, you can download Adobe Reader from the Adobe web site. nassau