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NZXT Guardian 921 RB No Power Supply ATX Mid Tower Case.

4.1 4.1 out of 5 stars 82 ratings
Currently unavailable.
We don't know when or if this item will be back in stock.
Black and Red
Brand NZXT
Motherboard Compatability ATX
Case Type Mid Tower
Color Black and Red
Material Steel Plastic
Power Supply Mounting Type Bottom Mount
Cooling Method Air
Fan Size 140 Millimeters
Item Weight 8.2 Kilograms
Number of Expansion Slots 7

About this item

  • 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
  • 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
  • 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
  • Constant Temperature Monitoring: Three temperature probe monitoring system allows the user to constantly gauge thermals within the system at all times to prevent overheating
  • Silent Cooling: Comes standard with 3 120mm fans installed to maximize cooling performance with minimal noise
  • Case Type: ATX Mid Tower, SECC Steel
  • M/B Type: ATX, MicroATX, Baby AT

Top Brand: NZXT

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NZXT Guardian 921 RB No Power Supply ATX Mid Tower Case.

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Product Description

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. Building off of the original Guardian's success, the Guardian 921RB features a robust set of features for the budget conscious PC Gamer. Designed with a futuristic and sleek curves, the Guardian 921RB is the perfect chassis to show off your gaming chassis.

Customer reviews

4.1 out of 5 stars
4.1 out of 5
82 global ratings

Customers say

Customers like the quality, ease of assembly, appearance and cooling of the computer chassis. They mention that it's well designed, easy to handle wiring and that it looks great. Opinions are mixed on brightness, performance, sturdiness, and size.

AI-generated from the text of customer reviews

36 customers mention33 positive3 negative

Customers are satisfied with the quality of the computer chassis. They mention that it is well designed, well built, and has adequate space. Some say that the case is a tower and that the motherboard is great.

"Beautiful case, I have received many complements and it is very low key...." Read more

"...Ugh. But anyways. Great price and great case. Perfect for all the techies who don't want/need a crazy case but still want a flashy one." Read more

"Really good body. It is a lot bigger than I expected and far heavier. However, it is made of steel, so it makes sense...." Read more

"...This case is decent, but doesn't give you much room at all for cable management. All in all I'd say it's not worth the $70 price tag." Read more

21 customers mention19 positive2 negative

Customers are satisfied with the appearance of the computer chassis. They mention that it has a great looking, sexy design, and flashy features. They also appreciate the screwless design for drive bays.

"...in all a good case for the price, has nice lights to it and is catchy to the eye...." Read more

"Pros:- The NZXT Guardian case looks very nice once you have everything setup.- Interior room is reasonable for a mid sized case.-..." Read more

"...In the end this case looks really amazing and I'm proud to own it, even though it did give me some heck getting her ready...." Read more

"...I was drawn by the attractive design, but I've also come to love ALL the features...." Read more

16 customers mention13 positive3 negative

Customers like the cooling system of the computer chassis. They mention that it has a great cooling system, the triple temperature guage is very useful, and the case fans that come included run really cold. They appreciate the three temperature readouts on the front panel, which show the CPU, HDD, and ambient temperature. They also mention that the case has an extra fan slot for more cooling.

"...It has three temperature readouts on the front panel, which show the CPU, HDD, and ambient temperature, great for monitoring everything...." Read more

"...The temp sensors are fairly accurate (although not 100%, I compared them to the temps on CPUID HWMonitor)...." Read more

"...The triple temperature guage is very useful. The cooling system is great and I could never get the CPU above 72 degrees centigrade, 20 degrees..." Read more

"...Don't get me wrong, it's a wonderful case with plenty of fans, and the drive bays are superb, but I should have gone a bit cheaper with the build...." Read more

12 customers mention9 positive3 negative

Customers find the computer chassis easy to assemble. They mention that the back makes things very quick to install. They also say that the case is spacious and easy to thread the cabling through the system. Customers also mention that everything went in nicely and that the unboxing was easy.

"...It has clip for the hard drive slots so you can slide them in easily, and the 5 1/2" slots for dvd drive slide in and have a locking clip to hold..." Read more

"...Very spacious and very easy to thread the cabling through the system.Very great air flow quality...." Read more

"...Cheap plastic. The directions are messy and hard to understand. Some of the wires that the case comes with are just sitting in the case...." Read more

"...as well as for PCI card slots on the back -- this made things very quick to install.Cons:-..." Read more

22 customers mention13 positive9 negative

Customers are mixed about the size of the computer chassis. Some mention it's very roomy, holds almost all motherboard sizes, and is perfect for any gamer. However, others say that it'd be better if it had more room for cable management.

"...The case itself is study, kind of heavy but that's no big deal. Quite large as well to hold all those frustrating wires in a more safe, comfortable..." Read more

"Really good body. It is a lot bigger than I expected and far heavier. However, it is made of steel, so it makes sense...." Read more

"...It has enough room for everything. The power connector for my GPU seemed to be close to the side fan and that worried me a little...." Read more

"...Plenty of room inside, my Hyper Evo 212 cooler and GTX 750 TI fit pretty easily...." Read more

21 customers mention12 positive9 negative

Customers are mixed about the brightness of the computer chassis. Some mention that the LEDs are beautifully lit, and it looks amazing at night. However, others say that the fan LEDs don't light up as bright as the example.

"...The led's are bright enough to add character but not so bright that they will keep you up at night if you like to leave your computer on...." Read more

"...The first time I set it up, the LED on the front didn't light up. After some wiggling of the connections it came on, though...." Read more

"...This baby now has 4 fans in it. (Red LED ones of course.) Silent, bright and beautiful, really looks amazing at night...." Read more

"...The front fan under the door does not even light up and the window is actually tinted to the point where I had to buy a led rope just to get some..." Read more

13 customers mention7 positive6 negative

Customers are mixed about the performance of the computer chassis. Some mention that it looks good, works well, and gets the job done well. The fans work well and are very quiet. However, some customers say that the light never functions, they have trouble with their cpu cooler, and the fans they supply are very weak.

"not bad smaller then i expected but it gets the job done well and the fact it tells you the temp inside of your rig is nice...." Read more

"...about was the side case is clear, but they attach such a large/low powered fan that it covers basically the whole side view so nothing in the case..." Read more

"...The position of the "front" ports is very functional. The fans work well, and are very quiet...." Read more

"...it difficult to close the case lid, and making the case lid fan almost completely unusable...." Read more

11 customers mention6 positive5 negative

Customers are mixed about the sturdiness of the computer chassis. Some mention it's very sturdy and made with heavy gauge steel, while others say that it'll break easily, is flimsy, and made of cheap plastic. Some customers also say that the directions are messy and hard to understand.

"...The case is made well heavy enough gauge steel. I like the way the pci cards clips in to hold them in place to get a screw in them...." Read more

"...but the inside slot thingy you lift to put in the GFX Card is also flimsy, didn't break, but it looks bad and is just an eyesore. Cheap plastic...." Read more

"...It is a lot bigger than I expected and far heavier. However, it is made of steel, so it makes sense...." Read more

"...as the fans they supply are very weak, though they are quiet, they are weak...." Read more

BEST CASE EVER Update: STILL THE BEST CASE EVER!!!!!!! since like, umm... idk, like a few years ago, maby a year.
5 Stars
BEST CASE EVER Update: STILL THE BEST CASE EVER!!!!!!! since like, umm... idk, like a few years ago, maby a year.
this case is very good for a budget gaming case, i got a. msi 990 fxa gaming motherboard with an amd 9590FX possessor and it all fits perfectly, after a few days the front LED burned out and i would like to know where to get a replacement bulb, or the voltage it takes so i can buy one.Update January 25 2017: it has been a while and i still love this case. after a while of having this case i have found a few little things that might help overall. some people might think that the case is making the fans sound loud or irritating, that may be the case :) for some, but not many. all you need to do, is buy some sewing kit lube and put a drop or two in the fan, it worked for me, sometimes there is just a little dust in it. as for the front panel LED, well, i must say, it was a roller coaster full of hell. it was their fault for sticking crappy led in the front, but mine for doing a bad soldering job in the begging, which i found out when i was actually going too replace it again XD. Anyway... for the front LED, you should buy a "Christmas Holiday Light-Up Christmas Bulb Pen (12 per order)" (i am pretty sure you can just buy one of them, at like 5 below, i was just giving you a reference pic.) which was originally a GAG gift until i tore it apart for the led, i think it is actually brighter than the led in the nzxt case, its is pretty simple from there, if you have a screw driver and a soldering thingy(lol for got the name, i wanna say... gun?). lastly, i would like to add that you can put the corsair h80i v2 water cooler in this case. you just need to have one of the fans on the outside of the case. you also need a dremel to cut little slots for the door to fit back on over the little parts of the fan, which i have done a horrible job of, but i got it back on :). and lastly lastly, i have provided a few pictures of my case to this day, and i must say over the years of developing this pc, it has at least 1300$ spent into it :D, it would have been 1032 dollars if i just listened to the recommended bull before. any way, i hope you enjoy your case.
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Top reviews from the United States

Brent Hunter
5.0 out of 5 stars Awesome looking case
Reviewed in the United States on September 17, 2013
Color: Black and RedVerified Purchase
Beautiful case, I have received many complements and it is very low key. I enjoy the bottom mounting PSU bracket, the plastic drive locks and the wire management holes. There are hardly any wires showing when you look in my case. The led's are bright enough to add character but not so bright that they will keep you up at night if you like to leave your computer on. I attached my thermal probes to my heatsink block, the bottom of my HDD and one on my GPU heatsink. They are accurate within +/- 5 C. Regardless of that seemingly large range I am easily able to glance at my led display on the front of the case and assess my running temps. My only complaint is that there are no USB 3.0 ports built into the case. Great case, great price, great company.
One person found this helpful
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James P.
5.0 out of 5 stars Great case
Reviewed in the United States on April 3, 2011
Color: Black and RedVerified Purchase
I ordered this case cause all the stuff i bought wouldn't fit into my old case. The case is made well heavy enough gauge steel. I like the way the pci cards clips in to hold them in place to get a screw in them. It has clip for the hard drive slots so you can slide them in easily, and the 5 1/2" slots for dvd drive slide in and have a locking clip to hold them in place with no screws.
The case has a intake fan mounted in front of the hard drive to keep them cool. The psu mounts in the bottom of the case. The motherboard mounting hole lined right up and had two that had shoulders on them to help hold the motherboard in place. The fans in the case have white blades with red led lights i just replaced the with clear blades from cool master just look nicer.There is a spot for a fan in top of the case for an additional fan that you'll have to purchase and its a 120 mm fan or 140 mm. The case is well worth the money!
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James P.
5.0 out of 5 stars Great case
Reviewed in the United States on April 3, 2011
I ordered this case cause all the stuff i bought wouldn't fit into my old case. The case is made well heavy enough gauge steel. I like the way the pci cards clips in to hold them in place to get a screw in them. It has clip for the hard drive slots so you can slide them in easily, and the 5 1/2" slots for dvd drive slide in and have a locking clip to hold them in place with no screws.
The case has a intake fan mounted in front of the hard drive to keep them cool. The psu mounts in the bottom of the case. The motherboard mounting hole lined right up and had two that had shoulders on them to help hold the motherboard in place. The fans in the case have white blades with red led lights i just replaced the with clear blades from cool master just look nicer.There is a spot for a fan in top of the case for an additional fan that you'll have to purchase and its a 120 mm fan or 140 mm. The case is well worth the money!
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9 people found this helpful
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Jacob
4.0 out of 5 stars Great Case. Couple minor issues that may have just been my wrong doing.
Reviewed in the United States on July 11, 2014
Color: Black and RedVerified Purchase
I do love this case. With the size and affordability along with the flashy features. Quite beautiful. This was an upgrade from my single fan small tower. This baby now has 4 fans in it. (Red LED ones of course.) Silent, bright and beautiful, really looks amazing at night. The only reason I am giving it 4/5 is a couple of reason.

The case itself is study, kind of heavy but that's no big deal. Quite large as well to hold all those frustrating wires in a more safe, comfortable less crowded space. However, the back pieces, such as the little slots you push out when installing a GFX Card, are very....very flimsy. I stepped on one, broke easy. No big deal but it bugged me. Also, it may have me being stubborn, but the inside slot thingy you lift to put in the GFX Card is also flimsy, didn't break, but it looks bad and is just an eyesore. Cheap plastic. The directions are messy and hard to understand. Some of the wires that the case comes with are just sitting in the case. They look like...little wires with a yellow paper material on them, no clue what they are. Ugh. But anyways. Great price and great case. Perfect for all the techies who don't want/need a crazy case but still want a flashy one.
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Steven Shinofield
5.0 out of 5 stars Big, Bad Beast
Reviewed in the United States on August 6, 2014
Color: Black and RedVerified Purchase
Really good body. It is a lot bigger than I expected and far heavier. However, it is made of steel, so it makes sense. It looks truly amazing all lit up, and the fans are so silent. It has three temperature readouts on the front panel, which show the CPU, HDD, and ambient temperature, great for monitoring everything. Make sure everything is connected right. The first time I set it up, the LED on the front didn't light up. After some wiggling of the connections it came on, though. Just make sure everything is tight.
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CactusKiller
1.0 out of 5 stars What a hunk of crap! Wire management is a nightmare and you can't ...
Reviewed in the United States on January 5, 2018
Color: Black and RedVerified Purchase
What a hunk of crap! Wire management is a nightmare and you can't trust the digital temps at all. So glad I threw this thing in the trash and Bought a Phanteks Eclipse P400!
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Joshua Minix
2.0 out of 5 stars Looks Better In Pic
Reviewed in the United States on April 14, 2016
Color: Black and RedVerified Purchase
So, I bought this case in 2012 for my first build. When it arrived the temp probes did not all work (only 1 of 3 actually did) so I decided to just not use the top display at all. The front fan under the door does not even light up and the window is actually tinted to the point where I had to buy a led rope just to get some kind of lighting to shine through. I contacted NZXT and they never replied or even attempted to fix my problem with the probes. This case is decent, but doesn't give you much room at all for cable management. All in all I'd say it's not worth the $70 price tag.
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Heather
5.0 out of 5 stars Looks good, works good
Reviewed in the United States on October 27, 2015
Verified Purchase
This came on time as scheduled. It is a good case. This is my first PC build so I wasn't sure what kind of space I would need and this worked out just fine. It has enough room for everything. The power connector for my GPU seemed to be close to the side fan and that worried me a little. I had to do some adjusting to get the cable to where I felt it wouldn't hit the fan. The picture shows blue but the color is red for this one. I'll be honest I thought I ordered the blue one so I was surprised when all was said and done and it turned on with red lights. I am okay with this I like the red better anyways. :)
3 people found this helpful
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Top reviews from other countries

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Cliente de Amazon
5.0 out of 5 stars Lo volvería a comprar :)
Reviewed in Mexico on December 31, 2016
Color: Black and RedVerified Purchase
Excelente. Mucho espacio y tres ventiladores incluidos (dos con led). Cuenta con espacio para instalar unidad óptica (ya pocos gabinete NZXT lo traen). Muy recomendable.
Lo malo es que el envío fue con AMZMX
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Riki Martin
5.0 out of 5 stars Five Stars
Reviewed in the United Kingdom on September 3, 2015
Color: Black and RedVerified Purchase
Small and sexy!
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Fernando vkz
2.0 out of 5 stars Poco espacio para Gaming avanzado
Reviewed in Mexico on April 27, 2017
Color: Black and RedVerified Purchase
La verdad , el gabinete esta hermoso en su diseño muy moderno , esos espacios para los dvds se agradecen , pero me quedo muy chico , sobre todo quien mas lo sufrio fue mi tarjeta de video , lo recomiendo para gaming de gama baja o media.
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