Antec 300 Three Hundred Ultimate Gaming Case - Black [0761345-08300-3]

Reviewed by: Douglas Aird (Kirkcaldy, Fife)

I chose this case for my first-ever PC build and I made a great choice. Side panels and front panel come off easily giving great access to the interior. Front fan installation is easy thanks to the "cages" for the fans being hinged and detachable. Cable management is good, there is a space behind the back panel with plenty of room for spare cables (I also found room to have a "molex" cable in there so I could attach the two front fans I fitted plus the top fan and keep those cables well out of the way of the main body of the case). Pre-fitted fans work well, although they are a little noisy on the fastest setting (I have them set to the middle setting). There's plenty of room for a full ATX motherboard and all but the biggest of graphics cards. Package comes with plenty of ordinary screws and thumbscrews. I have no hesitation in recommening this case.

Reviewed by: Aodhan (Northern Ireland)

Great case, plenty of room for my rig, but my biggest problem, and only problem, is the cable management in the case. I'd recommend a modular PSU to help with management.

Reviewed by: Murray (Jersey)

I bought this case to build my youngest son a computer. His two older brothers both had the 900 case and I reckon this is far better value for money. I fitted a Q8400 and a 4890 into this case and the temps are really good on air cooling with an Arctic Cooling pro 7. Cable management is superb and better than the 900 or 902 cases - you just have to put in a little effort to tidy it up properly.

Reviewed by: Daniel (Dorset)

I've owned this case for over a year now, i switched to it from a Thermaltake Tsunami case when my PSU died.

The Tsunami case had all the no tools plastic brackets, clips and frills that just got on my nerves (and broke) after two years.
The Antec was a breath of fresh air, proper screws and metal plates, clean and solid design, plenty of ventilation (buy some extra fans).

Flaws i've come up against.
Pick the right PSU, mine wouldn't fit properly because of a u-shaped metal plate riveted to the bottom of the case, i had to hammer it flat first.
Cable management is a bit poor, get a modular PSU if you can.
If you want a 2 GFX system, get a bigger case, my 4870 is fine in it, 2 would not be IMHO.
The dust filter on the front clogs quickly, clean it at least once a month.
Buy a rubber film if putting on a wood surface to reduce noise from plastic feet.

Overall i found this better than the case i had before, suitable for 95% of PC builds, easily recommended for the price.

Reviewed by: David Costello (London)

This has to be by far the best case I've ever owned, and I've owned quite a few.

If you want a clean and simple, easy fitting, well-built case, then I would definately say BUY THIS.

It has lots of ventalation, 2 supplied 12cm fans with room for others. The build of the one I have is excelent, and expansion cards align perfectly with the fitted motherboard.

I have mine housing a WindowsXP AMD Athlon64 X2 5000+/Gigabyte motherboard machine with onboard graphics used for a media server, and the thing is almost silent using the standard AMD stock cooler. There's never once been an overheating issue either and the box has got an average up-time of 74 days.

I'm very happy with this case and so long as it remains in production I'll be buying more for future builds, and recommending it to friends when they need a case.

Reviewed by: J (London)

It managed to fit my HD4890 with loads of free space for airflow, which was my main worry. The case is very sturdy and well built, my temperatures have definitely dropped and I have no problem with the fans even when on full speed.

Reviewed by: George Waller (Wezza)

I think this is a brilliant case for the money and i think the fans are fine tbh. The ony gripe is the insde colour and cable mangement. I wish I got one sooner and brill case!

Reviewed by: Jay ( )

Looks good, feels solid, I love it

However I will be replacing the fans.. I like a quiet PC, and even with the two fans it comes with on the lowest settings it is not at all quiet... but for the price, the rest of the case makes up for it!

Reviewed by: Peter (Edinburgh)

Excellent case, though cable management is a bit tricky. Keeps things very cool with the 2 case fans + an extra fan at the front.

Reviewed by: Faisal (London)

Bought for my new build- overclocked phenom 965 to 4.4ghz at 49 degrees full load with help of corsair h60 cpu cooler and mx5 paste! great case, cool in both ways. do not spend money on useless £500 cases. This is the one!!!!

Reviewed by: Ast3r (London)

I bought together with 2 Akasa fans for my little brothers's new gaming PC and and it keeps he's E8400 @3.6 Ghz at 32*idle and 2xHD4830 @ 46*idle.Great case worth every penny.

Reviewed by: Tim (North East)

This case is excellent, there are no sharp edges or stupid clips. Antec supply you with a bag of thumbscrews for your drives.
The case is a solid construction, plenty of room for hard drives which means you can move them around for better cooling (My HDD sits in front of the front fan bay, which will have a fan in it soon)
The front easily hinges off and the front fan fitment is a doddle to get to. Its got space for my HD4890 graphics card and then some, its a solid case and with the fans turned right down it keeps my gear nice and cool at almost inaudible noise levels.

The HDD and power lights are very small, which i like. They're subtle but noticeable. Case looks smart, its a no messing looking case with no stupid light shows, i know some of you like that but after the first couple of days they just annoy me.

For the money, this case is an absolute steal.

To sum it up
Its a cut the crap no frills case, just a well made chassis with good cooling and well thought out layout.

Reviewed by: Muel (North Derbyshire)

I love this case, it's well made, the air flow is good, it looks brilliant so top marks there.

Only downside is the cable management, It needs holes cutting out of the motherboard tray, and even then the space between the tray and the outer panel is really tight. If it was 5mm more space and had holes in it ready for cable management, it would get 5.

Reviewed by: Kieran (Arundel)

This case is superb and well equipped considering the modest price. After getting an Antec P182 case last year I embarked on setting up a home server. Armed with all the components I would need I installed them in an old ATX case.

This case was not good enough and I needed more drive space and heat was also an issue. That meant 120mm fans were needed. I originally looked at the Antec Three Hundred as my gaming case but felt it was not big enough for my needs. Once a new server case was required my first port of call was the Antec. Armed with 2 large Tri-cool fans and 6 hard drive bays this was the case for my new server. I have also added two intake fans to the front to keep a nice air flow through the case. My hard drive temps dropped 10°c moving to this case and it is also nearly silent with the fans on low.


If your looking for a case that's cheap, well equipped with good build quality then this is the case for you.

Reviewed by: Jonathan (Belfast)

Grate case for the money. 3 speed fan controller for roof and back fan both create great airflow. Lost one start for cable management. Case is a nightmare to work with and watch for large graphics cards, you won't be able to get a HDD directly opposite a large GFX card

Reviewed by: Madnoss (Blackburn)

I bought this case for the first system a have eve built.

Its a good looking case and as a first time builder I found it very easy to work with, loads of space etc.

I think its great I was impressed by its looks, it appears really classy and looks and feels quallity.

My system runs very cool. With a Q8200 clocked to 2.7GH (Small overclock I know) idles at 22 degrees C, full load 38 degrees C.

I fitted a Scythe 120mm exhaust and moved the 120mm exhaust which came with it to one of the intake bays. and it not that loud (i'm a bit deaf anyway and kind of like my PC to sound like a spitfire lol)

For the money I dont think you can do better highly recommended!!! I love it!!!!

Reviewed by: Andrew (Guernsey)

This case is great, I've fitted 3x Scythe Kaze Jyuni fan's in it and it cools my i7 and dual 4850's well.

However, the fans which come with it drown out all the other's, even at medium settings. The case is also quite hard to work with when doing cable management.

Reviewed by: Russ (London)

I bought this case to house one of OCUK's 3.8ghz i7 bundles.

This case is more than capable of keeping such a high overclock cool. Runs at 42 idle and hovers around 68 on load. I'm sure these temps would go down slightly if I added in some more fans but it is stable as it is and i don't want any more noise.

I wish that the fan in the top was 120mm not 140mm as as of yet there are no quieter replacements on the market. I have to set both the case fans to "medium" to get decent cooling.

Overall a decent case for the money but best of all it isn't covered in tacky lights and windows.

Reviewed by: Dave (Leeds)

Used this case on a recent build and I was amazed! Plenty of room inside too work with, there is a little sectioned put aside for cable management and with two 120mm blue LED fans in the front - It looks great!
Only negative is on full fan speed, it sounds like a tornado, but its cool enough on low/med setting.

Great case - wont beat for price and great service OCUK!!!

Reviewed by: Kuba (Cambridge)

These is monster cooler for that price. But very noisy and vibrant, so poor acoustics. Lack of mobo tray holes for cable management, flimsy plastic front frame. Beside that it serves me around 3 years and its a budget cooler you can afford.

Reviewed by: Dean (Essex)

Overall I am very pleased with the Antec 300, it feels well made, looks nice and the price is excellent.

Few issues, the big one is the PSU, although I am sold on the bottom of the case position my PSU 12v lead didn't easily reach the m'board 12v connector - it's strected across the RAM and close to the CPU heatsink so I'm concerned about the heat damaging the wire. My PSU is a year or two old so maybe newer ones have less issues but if your 12v m'board connector is in the top left you may need to plug in before installing your heatsink.

No removable HDD/optical drive holders like the Sonata I previously owned - if you swap drives a lot then I'd recommend a more expensive case but not an issue for me.

The big case fans are nice and quiet but the 3-speed controls just hang off a 4 inch or so wire, not really sure what to do with it, shame it didn't connect to a backplate.

Really like the matt black finish and overall would recommend this to those looking for a bargain case.

Reviewed by: Chris (Wales)

Great value for money, looks good, has great cooling capabilities with the 3 optional 120mm fan spaces, the 2 that come with the case are great and almost slient.

Reviewed by: Philip (London)

build quality of the case is awesome for the price! looks uber sexy too!
Ventilation = brilliant 2x 120mm optional fans, side panel optional 120mm fan, 140mm top exhaust fan (included), 120mm back exhaust fan (included).
practically silent when on low, but loud on full speed

would definately recommend this case if you want a sleek cool looking case for everyday use

Reviewed by: Dedex (London)

This is a really good case. I changed my coolermaster case for this baby, and have not looked back. Much better case, and the fan on the GPU area is very needed if you have 2 GTX8800 running. In the old case they caused the south bridge to get really hot, to about 75 degrees, because there was not enough air close to the GPU's. changed the case and with this one the Temkp is only around 42 degrees during hard gaming.
Very good build quality and nice cable management area. would buy this again if i need another case in future.

Reviewed by: Ben (Chester)

Pretty solid budget case.
You wont regret buying it but theres very little in the way of cable management and more fans help the temps alot.

Reviewed by: Dan Inglis (stoke on trent)

amzing case for the price for the you wont regret it.

BUY IT

P.S buy more fans.

Reviewed by: ajs

I bought this to replace a Seasonic Silentium case that had served well but needed a bigger power supply. There's plenty of room, my GTX260 fits easily and the whole thing is near enough silent.

I also have an Antec P180 but the 300 is much better value and I've since bought a 2nd 300 to replace a no-name case.

Good positioning of the front usb and sound sockets.

Easily recomended

Reviewed by: hypno toad

this is an awesome case . really spacious comes good for cable management with the cable console on the side . nice 3 speed fans with possibility to add 1 on the side and 2 HDD fans on the front. Easy to open the side and front. HDA/ac97 connections and usb on the front. I would recoment getting an atx12v 4pin extension as my lead didnt reach. psu sits on the bottom.

Reviewed by: Peter Oram

Bought this case as I was building a new gaming pc. It looks great. with the two case fans 120 and 140 there is a lot of air flow. the GTX 260 fitted well in the case. I modded the case by cutting holes on the back so i could keep the cables out of sight better.

Corsair HX 1000W ATX Modular Power Supply

AMD Phenom II X4 Quad Core 810 2.6GHz (Socket AM3)

XFX GeForce GTX 260

Gigabyte GA-MA770-UD3 AMD 770 (Socket AM3/AM2+)

Corsair XMS2 8GB (4x2GB) DDR2 PC2-8500C5

Reviewed by: Kevin Jones

This case is brilliant!

Plenty of room for a 4870x2 (10.5") and enough to put another one in as well! Though you would need some good cooling due to tight space.

For the price, you just cannot go wrong :D

Reviewed by: David Trace

Great case, good cooling with the two fans included. Both of these fans come with a adjustable switch, low, medium and hig. Only downside to this case is the power supply is mounted at the bottom, and some power supplys motherboard connector wont reach, like mine. I had to go out and purhase an extension, but overall a good case.

Reviewed by: Jazzler

All I can say is WOW.. What an amazing case.. Not all gamers want cases that look like aliens, but we still need to keep our components cool, that's why this case is so good. Its discreet, well designed and well built, while staying ultra cool.

My cpu was idling around 49c in my old case with cpu fan @100%, replaced it with this case and now its idling at 37c with the cpu fan @50% and the case fans on lowest setting.

Reviewed by: Vascoe

Very nice case. Couple of downsides, everything is screwed in, no removable hd bay or mobo tray or anything handy like that. PSU also goes in at the bottom, some like this idea but the problem is the motherboard dosent expect it to be there, the power connections for the mobo were quite a stretch.

but thats why its £50 and not £80. I would say its the best in price range, its sturdy, excellent build quality, great cooling (180mm extractor fan on the top), looks pretty slick and has usb and headphone jacks at the TOP of the case, where they should be. Also has a dust filter behind the front panel.

The flaws it has are minor and they dissapear once the build is complete, once its up and running its all good from there.

You won't do better for £50. If you want to overclock, this case is perfect for it.

Reviewed by: Liam Parrish

I bought this as part of the now removed Antec 550 Basiq PSU and Antec 300 Case. This case comes with 2 fans pre-installed which are very quiet on the lowest of their 3 settings. The case and powersupply also come with removable cable ties and the case has many cable routing points around it.

Unlike my old case, the front panel comes of with very little hassle when you want to remove it and is firmly attached clipped on.

The Case also has a box inside containing roughly 20 thumb screws, plus the 4 holding the panels on and the 4 holding the 2 front fan cages.

Fantastic design, couldn't be happier!

Reviewed by: Paul Henshall

Got this the other day from OC,
I read it was a good case, and was not dissapointed, i got 2x12cm fans for the front too, to increase air flow.
Easyest case to build from scratch i have come accross so far, 2x 8800gt's fin inside no prob's
full atx board, great options for cable management, quick release drives, and a great exhaust fan on top, phew.
the picture here doe'nt do the case justice, it looks even better up close.
I will deffo be buying an Antec 300 again. 5*****

Reviewed by: Rumface

An amazing case for the price. Had mine nearly half a year now but still going strong.

The only minor thing I'd have to say is bad is that this case is a Midi case still, theres no escaping it. I've got 2 9800GTX+'s in SLI and they fill it almost completely, it covers some of the sata connectors.

For the cost it cools and fits amazingly well. It looks great too. It's not all showy like some cases, it's front lights are great looking without looking pretentious.

You'll be telling your friends what magic your little Antec 300 PC can do ;).

Reviewed by: Stephen

This case is amazing, ive had the Antec 900 before this one and i can say now done bother spending the extra £37 for 2 LED fans,

when you can fit 3 LED fans on this for £30 the cable management is much better as is the fittings for the HDD and DVD drives,
you get the extra dustfilters which come in hand and can be taken off and washed very easily.

A* Product !!! with a Great Price

Reviewed by: Tim Robson

I was shocked by how great this case is for the money. Sure the materials used may not be designed to dampen the sound of a Boeing 747 and it doesn't shoot lasers out of the fan exhausts, but what it does do it store all of your components and cables in a very accessible manner. I've not used a case previously that is such a reasonable size but has so much room within. It deserves 5 stars simply for the fact you can insert hard drives through the front of the case, removing then need to unplug everything just to slide another drive in.

Reviewed by: Christy Lakeman

Had this case for a day now and so far it seems really good. I opted to buy three extra fans for it as it comes with three optional fan slots. It is running very cool. Cable management is good- it looks great, cant really fault it.

Reviewed by: Tom

These case is awesome, I fitted to LED fans to the front one to the side and the airflow is just IMMENSE.

The fans it comes with are adjustable, they are practically silent when turned down but when turned up they can be a bit noisey but offer awesome cooling.

It looks great under my desk too!

Why pay more for a case when this offers great performance and looks?

Reviewed by: Balaal

got this a few weeks ago as part of a new system. fitted with a p5q mobo no problem. has spaces for two fans at the front and one at the side, but tbh you dont really need to get it, my system runs around 20c with just the two exhaust fans.

lots of space so tidy up the cables. great

Reviewed by: Chris

Got one of these for my new pc build great build quality, looks great, good cable management. It also very spacious for the size of case i have fitted two 4850 graphics cards in crossfire no problems.

Reviewed by: Wayne

A Pro Case For Budget Money! Keeps The PC Cool With 2 Silent Fans! Looks Great Too, Well Worth The Money!

Reviewed by: JonnyBase

Simply the best quality case for build/cooling performance and low cost.

Get yourself three good quality 120mm fans for the intakes and side panel and your laughing.

Reviewed by: John G

Bought two of these at the weekend, one for my desktop and one for my server. Absolutely brilliant cases, same old Antec solid build quality.

Cooling is perfect thanks to the fan positioning and theres loads of room to pack it with drives - yet its not a big bulky case like some.

For this price you must be mad not to buy one! :)

Reviewed by: Swanny

I recently purchases this case to sit quietly in a cupboard for a server machine. I was so impressed with how quiet it was, and how well built it is I decided to replace my old skool Overclockers Coolercase Tornado case from my main rig! Superb value in my opinion, and very subtle in design. Very impressed!

Reviewed by: Dr Bill Allen

I recently rehoused my quad core extreme pc from a Coolermaster Mystique 631 to an Antec 300 (a cheaper case), and it's made a huge difference. The airflow in the Antec is MUCH better and, even with two fans pushing air in, my computer runs quieter and cooler - the Antec represents very good value for money.

Reviewed by: Mark P

This is the best case in it's price range, it's slick looks and great air flow make it one of the best cases i've ever owned.

Just to mention what size gfx cards this takes i've got a 3870X2 sitting in it, it's a bit tight but as long as you don't try to stick a hard drive in a bay direcrtly opposite there's no problems.

Reviewed by: Steffan Rodgers

Wow great case never knew how big 120mm fans were till now but delivery is amazing from overclockers i got it next day and i live on and island in Scotland so amazing delivery and sweet cooling and so easy to install more fans.

Reviewed by: Robert Watts

Purchased this recently for my new PC build based on an Intel Core 2 Quad Q6600 (2.4GHz) - in short, I'm blown away at the build quality and ease of use when working with this.

Unlike most other case makers, Antec fitted all of the ports and buttons at the top to the case itself (not the plastic front panel!), and provide 3 quick-release clips for removal, making installing hard drives and CD drives a doddle. And there's no risk of all the buttons falling off when the front is removed!

The detatchable hard drive fan grills are also a great feature to have, ensuring no wasted time spent trying to shoehorn fans directly into cramped case fronts!

Also, there's no sharp edges anywhere inside, good spacing for the hard drives once fitted, excellent ventilations. While none of the drive mountings are tool free, enough thumbscrews are provided for 6 hard drives, and in any case tool-free mountings shouldn't be expected at this price point!