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Crucial RealSSD C300

Crucial RealSSD C300
alaScore 91

931 reviews

Feb, 2018

alaTest has collected and analyzed 931 reviews of Crucial RealSSD C300. The average rating for this product is 4.4/5, compared to an average rating of 4.5/5 for other Solid-state drive for all reviews.

We analyzed user and expert ratings, product age and more factors. Compared to other Solid-state drive the Crucial RealSSD C300 is awarded an overall alaScore™ of 91/100 = Excellent quality.

Review analysis

(Based on 931 reviews)

Expert Reviews  

User Reviews  


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Consumer review by: ( review summary for Crucial RealSSD C300


alaTest has collected and analyzed 156 user reviews of Crucial RealSSD C300 from The average user rating for this product is 4.2/5, compared to an average user rating of 4.5/5 for other Solid-state drive on

84% of the reviews on give this product a positive rating.

This summary is based on the products: Crucial Technology 128 GB Crucial RealSSD C300 Series Solid State Drive CTFDDAC128MAG-1G1Crucial Technology 128 GB Crucial RealSSD C300 Series Solid State Drive CTFDDAC128MAG-1G1

Feb, 2018

Expert review by: (

Crucial 128GB RealSSD C300 2.5 review


The Crucial 128GB C300 SSD is the first we've seen to use the new SATA III interface, which is increasingly found on the newest motherboards. We tested it both over SATA III as well as the older, more widespread SATA II.

The C300 is an incredibly fast SSD, but it's also expensive.

Aug, 2010


Expert review by: Andrew Harrison (

Crucial RealSSD C300 review


Crucial's RealSSD C300 stands out from almost every other SSD currently available by its use of a super-fast SATA 6Gbps interface bus.

Even without a modern SATA 6Gbps bus-equipped PC, the Crucial RealSSD C300 would be our first choice for a performance SSD at this capacity. Not only does it take on the attention-grabbing sequential read-write tests with dashing aplomb, it also...

Jul, 2010

Expert review by: MyCE (

Crucial RealSSD C300 128GB SSD Review (11)


Silky smooth operation as a system drive and completely stable., Outstanding reading performance., Outstanding 4K random I/O performance, SATA 6Gbps support, Excellent multitasking potential., TRIM support under Windows 7 (SATA 3Gbps), Lightning fast...

Apparently no TRIM support in SATA 6Gbps mode.

Let us summarise the most important positive and negative points below: The Crucial RealSSD C300 128GB SSD has the fastest reading speeds from a single drive we have ever tested here on 4K random IOP performance is phenomenal and small file...

Jan, 2013

Expert review by: XtremeComputing (

Crucial 128GB RealSSD C300 2.5" with Data Transfer Kit


Consistently quick, Reasonably priced (compared to other high-performers on the marketplace), Good firmware support, Small, Good online community, 3 year warranty, Meets Crucials high-performance claimed speeds

Will require a Sata 3 (6GB/s) port or adapter to achieve full performance

Jun, 2011


Expert review by: Zardon (

Crucial RealSSD C300 256GB Review


KitGuru loves SSD's – and with small affordable units hitting the market such as the excellent Intel X25-V 40GB and the upcoming Corsair 40GB Force there has never been a better time to take the plunge.

Discuss this in our forums or leave a quick comment below.

Jul, 2010

Expert review by: Leo Waldock (

Crucial RealSSD C300 256GB Sata 3 SSD


SSD with Sata 3 capability for the early adopter

Using the Crucial C300 on a Sata 2.0 connection produced a warm glowing feeling but things went to pieces when using Sata 3.0. Most of the benchmark figures dipped alarmingly, however, Iometer gave great results. While there are performance gains with...

Apr, 2010

Expert review by: Nathan Edwards (

Crucial C300 256GB SSD Review


It's about damn time. 6Gb/s SATA is old news now. It's been half a year since we saw the first 6Gb/s SATA–enabled hard drive, and it was a frickin' mechanical drive. Talk about unnecessary. Solid state drives, on the other hand, have been bumping at...

Fastest read speeds ever; decent write speeds

Random writes can't touch SandForce drives; write-speed slowdowns after use

There’s no question that on a 6Gb/s SATA port, the Crucial C300 has by far the fastest read speeds we’ve ever seen. And on a 3Gb/s port, it’s nothing to sneeze at. But for sequential and random write speeds, it can’t touch SandForce drives. And its...

Jul, 2010

Expert review by: (

Firmware corruption probe implicates at least one RealSSD C300


We don't know too many folks who shelled out the dosh for Crucial's RealSSD C300, so perhaps it's no surprise that we haven't heard too many complaints about t...

Mar, 2010

Expert review by: PCMag Staff (

Crucial Real SSD C300


Preview of the Crucial Real SSD C300.

Mar, 2010

Expert review by: (

Crucial RealSSD C300 256GB Product Information - PCWorld


Includes EZ Gig II cloning software


Drive offers top-flight overall performance, and the best write performance we've seen.

Product Specifications


Certification:FCC, CE, RoHS, UL
Colour of product:Black / Grey
SSD form factor:2.5"

Operational conditions

Operating shock:1500
Operating temperature (T-T):0 - 70
Storage temperature (T-T):-55 - 95


Access time:0.1
Data Transfer Rate:6
ECC: Yes
Mean time between failures (MTBF):1200000
Memory Type:MLC
Read speed:355
Seek time:1
Solid-state drive capacity:128 / 64
Solid-state drive interface:SATA / Serial ATA III
Write speed:140 / 70


Operating voltage:5
Power consumption (read):1.7
Power Consumption (Standby):0.092
Power consumption (write):3.1

Technical Details

Operating shock:1500
Operating temperature (T-T):0 - 70
Storage temperature (T-T):-55 - 95

Weight & Dimensions

Depth:10 / 6.99
Height :9.5
Width:10 / 6.99