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OCZAGT4-25SAT3-256G
CrucialCT250MX500SSD1
▲ 51500 ▼

Controller: Indilinx Everest 2 IDX400M00. Flash Memory: Micron Asynchronous 25nm MLC. Release date: Q2 2012.

VS
▲ 56654 ▼

Controller: Silicon Motion SM2258. Flash Memory: Micron 3D TLC. Release date: Q4 2017.

Effective Speed 
+40%
Real World Speed
Performance profile from 78,593 user samples
Benchmark your SSD here
1,416 User Benchmarks
Best Bench: 87% 238GB free
Worst Bench: 57% 185GB free (System drive)
Poor: 57% Great: 87%
SPEED RANK: 634th / 1080
77,177 User Benchmarks
Best Bench: 123% 74GB free
Worst Bench: 73% 64GB free (System drive)
Poor: 73% Great: 123%
SPEED RANK: 260th / 1080
Effective Speed
Effective SSD Speed 		72.3 % 101 % Much faster effective speed.
+40%
Average Score 
+51%
Read
Avg. Sequential Read Speed 		276 MB/s 451 MB/s Much faster read speed.
+63%
Write
Avg. Sequential Write Speed 		304 MB/s 394 MB/s Faster write speed.
+30%
4K Read
Avg. 4K Random Read Speed 		18.4 MB/s 33.7 MB/s Hugely faster random read.
+83%
4K Write
Avg. 4K Random Write Speed 		94.5 MB/s Faster random write.
+13% 		83.4 MB/s
Mixed
Avg. Sequential Mixed IO Speed 		193 MB/s 386 MB/s Hugely faster mixed IO speed.
+100%
4K Mixed
Avg. 4K Random Mixed IO Speed 		27 MB/s 45.4 MB/s Much faster random mixed IO.
+68%
SusWrite
Avg. Sustained Write Speed 		275 MB/s 352 MB/s Faster sustained write speed.
+28%
Peak Score 
+50%
Read
Peak Sequential Read Speed 		336 MB/s 514 MB/s Much faster peak read speed.
+53%
Write
Peak Sequential Write Speed 		391 MB/s 466 MB/s Faster peak write speed.
+19%
4K Read
Peak 4K Random Read Speed 		21.3 MB/s 42.6 MB/s Hugely faster peak random read.
+100%
4K Write
Peak 4K Random Write Speed 		131 MB/s Faster peak random write.
+13% 		116 MB/s
Mixed
Peak Sequential Mixed IO Speed 		236 MB/s 450 MB/s Hugely faster peak mixed IO speed.
+91%
4K Mixed
Peak 4K Random Mixed IO Speed 		31.8 MB/s 58.3 MB/s Hugely faster peak random mixed IO.
+83%
SusWrite
Peak Sequential Sustained Write 60s Average 		382 MB/s 458 MB/s Faster peak sustained write speed.
+20%
Value & Sentiment 
+∞%
Market Share
Based on 77,546,240 SSDs tested
See market share leaders
Market Share
Market Share (trailing 30 days) 		0 % 0.07 % Insanely higher market share.
+∞%
Value
Value For Money 		20.9 % 26 % Better value.
+24%
User Rating
UBM User Rating 		51 % 56 % Slightly more popular.
+10%
Price
Price (score) 		$35 Cheaper.
+13% 		$40
Nice To Haves 
+32%
Age
Newest 		150 Months 82 Months Much more recent.
+45%
DQ Read
Peak 4K-64Thread Read Speed 		255 MB/s 384 MB/s Much faster peak deep queue read.
+51%
DQ Write
Peak 4K-64Thread Write Speed 		316 MB/s 359 MB/s Faster peak deep queue write.
+14%
AS-SSD Total
AS-SSD Total Score 		964 Pts 1,258 Pts Much stronger server IO.
+30%
DQ Mixed
Peak 4K-64Thread Mixed IO Speed 		208 MB/s 278 MB/s Much faster peak deep queue mixed IO.
+34%
ADQ Read
Avg. 4K-64Thread Read Speed 		231 MB/s 329 MB/s Much faster deep queue read.
+42%
ADQ Write
Avg. 4K-64Thread Write Speed 		235 MB/s 294 MB/s Faster deep queue write.
+25%
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed 		194 MB/s 219 MB/s Faster deep queue mixed IO.
+13%
Specifications 
Capacity
Capacity 		256GB 250GB
Conclusion 
Average Bench 72.3%
Average Bench 101%

The OCZ Agility 4 is a relatively old SSD and has been included in the group test as a reference. In terms of overall speed the Agility 4 lags the current ten market leaders by an average of around 30%, considering that the Agility 4 is only 16 months old this highlights just how quickly the SSD market has evolved over the last two years. It's probably not worth upgrading for the sake of more speed unless you have a specific use case that demands it but if you are looking for a speed upgrade, you will gain up to around 50% by going for the Samsung 840 Pro or the OCZ Vector. [Sep '13 SSDrivePro]

MORE DETAILS

The MX500 is Crucial’s current flagship consumer SATA SSD featuring their latest second generation 64-layer 3D TLC NAND. It’s available in 250 GB, 500 GB, 1 TB and 2 TB capacities in a 2.5-inch form factor. All but the 2 TB version will also be available in M.2 (2280) form in the future. The MX500 features a Silicon Motion SM2258 controller which is a change from the Marvell 88SS1074 controller featured in the MX300 (it’s nearly two year old predecessor). Performance is around 30% better than on the MX300 which currently retails at the same price. The MX500 has an SLC cache which increases with drive capacity. Consequently, the larger capacities are better able to sustain high sequential write speeds. The 250 GB version has 250MB of SLC cache, the 500 GB has 512 MB, the 1 TB has 1 GB and the 2 TB has 2 GB. Extended sustained write performance tests show that even though speed does drop off after the cache has been exhausted, it is still maintained at very respectable levels. The MX500’s five year warranty is in line with Samsung’s 850 Evo and exceeds it in terms of endurance (just 75 TBW for the 250 GB 850 Evo versus 100 TBW for the 250 GB MX500). It doesn’t quite match up to the Samsung’s 850 Evo’s performance (effective speed 8% slower), however at current prices it is about 20% cheaper, and on balance offers better value for money. [Mar '18 SSDrivePro]

MORE DETAILS

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Solid State Drive Rankings (Price vs Performance) November 2024 SSD Rankings

Welcome to our SSD comparison. We calculate effective speed for both SATA and NVMe drives based on real world performance then adjust by current prices per GB to yield a value for money rating. Our calculated values are checked against thousands of individual user ratings. The customizable table below combines these factors to bring you the definitive list of top SSDs. [SSDrivePro]

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 Frequently Asked Questions

Storage Devices FAQ
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Solid State Drives
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The Best
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Intel Core i5-13600K $210Nvidia RTX 4060 $280WD Black SN850X M.2 2TB $135
Intel Core i5-12600K $159Nvidia RTX 4060-Ti $389WD Black SN850X M.2 1TB $84
Intel Core i5-12400F $111Nvidia RTX 4070 $500Crucial T700 M.2 4TB $370
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