CrucialCT250MX500SSD1
SanDiskSDSSDXPS-240G

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

Controller: Marvell 88SS9187-BLD2. Flash Memory: SanDisk 19nm eX2 ABL MLC. Release date: Q2 2014.

Real World Speed
Performance profile from 88,039 user samples
77,177 User Benchmarks
Best Bench: 123% 74GB free
Worst Bench: 73% 64GB free (System drive)
Poor: 73% Great: 123%
SPEED RANK: 260th / 1080
10,862 User Benchmarks
Best Bench: 114% 83GB free (System drive)
Worst Bench: 65% 20GB free (System drive)
Poor: 65% Great: 114%
SPEED RANK: 316th / 1080
Effective Speed
Effective SSD Speed
101 % Faster effective speed.
+10%
91.7 %
Read
Avg. Sequential Read Speed
451 MB/s 455 MB/s +1%
Write
Avg. Sequential Write Speed
394 MB/s 406 MB/s +3%
4K Read
Avg. 4K Random Read Speed
33.7 MB/s Faster random read.
+17%
28.9 MB/s
4K Write
Avg. 4K Random Write Speed
83.4 MB/s Slightly faster random write.
+9%
76.5 MB/s
Mixed
Avg. Sequential Mixed IO Speed
386 MB/s Much faster mixed IO speed.
+50%
258 MB/s
4K Mixed
Avg. 4K Random Mixed IO Speed
45.4 MB/s Much faster random mixed IO.
+36%
33.4 MB/s
SusWrite
Avg. Sustained Write Speed
352 MB/s +1% 350 MB/s
Read
Peak Sequential Read Speed
514 MB/s +1% 509 MB/s
Write
Peak Sequential Write Speed
466 MB/s 479 MB/s +3%
4K Read
Peak 4K Random Read Speed
42.6 MB/s Faster peak random read.
+20%
35.6 MB/s
4K Write
Peak 4K Random Write Speed
116 MB/s +3% 113 MB/s
Mixed
Peak Sequential Mixed IO Speed
450 MB/s Much faster peak mixed IO speed.
+42%
316 MB/s
4K Mixed
Peak 4K Random Mixed IO Speed
58.3 MB/s Much faster peak random mixed IO.
+37%
42.4 MB/s
SusWrite
Peak Sequential Sustained Write 60s Average
458 MB/s 480 MB/s +5%
Market Share
Based on 76,157,065 SSDs tested
Market Share
Market Share (trailing 30 days)
0.11 % Hugely higher market share.
+1,000%
0.01 %
Value
Value For Money
26.5 % Hugely better value.
+93%
13.7 %
User Rating
UBM User Rating
56 % +4% 54 %
Price
Price (score)
$39 Much cheaper.
+51%
$79
Age
Newest
77 Months Much more recent.
+36%
120 Months
DQ Read
Peak 4K-64Thread Read Speed
384 MB/s +2% 376 MB/s
DQ Write
Peak 4K-64Thread Write Speed
359 MB/s +5% 343 MB/s
AS-SSD Total
AS-SSD Total Score
1,258 Pts +4% 1,214 Pts
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
278 MB/s Much faster peak deep queue mixed IO.
+70%
164 MB/s
ADQ Read
Avg. 4K-64Thread Read Speed
329 MB/s +1% 325 MB/s
ADQ Write
Avg. 4K-64Thread Write Speed
294 MB/s Faster deep queue write.
+10%
267 MB/s
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
219 MB/s Much faster deep queue mixed IO.
+48%
148 MB/s
Capacity
Capacity
250GB 240GB
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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

The 240GB Sandisk Extreme Pro uses the same controller and NAND as its 13 months younger predecessor, the Extreme II. Comparing the Extreme II and Extreme Pro shows that average performance has increased by 10% but peak performance remains broadly unchanged. The Pro features an improved nCache which uses an SLC buffer to cache writes prior to writing them to the slower MLC NAND. In order to benefit from this improved caching, huge amounts of data need to be written for extended periods, an unlikely consumer scenario. Comparing core performance between the Samsung 840 Evo and Extreme Pro shows that the Extreme Pro averages around 12% faster than the Evo. The Extreme Pro also has a 10 year warranty but I wonder if SATA 3 will even be around at that time. Although the Extreme Pro has a superb performance profile it's not a game changer. [Jun '14 SSDrivePro]

MORE DETAILS

Solid State Drive Rankings (Price vs Performance) June 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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  • Fastest real world speed - Real World Speed measures performance for typical consumers.
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The Best
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