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CrucialCT256M550SSD1
$152
CrucialCT4000T705SSD(3|5)
▲ 527,484 ▼
 $152 

Controller: Marvell 88SS9189. Flash Memory: Micron Synchronous 20nm MLC. Release date: Q1 2014.

VS
▲ 60115 ▼

Release date: Q1 2024.

Effective Speed 
+734%
Real World Speed
Performance profile from 8,421 user samples
Benchmark your SSD here
8,333 User Benchmarks
Best Bench: 113% 106GB free
Worst Bench: 60% 231GB free
Poor: 60% Great: 113%
SPEED RANK: 328th / 1080
88 User Benchmarks
Great bench: 994% 1TB free
Poor bench: 492% 3.5TB free
Poor: 492% Great: 994%
SPEED RANK: 2nd / 1080
Effective Speed
Effective SSD Speed 		90.5 % 755 % Hugely faster effective speed.
+734%
Average Score 
+878%
Read
Avg. Sequential Read Speed 		418 MB/s 6230 MB/s Insanely faster read speed.
+1,390%
Write
Avg. Sequential Write Speed 		416 MB/s 6177 MB/s Insanely faster write speed.
+1,385%
4K Read
Avg. 4K Random Read Speed 		27.1 MB/s 106 MB/s Hugely faster random read.
+291%
4K Write
Avg. 4K Random Write Speed 		85 MB/s 223 MB/s Hugely faster random write.
+162%
Mixed
Avg. Sequential Mixed IO Speed 		299 MB/s 3838 MB/s Insanely faster mixed IO speed.
+1,184%
4K Mixed
Avg. 4K Random Mixed IO Speed 		37.9 MB/s 123 MB/s Hugely faster random mixed IO.
+225%
SusWrite
Avg. Sustained Write Speed 		311 MB/s 5006 MB/s Insanely faster sustained write speed.
+1,510%
Peak Score 
+1,048%
Read
Peak Sequential Read Speed 		466 MB/s 8111 MB/s Insanely faster peak read speed.
+1,641%
Write
Peak Sequential Write Speed 		470 MB/s 8365 MB/s Insanely faster peak write speed.
+1,680%
4K Read
Peak 4K Random Read Speed 		31.9 MB/s 322 MB/s Hugely faster peak random read.
+909%
4K Write
Peak 4K Random Write Speed 		118 MB/s 365 MB/s Hugely faster peak random write.
+209%
Mixed
Peak Sequential Mixed IO Speed 		333 MB/s 4298 MB/s Insanely faster peak mixed IO speed.
+1,191%
4K Mixed
Peak 4K Random Mixed IO Speed 		46.4 MB/s 151 MB/s Hugely faster peak random mixed IO.
+225%
SusWrite
Peak Sequential Sustained Write 60s Average 		459 MB/s 7268 MB/s Insanely faster peak sustained write speed.
+1,483%
Value & Sentiment 
+678%
Market Share
Based on 76,988,212 SSDs tested
See market share leaders
Market Share
Market Share (trailing 30 days) 		0.01 % 0.01 %
Value
Value For Money 		8.68 % 249 % Insanely better value.
+2,763%
User Rating
UBM User Rating 		52 % 60 % More popular.
+15%
Price
Price (score) 		$152 Much cheaper.
+67% 		$460
Nice To Haves 
+477%
Age
Newest 		126 Months 6 Months Hugely more recent.
+95%
DQ Read
Peak 4K-64Thread Read Speed 		387 MB/s 2404 MB/s Hugely faster peak deep queue read.
+521%
DQ Write
Peak 4K-64Thread Write Speed 		361 MB/s 1826 MB/s Hugely faster peak deep queue write.
+406%
AS-SSD Total
AS-SSD Total Score 		1,240 Pts 8,507 Pts Hugely stronger server IO.
+586%
DQ Mixed
Peak 4K-64Thread Mixed IO Speed 		240 MB/s 2067 MB/s Hugely faster peak deep queue mixed IO.
+761%
ADQ Read
Avg. 4K-64Thread Read Speed 		311 MB/s 1781 MB/s Hugely faster deep queue read.
+473%
ADQ Write
Avg. 4K-64Thread Write Speed 		282 MB/s 1191 MB/s Hugely faster deep queue write.
+322%
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed 		201 MB/s 1503 MB/s Hugely faster deep queue mixed IO.
+648%
Specifications 
Capacity
Capacity 		256GB 4TB
Conclusion 
Average Bench 90.5%
Average Bench 755%

The 256GB Crucial M550 is a welcome improvement over the 240GB M500. The new Marvel 88SS9189 controller has addressed our primary concern with the M500 which was poor sequential write speed. With sequential read/write speeds of 510/478 MB/s the M550 has a healthy core performance profile. Comparing the M550 and M500 shows that the new M550 leads on nearly every single performance metric. Unfortunately the M550 is priced significantly higher than the M500 but prices will likely drop as retailers build up stocks of the new M550. A key comparable for the M550 is the similarly priced market leading Samsung Evo. Comparing the Evo and M550 shows that the Evo is around 11% slower in terms of effective speed. [Mar '14 SSDrivePro]

MORE DETAILS

The Crucial T705 is a slightly improved version of the T700. Both are among the first PCIe 5.0 SSDs, offering peak data rates double those of PCIe 4.0. The T705 can reach staggering burst sequential read and write speeds of 15 and 12 GB/s. However, out of cache performance still lies within PCIe 4.0 limits so the T705 doesn’t have a PCIe 5.0 advantage during sustained workloads. The T705 offers around a 5% effective speed advantage over the T700 which is not justifiable at current prices (1TB = $180, 2TB = $300, 4TB = $500). While it may appeal to users looking for almost unparalleled burst performance, most users won’t notice much improvement compared to the WD Black SN850X because of other bottlenecks in a typical system. [Jun '24 SSDrivePro]

MORE DETAILS

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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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The Best
CPUGPUSSD
Intel Core i5-12600K $170Nvidia RTX 4060 $285WD Black SN850X M.2 2TB $144
Intel Core i5-12400F $112Nvidia RTX 4060-Ti $375WD Black SN850X M.2 1TB $75
Intel Core i5-13600K $245Nvidia RTX 4070 $500Crucial T700 M.2 4TB $350
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