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CrucialCT4000T705SSD(3|5)
CrucialCT256M550SSD1
$152
▲ 60118 ▼

Release date: Q1 2024.

VS
▲ 527,484 ▼
 $152 

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

Effective Speed 
+724%
Real World Speed
Performance profile from 8,475 user samples
Benchmark your SSD here
142 User Benchmarks
Great bench: 981% 3TB free (System drive)
Poor bench: 463% 2TB free (System drive)
Poor: 463% Great: 981%
SPEED RANK: 2nd / 1080
8,333 User Benchmarks
Best Bench: 113% 106GB free
Worst Bench: 60% 231GB free
Poor: 60% Great: 113%
SPEED RANK: 328th / 1080
Effective Speed
Effective SSD Speed 		746 % Hugely faster effective speed.
+724% 		90.5 %
Average Score 
+873%
Read
Avg. Sequential Read Speed 		6,243 MB/s Insanely faster read speed.
+1,394% 		418 MB/s
Write
Avg. Sequential Write Speed 		6,298 MB/s Insanely faster write speed.
+1,414% 		416 MB/s
4K Read
Avg. 4K Random Read Speed 		98.4 MB/s Hugely faster random read.
+263% 		27.1 MB/s
4K Write
Avg. 4K Random Write Speed 		217 MB/s Hugely faster random write.
+155% 		85 MB/s
Mixed
Avg. Sequential Mixed IO Speed 		3,806 MB/s Insanely faster mixed IO speed.
+1,173% 		299 MB/s
4K Mixed
Avg. 4K Random Mixed IO Speed 		119 MB/s Hugely faster random mixed IO.
+214% 		37.9 MB/s
SusWrite
Avg. Sustained Write Speed 		4,964 MB/s Insanely faster sustained write speed.
+1,496% 		311 MB/s
Peak Score 
+943%
Read
Peak Sequential Read Speed 		7,702 MB/s Insanely faster peak read speed.
+1,553% 		466 MB/s
Write
Peak Sequential Write Speed 		8,576 MB/s Insanely faster peak write speed.
+1,725% 		470 MB/s
4K Read
Peak 4K Random Read Speed 		96 MB/s Hugely faster peak random read.
+201% 		31.9 MB/s
4K Write
Peak 4K Random Write Speed 		358 MB/s Hugely faster peak random write.
+203% 		118 MB/s
Mixed
Peak Sequential Mixed IO Speed 		4,335 MB/s Insanely faster peak mixed IO speed.
+1,202% 		333 MB/s
4K Mixed
Peak 4K Random Mixed IO Speed 		151 MB/s Hugely faster peak random mixed IO.
+225% 		46.4 MB/s
SusWrite
Peak Sequential Sustained Write 60s Average 		7,320 MB/s Insanely faster peak sustained write speed.
+1,495% 		459 MB/s
Value & Sentiment 
+∞%
Market Share
Based on 77,480,531 SSDs tested
See market share leaders
Market Share
Market Share (trailing 30 days) 		0.02 % Insanely higher market share.
+∞% 		0 %
Value
Value For Money 		236 % Insanely better value.
+2,623% 		8.68 %
User Rating
UBM User Rating 		60 % More popular.
+15% 		52 %
Price
Price (score) 		$484 $152 Much cheaper.
+69%
Nice To Haves 
+468%
Age
Newest 		7 Months Hugely more recent.
+94% 		127 Months
DQ Read
Peak 4K-64Thread Read Speed 		2,373 MB/s Hugely faster peak deep queue read.
+513% 		387 MB/s
DQ Write
Peak 4K-64Thread Write Speed 		1,836 MB/s Hugely faster peak deep queue write.
+409% 		361 MB/s
AS-SSD Total
AS-SSD Total Score 		8,002 Pts Hugely stronger server IO.
+545% 		1,240 Pts
DQ Mixed
Peak 4K-64Thread Mixed IO Speed 		2,086 MB/s Hugely faster peak deep queue mixed IO.
+769% 		240 MB/s
ADQ Read
Avg. 4K-64Thread Read Speed 		1,778 MB/s Hugely faster deep queue read.
+472% 		311 MB/s
ADQ Write
Avg. 4K-64Thread Write Speed 		1,163 MB/s Hugely faster deep queue write.
+312% 		282 MB/s
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed 		1,471 MB/s Hugely faster deep queue mixed IO.
+632% 		201 MB/s
Specifications 
Capacity
Capacity 		4TB 256GB
Conclusion 
Average Bench 746%
Average Bench 90.5%

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

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

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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 $169Nvidia RTX 4060 $296WD Black SN850X M.2 2TB $135
Intel Core i5-12400F $111Nvidia RTX 4060-Ti $345WD Black SN850X M.2 1TB $84
Intel Core i5-13600K $225Nvidia RTX 4070 $500Crucial T700 M.2 4TB $350
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