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YMTC PC42Q512GBG4Q

PC42Q512GBG4Q

The Yangtze Memory PC42Q512GBG4Q is an M.2 PCIe 4 NVMe SSD that debuted in early March 2025. With a capacity of 512 GB, the 3D QLC-powered drive promises sequential read speeds of up to 5.3 GB with writes up to 4.6 GB/s. We first tested the 22 by 42 version in June 2026; a 22 by 80 version is available as well.

YMTC promises lower-than-usual power consumption figures. At 150 TBW, projected reliability is average a best.

Performance

In Notebookcheck's tests with AS SSD, the drive delivered unimpressive sequential read and write rates of 3.95 GB/s and 2.51 GB/s, respectively. Throttling was plentiful as well, with very noticeable dips in DiskSpd read stress test.

TypeSSD
SizeM.2 2242
Capacity512 GB
InterfaceNVMe
Announced13.03.2025
LinkYMTC PC42Q512GBG4Q

Benchmarks

AS SSD - Copy Game
1374 MB/s (23%)
+ 1 benchmarks and specifications   + Show comparison chart
AS SSD - Copy Program
522 MB/s (19%)
+ 1 benchmarks and specifications   + Show comparison chart
AS SSD - Copy ISO
1793.4 MB/s (7%)
+ 1 benchmarks and specifications   + Show comparison chart
AS SSD - Score Total
2909 Points (18%)
+ 1 benchmarks and specifications   + Show comparison chart
AS SSD - Score Write
1446 Points (20%)
+ 1 benchmarks and specifications   + Show comparison chart
AS SSD - Score Read
1008 Points (16%)
+ 1 benchmarks and specifications   + Show comparison chart
AS SSD - Access Time Write *
0.1 ms (0%)
+ 1 benchmarks and specifications   + Show comparison chart
AS SSD - Access Time Read *
0.1 ms (0%)
+ 1 benchmarks and specifications   + Show comparison chart
AS SSD - 4K-64 Write
1075 MB/s (18%)
+ 1 benchmarks and specifications   + Show comparison chart
AS SSD - 4K-64 Read
569 MB/s (11%)
+ 1 benchmarks and specifications   + Show comparison chart
AS SSD - 4K Write
119.6 MB/s (23%)
+ 1 benchmarks and specifications   + Show comparison chart
AS SSD - 4K Read
44.7 MB/s (14%)
+ 1 benchmarks and specifications   + Show comparison chart
AS SSD - Sequential Write
2514 MB/s (22%)
+ 1 benchmarks and specifications   + Show comparison chart
AS SSD - Sequential Read
3950 MB/s (31%)
+ 1 benchmarks and specifications   + Show comparison chart
DiskSpd - DiskSpd 4k_q1t1_write
181.5 MB/s (42%)
+ 1 benchmarks and specifications   + Show comparison chart
DiskSpd - DiskSpd 4k_q1t1_read
41.6 MB/s (12%)
+ 1 benchmarks and specifications   + Show comparison chart
DiskSpd - DiskSpd 4k_q32t16_write
489 MB/s (7%)
+ 1 benchmarks and specifications   + Show comparison chart
DiskSpd - DiskSpd 4k_q32t16_read
610 MB/s (7%)
+ 1 benchmarks and specifications   + Show comparison chart
DiskSpd - DiskSpd seq_write
3106 MB/s (30%)
+ 1 benchmarks and specifications   + Show comparison chart
DiskSpd - DiskSpd seq_read
3228 MB/s (34%)
+ 1 benchmarks and specifications   + Show comparison chart
DiskSpd - DiskSpd seq_q8t1_write
4594 MB/s (32%)
+ 1 benchmarks and specifications   + Show comparison chart
DiskSpd - DiskSpd seq_q8t1_read
4987 MB/s (31%)
+ 1 benchmarks and specifications   + Show comparison chart
DiskSpd - DiskSpd Loop seq_q8t1_read
3951 MB/s (24%)
+ 1 benchmarks and specifications   + Show comparison chart
0100200300400500600700800900100011001200130014001500160017001800190020002100220023002400250026002700280029003000310032003300340035003600370038003900400041004200430044004500Tooltip
- Range of benchmark values
red legend - Average benchmark values
* Smaller numbers mean a higher performance

Add one or more devices and compare

In the following list you can select (and also search for) devices that should be added to the comparison. You can select more than one device.

search for model:
v1.35
log 29. 20:13:31

#0 ran 0s before starting gpusingle class +0s ... 0s

#1 no ids found in url (should be separated by "_") +0s ... 0s

#2 not redirecting to Ajax server +0s ... 0s

#3 did not recreate cache, as it is less than 5 days old! Created at Sat, 27 Jun 2026 08:36:48 +0200 +0.007s ... 0.007s

#4 composed specs +0.114s ... 0.12s

#5 did output specs +0s ... 0.12s

#6 getting avg benchmarks for device 4373 +0.006s ... 0.127s

#7 got single benchmarks 4373 +0.004s ... 0.131s

#8 got avg benchmarks for devices +0s ... 0.131s

#9 No cached benchmark found, getting uncached values +0.014s ... 0.145s

#10 No cached benchmark found, getting uncached values +0.192s ... 0.337s

#11 No cached benchmark found, getting uncached values +0.257s ... 0.594s

#12 No cached benchmark found, getting uncached values +0.121s ... 0.715s

#13 No cached benchmark found, getting uncached values +0.16s ... 0.876s

#14 No cached benchmark found, getting uncached values +0.179s ... 1.055s

#15 No cached benchmark found, getting uncached values +0.182s ... 1.237s

#16 No cached benchmark found, getting uncached values +0.466s ... 1.702s

#17 No cached benchmark found, getting uncached values +0.54s ... 2.243s

#18 No cached benchmark found, getting uncached values +0.14s ... 2.383s

#19 No cached benchmark found, getting uncached values +0.144s ... 2.527s

#20 No cached benchmark found, getting uncached values +0.276s ... 2.803s

#21 No cached benchmark found, getting uncached values +0.313s ... 3.117s

#22 No cached benchmark found, getting uncached values +0.172s ... 3.288s

#23 No cached benchmark found, getting uncached values +0.2s ... 3.489s

#24 No cached benchmark found, getting uncached values +0.048s ... 3.537s

#25 No cached benchmark found, getting uncached values +0.061s ... 3.598s

#26 No cached benchmark found, getting uncached values +0.047s ... 3.646s

#27 No cached benchmark found, getting uncached values +0.053s ... 3.699s

#28 No cached benchmark found, getting uncached values +0.049s ... 3.747s

#29 No cached benchmark found, getting uncached values +0.043s ... 3.791s

#30 No cached benchmark found, getting uncached values +0.04s ... 3.831s

#31 No cached benchmark found, getting uncached values +0.04s ... 3.871s

#32 min, max, avg, median took s +0.033s ... 3.904s

#33 return log +0.327s ... 4.231s

No reviews found for this CPU (yet).

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Klaus Hinum (Update: 2026-06-29)