Comparison: Western Digital WD_BLACK SN850P 2TB vs. Samsung 990 PRO 2TB

Here you can compare SSDs (M.2 and SATA), portable drives and USB flash drives.
Simply select the products to compare from the list.

	Western Digital WD_BLACK SN850P 2TB	VS.	Samsung 990 PRO 2TB
	Show individual test		Show individual test
Technical manufacturer specifications
Manufacturer	Western Digital		Samsung
Model number	WDBBYV0020BNC-WRSN		MZ-V9P2T0BW
Capacity	2,048 GB	=	2,048 GB
Capacity (according to IEC)	1,863 GiB	=	1,863 GiB
pSLC cache	>400 GB		230 GB
Read speed	7,300 MB/s		7,450 MB/s
Write speed	6,600 MB/s		6,900 MB/s
Form factor	M.2 2280	=	M.2 2280
Interface	PCIe 4.0 x4	=	PCIe 4.0 x4
Controller	WD 20-82-10034-A1		Samsung Pascal (S4LV008)
DRAM	✓ Yes	=	✓ Yes
Memory module (NAND)	TLC	=	TLC
TBW (Total Bytes Written)	1200  terabyte	=	1200  terabyte
Warranty	5  Years	=	5  Years
AS SSD performance data
Sequential read	6,150 MB/s	3% ∆	5,967 MB/s
Sequential write	5,894 MB/s	1% ∆	5,827 MB/s
4K Read	79 MB/s	1% ∆	80 MB/s
4K Write	230 MB/s	29% ∆	178 MB/s
4K-64Thrd Read	2,588 MB/s	13% ∆	2,913 MB/s
4K-64Thrd Write	3,000 MB/s	7% ∆	3,221 MB/s
Access time read	0.017 ms	18% ∆	0.020 ms
Access time write	0.080 ms	36% ∆	0.109 ms
Score	8771	7% ∆	9398
CrystalDiskMark performance data
SEQ1M Q8T1 Read	7,362 MB/s	1% ∆	7,459 MB/s
SEQ1M Q8T Write	6,668 MB/s	4% ∆	6,967 MB/s
SEQ1M Q1T1 Read	5,180 MB/s	52 % ∆	3,410 MB/s
SEQ1M Q1T1 Write	5,898 MB/s	4% ∆	5,688 MB/s
RND4K Q32T16 Read	4,245 MB/s	17% ∆	3,635 MB/s
RND4K Q32T16 Write	3,523 MB/s	9% ∆	3,242 MB/s
RND4K Q1T1 Read	85 MB/s	1% ∆	85 MB/s
RND4K Q1T1 Write	264 MB/s	36% ∆	194 MB/s
Buy product
Current price	375 $	25% ∆	469 $
Price per gigabyte	0.18 $	25% ∆	0.23 $
#ad	Buy product		Buy product

Western Digital WD_BLACK SN850P 2TB	Samsung 990 PRO 2TB

You can use the URL below to refer to this comparison.