Comparison: ADATA SU650 256GB vs. Samsung 870 EVO 250GB

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	ADATA SU650 256GB	VS.	Samsung 870 EVO 250GB
	Show individual test		Show individual test
Technical manufacturer specifications
Manufacturer	ADATA		Samsung
Model number	ASU650SS-256GT-R		MZ-77E250B/EU
Capacity	256 GB		250 GB
Capacity (according to IEC)	224 GiB		233 GiB
pSLC cache	84 GB		GB
Read speed	520 MB/s		560 MB/s
Write speed	450 MB/s		530 MB/s
Form factor	2.5"	=	2.5"
Interface	SATA 6 Gbps	=	SATA 6 Gbps
Controller	YEESTOR YS9082HT		Samsung MKX (Metis S4LR059)
DRAM	No		✓ Yes
Memory module (NAND)	QLC		TLC
TBW (Total Bytes Written)	140  terabyte		150  terabyte
Warranty	5  Years		3  Years
AS SSD performance data
Sequential read	508 MB/s	2% ∆	517 MB/s
Sequential write	448 MB/s	2% ∆	457 MB/s
4K Read	23 MB/s	91% ∆	44 MB/s
4K Write	80 MB/s	12% ∆	90 MB/s
4K-64Thrd Read	129 MB/s	70% ∆	219 MB/s
4K-64Thrd Write	179 MB/s	3% ∆	184 MB/s
Access time read	0.080 ms	95% ∆	0.041 ms
Access time write	0.133 ms	250% ∆	0.038 ms
Score	616	31% ∆	810
CrystalDiskMark performance data
SEQ1M Q8T1 Read	528 MB/s	4% ∆	549 MB/s
SEQ1M Q8T Write	475 MB/s	2% ∆	483 MB/s
SEQ1M Q1T1 Read	500 MB/s	7 % ∆	536 MB/s
SEQ1M Q1T1 Write	456 MB/s	4% ∆	475 MB/s
RND4K Q32T16 Read	227 MB/s	2% ∆	231 MB/s
RND4K Q32T16 Write	190 MB/s	2% ∆	194 MB/s
RND4K Q1T1 Read	37 MB/s	32% ∆	48 MB/s
RND4K Q1T1 Write	84 MB/s	16% ∆	97 MB/s
Buy product
Current price	66 $	158% ∆	170 $
Price per gigabyte	0.26 $	158% ∆	0.68 $
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ADATA SU650 256GB	Samsung 870 EVO 250GB

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