Samsung 845DC Pro SSD 800 Gigabyte Review
Category : Storage
Published by Marc Büchel on 21.07.14
The 845DC PRO 800 GB is Samsung's flagship enterprise-grade SATA SSD. The series features Samsungs latest 3D V-NAND with 24 layers and 128Gbit density. Thanks to this NAND flash memory the drive is endurance rated for 10 Drive Writes per Day over five years, which is a seriously high value. Furthermore this drive is recommended for write-intense workloads featuring high sequential as well as random throughput rates.
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 Articolo in Italiano |
Specifications / Delivery
| Model | 845DC PRO 400 GB | 845DC PRO 800GB |
| Capacity | 400 GB | 800 GB |
| Form Factor | 2.5'' | 2.5'' |
| Controller | Samsung 3-core MDX | Samsung 3-core MDX |
| Memory |
|
|
| Throughput |
|
|
| QOS 4KB, QD32 (99.99%) |
|
|
| QOS 4KB, QD1 (99.99%) |
|
|
| Power Consumption |
|
|
| Temperature |
|
|
| Endurance | 10 Drive Writes per Day (DWPD) 4 TB per day |
10 Drive Writes per Day (DWPD) 8 TB per day |
| Warranty | 5 Years | 5 Years |
| Price |
959.99 US-Dollar |
1'829.99 US-Dollar |
Not long ago Samsung have announced three new SSD series. There is for instance the 850 PRO for endusers, then there is the 845DC EVO and last but not least there is the 845DC PRO, which we're reviewing here. In case of the 850 PRO the most significant upgrade concerns the NAND Flash used, since Samsung is now bringing 3D V-NAND to the mass market, enabling a new level of reliability and endurance. With the 845DC EVO you get a datacenter optimized SSD with TLC memory, recommended to be used in read-intense environments. The 845DC PRO, with it's 3D V-NAND is recommended for write-intense environments and it's also to cope well with mixed workloads. The new 3D V-NAND that's being used in case of the 845DC PRO features 24 layers and 40nm process technology is needed to manufacture these chips with up to 128Gbit density. 3D V-NAND offers higher endurance as well as increased performance at the same time.
As we already mentioned, Samsung is recommending the 845DC PRO for write-intense environments. Therefore it's irrelevant if you look at sequential or random read/write performance, since the 845DC PRO is consistently quicker than TLC based 845DC EVO. But in the end it's especially endurance where the 845DC PRO excels. Samsung is claiming that the 400 Gigabyte as well as the 800 Gigabyte version are capable of withstand 10 Drive Writes Per Day over a time period of five years. Doing the maths this translates into a whopping 14'600 TBW in case of the 800 Gigabyte drive or 7'300 TBW in case of the 400 Gigabyte drive.
Another necessary feature in case of an enterprise-grade SSD is data-path-protection in case of a sudden power-loss. For this purpose there is an array of tantalum capacitors ensuring data residing in the volatile 512MB DDR3 buffer can be safely written into non-volatile NAND Flash memory.
If we start looking for the controller we see there is the Samsung MDX model. Despite the fact, that there is already an MEX version around Samsung have decided to use the older model, which for instance clocks 100 MHz lower then the newer MEX. The reason for choosing the MDX controller might be that internal validation testing for the 3D V-NAND has been done with the MDX version of the controller and therefore Samsung is able to offer even higher reliability.
Last but not least let us have a quick look at the exterior. The Samsung 845DC PRO is only available with a 2.5 inch casing measuring 7 millimeter in height. In case of the interface you get SATA 3.1. We're rather curious to see wether Samsung is planning on releasing a SAS version of this drive or not. This might be a move demanded by the markets actually, since lots of datacenters only use SAS SSDs.
Impressions
How do we test?
Testenvironment
| Models | |
| ADATA S511 60 GB |
|
| ADATA S511 SSD 120 GB |
|
| ADATA XPG mSATA SSD SX300 128 GB |
|
| Corsair Force 3 120 GB |
|
| Corsair Force GS 240 GB |
|
| Corsair Force GT 120 GB |
|
| Corsair Neutron GTX 240 GB |
|
| Crucial M500 480 GB |
|
| Extrememory XLR8 Express 120 GB |
|
| Intel SSD 335 Series 240 GB |
|
| Intel SSD 520 180 GB |
|
| Intel SSD 520 240 GB |
|
| Intel X25-M 80 GB |
|
| Intel X25-M Gen2 34nm 160 GB |
|
| Kingmax SMP35 Client 240 GB | n/A |
| Kingston HyperX SSD 120 GB |
|
| Kingston HyperX 3K SSD 120 GB |
|
| Kingston HyperX SSD 240 GB |
|
| Kingston SSDNow V+ 200 90 GB |
|
| OCZ Agility 3 240 GB |
|
| OCZ Agility 4 256 GB |
|
| OCZ IBIS 240 GB |
|
| OCZ Octane 512 GB |
|
| OCZ Octane 1 TB |
|
| OCZ RevoDrive 3 240 GB |
|
| OCZ RevoDrive 3 X2 480 GB PCIe-SSD |
|
| OCZ RevoDrive X2 480 GB PCIe-SSD |
|
| OCZ RevoDrive Hybrid 120GB SSD, 1TB HDD |
|
| OCZ Synapse 64 GB |
|
| OCZ Deneva 2 200 GB eMLC |
|
| OCZ Vector 150 240 GB |
|
| OCZ Vector 256 GB |
|
| OCZ Vertex 3 240 GB |
|
| OCZ Vertex 3.20 120 GB |
|
| OCZ Vertex 3.20 240 GB |
|
| OCZ Vertex 4 256 GB |
|
| OCZ Vertex 4 512 GB |
|
| OCZ Vertex 450 256 GB |
|
| OCZ Vertex 460 120 GB |
|
| OCZ Vertex 460 240 GB |
|
| Plextor M5Pro 256 GB |
|
| Samsung PM830 SSD 128 GB |
|
| Samsung PM830 SSD 256 GB |
|
| Smasung 840Evo 120 GB |
|
| Samsung 840Evo 250 GB mSATA |
|
| Samsung 840Evo 1 TB |
|
| Samsung 840 Pro 256 GB |
|
| Samsung 845DCPRO 800 GB |
|
| SanDisk Extreme SSD 120 GB |
|
| SanDisk Extreme SSD 240 GB |
|
| Toshiba THNSNF512GCSS 512 GB | n/A |
Testenvironment |
|
| Motherboard | ASUS Maximus VII Gene |
| Chipset | Intel Z97 |
| CPU | Intel Core i7-4700k |
| Memory | G.Skill Ares 2133 MHz |
| Graphics card | ASUS GeFroce GTX 680 |
| Storage (system) | Intel SSD 335 Series |
| Operating systems | Windows 7 64 Bit with caching drives |
iozone
iozone3 is a benchmark suite for storage solutions which natively runs under Windows/Linux.We are testing the throughput rates/IOPS with different block sizes using the following commands:
KByte/s
- iozone -Rb test4k.xls -i0 -i1 -i2 -+n -r 4k -s4g -t32
- iozone -Rb test256k.xls -i0 -i1 -i2 -+n -r 256k -s4g -t32
iops
- iozone -Rb test4ko.xls -i0 -i1 -i2 -+n -r 4k -s4g -t32 -O
KByte/s, Sequential write |
||
| Sequential write | Bewertung |
Throughput 256 KByte Block Size |
| OCZ RevoDrive 3 X2 480 GB PCIe-SSD |  |
1'291'486 |
| OCZ RevoDrive 3 240 GB | No Review |
771'043 |
| OCZ RevoDrive Hybrid 120GB SSD, 1TB HDD |  |
750'096 |
| OCZ RevoDrive X2 480 GB PCIe-SSD |  |
694'586 |
| OCZ IBIS 240 GB | |
680'372 |
| Samsung 840 Pro 256 GB | |
536'082 |
| OCZ Vector 150 240 GB |
 |
534'262 |
| OCZ Vector 256 GB | |
534'058 |
| OCZ Deneva 2 200 GB eMLC | |
533'969 |
| Intel SSD 335 Series 240 GB | No Review |
533'672 |
| OCZ Vertex 450 256 GB |
|
522'897 |
| Corsair Force GS 240 GB | |
522'613 |
| OCZ Vertex 3 240 GB | |
522'212 |
| Kingmax SMP35 Client 240 GB | |
519'430 |
| Kingston HyperX SSD 240 GB | |
519'190 |
| Corsair Neutron GTX 240 GB | |
519'104 |
| OCZ Vertex 3.20 240 GB | |
517'290 |
| Intel SSD 520 240 GB | |
516'603 |
| Kingston HyperX SSD 120 GB | |
515'218 |
| OCZ Vertex 4 256 GB | |
513'309 |
| Corsair Force GT 120 GB | |
512'676 |
| Intel SSD 520 180 GB | No Review |
512'628 |
| SanDisk Extreme SSD 240 GB | No Review |
511'805 |
| OCZ Vertex 3.20 120 GB | |
510'245 |
| SanDisk Extreme SSD 120 GB | |
507'743 |
| Kingston HyperX 3K SSD 120 GB | |
505'669 |
| Toshiba THNSNF512GCSS 512 GB | No Review |
504'589 |
| Kingston SSDNow V+ 200 90 GB | |
502'272 |
| Samsung 845DCPRO 800 GB | 500'153 | |
| ADATA XPG mSATA SSD SX300 128 GB | |
499'239 |
| Extrememory XLR8 Express 120 GB | |
491'205 |
| OCZ Synapse 64 GB | |
469'784 |
| Samsung 840 Evo 1 TB | |
462'097 |
| ADATA S511 60 GB | |
457'001 |
| Plextor M5 Pro 256 GB | No Review |
444'122 |
| Crucial M500 480 GB | No Review |
439'829 |
| OCZ Vertex 4 512 GB | |
434'466 |
| OCZ Vertex 460 120 GB | |
421'139 |
| OCZ Agility 4 256 GB | |
405'911 |
| ADATA S511 SSD 120 GB | |
343'488 |
| Corsair Force 3 120 GB |  |
328'922 |
| Samsung 840 Evo 250 GB mSATA |
No Review |
324'238 |
| Samsung PM830 SSD 256 GB | |
321'474 |
| OCZ Octane 1 TB | |
314'144 |
| OCZ Octane 512 GB | |
307'781 |
| Samsung PM830 SSD 128 GB | |
271'696 |
| OCZ Agility 3 240 GB | |
266'401 |
| Samsung 840Evo 120 GB | No Review |
219'159 |
| Intel X25-M Gen2 34nm 160 GB | |
80'719 |
| Intel X25-M 80 GB | |
77'257 |
KByte/s, Sequential Read |
||
| Sequential Read |
Bewertung |
Throughput 256 KByte Block Size |
| OCZ RevoDrive 3 X2 480 GB PCIe-SSD | |
1'460'560 |
| OCZ RevoDrive 3 240 GB | No Review |
857'972 |
| OCZ IBIS 240 GB | |
806'858 |
| OCZ RevoDrive Hybrid 120GB SSD, 1TB HDD | |
729'929 |
| OCZ RevoDrive X2 480 GB PCIe-SSD | |
716'357 |
| OCZ Vector 256 GB | |
553'400 |
| OCZ Vector 150 240 GB |
|
547'188 |
| Intel SSD 520 240 GB | |
545'843 |
| Intel SSD 520 180 GB | No Review |
545'656 |
| Samsung 840 Pro 256 GB | |
545'353 |
| Samsung 845DCPRO 800 GB | 544'499 | |
| ADATA XPG mSATA SSD SX300 128 GB | |
543'650 |
| ADATA S511 SSD 120 GB | |
542'606 |
| Corsair Neutron GTX 240 GB | |
542'442 |
| OCZ Vertex 4 512 | |
542'075 |
| Kingston HyperX SSD 120 GB | |
541'613 |
| Intel SSD 335 Series 240 GB | No Review |
541'542 |
| Corsair Force GS 240 GB | |
541'086 |
| OCZ Deneva 2 200 GB eMLC | |
540'973 |
| Toshiba THNSNF512GCSS 512 GB | No Review |
539'056 |
| Samsung PM830 SSD 128 GB | |
539'754 |
| Corsair Force GT 120 GB | |
539'648 |
| Kingston HyperX SSD 240 GB | |
537'745 |
| ADATA S511 60 GB | |
537'560 |
| OCZ Vertex 4 256 | |
536'605 |
| Samsung 840 Evo 1 TB | |
536'542 |
| OCZ Vertex 3 240 GB | |
534'988 |
| OCZ Vertex 3.20 240 GB | |
534'392 |
| OCZ Vertex 450 256 GB |
|
534'241 |
| Samsung PM830 SSD 256 GB | |
534'154 |
| Samsung 840 Evo 250 GB mSATA | No Review |
532'816 |
| Plextor M5 Pro 256 GB | No Review |
530'606 |
| OCZ Vertex 3.20 120 GB | |
530'584 |
| Kingston HyperX 3K SSD 120 GB | |
529'995 |
| SanDisk Extreme SSD 240 GB | No Review |
529'520 |
| OCZ Vertex 460 120 GB | |
529'462 |
| Crucial M500 480 GB | No Review |
525'278 |
| Extrememory XLR8 Express 120 GB | |
521'930 |
| OCZ Agility 3 240 GB | |
516'479 |
| Kingston SSDNow V+ 200 90 GB | |
510'372 |
| SanDisk Extreme SSD 120 GB | |
507'743 |
| Samsung 840Evo 120 GB | No Review |
504'587 |
| Kingmax SMP35 Client 240 GB | |
498'223 |
| Corsair Force 3 120 GB | |
490'777 |
| OCZ Synapse 64 GB | |
441'396 |
| OCZ Octane 1 TB | |
440'052 |
| OCZ Octane 512 GB | |
438'465 |
| Intel X25-M Gen2 34nm 160 GB |
|
247'759 |
| Intel X25-M 80 GB | |
240'404 |
| OCZ Agility 4 256 GB | |
209'723 |
KByte/s, Random write |
||
| Random write |
Bewertung |
Throughput 4 KByte Block Size |
| OCZ RevoDrive 3 X2 480 GB PCIe-SSD | |
756'658 |
| Samsung 840 Pro 256 GB | |
412'837 |
| OCZ RevoDrive 3 240 GB | No Review |
382'970 |
| OCZ Vertex 4 512 GB | |
362'053 |
| OCZ Vector 150 240 GB |
|
356'006 |
| OCZ Vertex 4 256 GB | |
354'573 |
| OCZ Vector 256 GB | |
354'246 |
| Crucial M500 480 GB | No Review |
346'003 |
| Samsung 840 Evo 1 TB | |
344'730 |
| Samsung 845DCPRO 800 GB | 343'726 | |
| OCZ Agility 4 256 GB | |
341'478 |
| OCZ Octane 1 TB | |
325'007 |
| OCZ Octane 512 GB | |
324'023 |
| Corsair Force GS 240 GB | |
301'486 |
| Samsung 840 Evo 250 GB mSATA |
No Review |
299'848 |
| OCZ Vertex 450 256 GB |
|
292'401 |
| SanDisk Extreme SSD 240 GB | No Review |
287'255 |
| OCZ Vertex 3.20 240 GB | |
286'949 |
| Corsair Neutron GTX 240 GB | |
285'558 |
| OCZ Vertex 460 120 GB | |
285'407 |
| Intel SSD 520 180 GB | No Review |
284'858 |
| Intel SSD 520 240 GB | |
283'794 |
| OCZ Deneva 2 200 GB eMLC | |
283'409 |
| OCZ Vertex 3.20 120 GB | |
282'578 |
| Kingston HyperX SSD 240 GB | |
280'556 |
| Kingston HyperX 3K SSD 120 GB | |
279'967 |
| Kingston SSDNow V+ 200 90 GB | |
276'859 |
| OCZ Vertex 3 240 GB | |
275'499 |
| ADATA XPG mSATA SSD SX300 128 GB | |
264'870 |
| OCZ IBIS 240 GB | |
262'687 |
| Intel SSD 335 Series 240 GB | No Review |
262'005 |
| Kingston HyperX SSD 120 GB | |
255'988 |
| Plextor M5 Pro 256 GB | No Review |
254'918 |
| Corsair Force GT 120 GB | |
253'269 |
| SanDisk Extreme SSD 120 GB | |
252'045 |
| ADATA S511 SSD 120 GB | |
244'150 |
| ADATA S511 60 GB | |
226'394 |
| OCZ Agility 3 240 GB | |
242'683 |
| Extrememory XLR8 Express 120 GB | |
237'082 |
| Corsair Force 3 120 GB | |
225'092 |
| OCZ RevoDrive Hybrid 120GB SSD, 1TB HDD | |
213'027 |
| OCZ Synapse 64 GB | |
200'308 |
| Samsung PM830 SSD 256 GB | |
156'814 |
| OCZ RevoDrive X2 480 GB PCIe-SSD | |
156'644 |
| Samsung 840Evo 120 GB | No Review |
148'166 |
| Samsung PM830 SSD 128 GB | |
132'997 |
| Toshiba THNSNF512GCSS 512 GB | No Review |
95'808 |
| Kingmax SMP35 Client 240 GB | |
94'447 |
| Intel X25-M Gen2 34nm 160 GB |
|
62'388 |
| Intel X25-M 80 GB | |
48'194 |
KByte/s, Random read |
||
| Random read |
Bewertung |
Throughput 4 KByte Block Size |
| OCZ RevoDrive 3 X2 480 GB PCIe-SSD | |
640'327 |
| Plextor M5 Pro 256 GB | No Review |
392'851 |
| Samsung 840 Evo 250 GB mSATA | No Review |
400'192 |
| Samsung 840 Evo 1 TB | |
384'527 |
| OCZ Vector 256 GB | |
381'510 |
| Toshiba THNSNF512GCSS 512 GB | No Review |
373'590 |
| OCZ Vertex 4 512 GB | |
368'728 |
| Samsung 845DCPRO 800 GB | 368'001 | |
| OCZ RevoDrive 3 240 GB | No Review |
364'987 |
| Corsair Neutron GTX 240 GB | |
359'009 |
| OCZ IBIS 240 GB | |
357'112 |
| Samsung 840 Pro 256 GB | |
353'123 |
| OCZ Vertex 4 256 GB | |
348'881 |
| Samsung 840Evo 120 GB | No Review |
348'724 |
| Crucial M500 480 GB | No Review |
346'164 |
| OCZ Vertex 450 256 GB |
|
337'922 |
| OCZ Vector 150 240 GB |
|
328'627 |
| Samsung PM830 SSD 256 GB | |
310'109 |
| OCZ Vertex 460 120 GB | |
309'467 |
| Intel SSD 520 240 GB | |
283'794 |
| OCZ Agility 4 256 GB | |
255'743 |
| Kingmax SMP35 Client 240 GB | |
231'999 |
| OCZ Deneva 2 200 GB eMLC | |
226'958 |
| Intel SSD 520 180 GB | No Review |
212'409 |
| OCZ Vertex 3.20 240 GB | |
171'179 |
| Intel SSD 335 Series 240 GB | No Review |
171'684 |
| Kingston HyperX SSD 240 GB | |
168'648 |
| OCZ Vertex 3 240 GB | |
167'922 |
| Corsair Force GS 240 GB | |
163'408 |
| Samsung PM830 SSD 128 GB | |
151'097 |
| Extrememory XLR8 Express 120 GB | |
149'622 |
| OCZ Agility 3 240 GB | |
142'942 |
| SanDisk Extreme SSD 240 GB | No Review |
141'910 |
| OCZ Octane 1 TB | |
126'603 |
| OCZ Octane 512 GB | |
123'553 |
| ADATA XPG mSATA SSD SX300 128 GB | |
102'038 |
| Kingston HyperX 3K SSD 120 GB | |
102'031 |
| Corsair Force GT 120 GB | |
98'387 |
| Kingston HyperX SSD 120 GB | |
96'042 |
| ADATA S511 SSD 120 GB | |
95'928 |
| SanDisk Extreme SSD 120 GB | |
93'316 |
| Kingston SSDNow V+ 200 90 GB | |
89'121 |
| OCZ RevoDrive Hybrid 120GB SSD, 1TB HDD | |
87'188 |
| Corsair Force 3 120 GB | |
84'113 |
| OCZ Vertex 3.20 120 GB | |
81'160 |
| Intel X25-M Gen2 34nm 160 GB |
|
58'647 |
| ADATA S511 60 GB | |
51'187 |
| OCZ Synapse 64 GB | |
47'918 |
| OCZ RevoDrive X2 480 GB PCIe-SSD | |
43'003 |
| Intel X25-M 80 GB | |
30'287 |
IOPS, Random write |
||
| Random write |
Bewertung |
IOPS 4 KByte Block Size |
| OCZ RevoDrive 3 X2 480 GB PCIe-SSD | |
189'164 |
| OCZ RevoDrive 3 240 GB | No Review |
95'782 |
| OCZ Vertex 4 512 GB | |
90'519 |
| Samsung 845DCPRO 800 GB | 85'813 | |
| Samsung 840 Evo 1 TB | |
85'792 |
| Crucial M500 480 GB | No Review |
88'642 |
| OCZ Vector 256 GB | |
88'537 |
| OCZ Vertex 4 256 GB | |
88'460 |
| OCZ Vector 150 240 GB |
|
81'175 |
| OCZ Agility 4 256 GB | |
85'373 |
| Samsung 840 Evo 250 GB mSATA | No Review |
76'721 |
| Corsair Force GS 240 GB | |
75'577 |
| OCZ Vertex 450 256 GB |
|
74'983 |
| OCZ Deneva 2 200 GB eMLC | |
74'389 |
| Samsung 840 Pro 256 GB | |
72'000 |
| OCZ Vertex 3.20 240 GB | |
71'470 |
| Intel SSD 520 240 GB | |
71'338 |
| OCZ Vertex 460 120 GB | |
71'323 |
| OCZ Vertex 3.20 120 GB | |
71'227 |
| Corsair Neutron GTX 240 GB | |
71'180 |
| Intel SSD 520 180 GB | No Review |
70'944 |
| OCZ Vertex 3 240 GB | |
70'031 |
| Kingston HyperX SSD 240 GB | |
70'016 |
| Kingston HyperX 3K SSD 120 GB | |
69'760 |
| Corsair Force GT 120 GB | |
69'108 |
| OCZ IBIS 240 GB | |
67'339 |
| ADATA XPG mSATA SSD SX300 128 GB | |
66'107 |
| SanDisk Extreme SSD 240 GB | No Review |
65'817 |
| Intel SSD 335 Series 240 GB | No Review |
65'714 |
| Kingston SSDNow V+ 200 90 GB | |
64'446 |
| Plextor M5 Pro 256 GB | No Review |
63'620 |
| Kingston HyperX SSD 120 GB | |
63'553 |
| ADATA S511 SSD 120 GB | |
61'302 |
| OCZ Agility 3 240 GB | |
60'579 |
| Extrememory XLR8 Express 120 GB | |
58'604 |
| ADATA S511 60 GB | |
56'749 |
| Corsair Force 3 120 GB | |
56'017 |
| SanDisk Extreme SSD 120 GB | |
53'719 |
| OCZ RevoDrive Hybrid 120GB SSD, 1TB HDD | |
53'618 |
| OCZ Synapse 64 GB | |
52'126 |
| OCZ RevoDrive X2 480 GB PCIe-SSD | |
39'744 |
| Samsung PM830 SSD 256 GB | |
39'192 |
| Samsung 840Evo 120 GB | No Review |
38'077 |
| Samsung PM830 SSD 128 GB | |
32'772 |
| Toshiba THNSNF512GCSS 512 GB | No Review |
23'799 |
| Kingmax SMP35 Client 240 GB | |
23'640 |
| OCZ Octane 1 TB | |
22'192 |
| OCZ Octane 512 GB | |
20'492 |
| Intel X25-M Gen2 34nm 160 GB |
|
15'434 |
| Intel X25-M 80 GB | |
6'297 |
IOPS, Random read |
||
| Random read |
Bewertung |
IOPS 4 KByte Block Size |
| OCZ RevoDrive 3 X2 480 GB PCIe-SSD | |
160'832 |
| Samsung 840 Pro 256 GB | |
100'198 |
| Samsung 840 Evo 250 GB mSATA | No Review |
99'476 |
| Plextor M5 Pro 256 GB | No Review |
98'600 |
| Samsung 840 Evo 1 TB | |
96'308 |
| OCZ Vector 256 GB | |
95'614 |
| Toshiba THNSNF512GCSS 512 GB | No Review |
93'251 |
| Samsung 845DCPRO 800 GB | 92'101 | |
| OCZ RevoDrive 3 240 GB | No Review |
91'642 |
| OCZ Vertex 4 512 GB | |
92'288 |
| Samsung 840Evo 120 GB | No Review |
91'598 |
| OCZ Vector 150 240 GB |
|
89'692 |
| OCZ IBIS 240 GB | |
89'630 |
| Corsair Neutron GTX 240 GB | |
89'585 |
| OCZ Vertex 4 256 GB | |
87'654 |
| Crucial M500 480 GB | No Review |
86'622 |
| OCZ Vertex 450 256 GB |
|
84'561 |
| Samsung PM830 SSD 256 GB | |
77'637 |
| OCZ Vertex 460 120 GB | |
77'119 |
| OCZ Agility 4 256 GB | |
63'925 |
| Kingmax SMP35 Client 240 GB | |
57'856 |
| OCZ Deneva 2 200 GB eMLC | |
55'090 |
| Intel SSD 520 180 GB | No Review |
53'477 |
| Intel SSD 520 240 GB | |
51'835 |
| Corsair Force GS 240 GB | |
51'373 |
| Intel SSD 335 Series 240 GB | No Review |
46'647 |
| OCZ Vertex 3 240 GB | |
42'308 |
| Kingston HyperX SSD 240 GB | |
41'917 |
| OCZ Vertex 3.20 240 GB | |
41'813 |
| Samsung PM830 SSD 128 GB | |
37'813 |
| Extrememory XLR8 Express 120 GB | |
37'403 |
| SanDisk Extreme SSD 240 GB | No Review |
36'550 |
| OCZ Agility 3 240 GB | |
35'295 |
| OCZ Octane 1 TB | |
32'403 |
| OCZ Octane 512 GB | |
31'442 |
| Kingston HyperX 3K SSD 120 GB | |
25'822 |
| ADATA XPG mSATA SSD SX300 128 GB | |
25'036 |
| Corsair Force GT 120 GB | |
24'807 |
| Kingston HyperX SSD 120 GB | |
24'473 |
| ADATA S511 SSD 120 GB | |
24'338 |
| SanDisk Extreme SSD 120 GB | |
22'278 |
| Kingston SSDNow V+ 200 90 GB | |
21'443 |
| OCZ RevoDrive Hybrid 120GB SSD, 1TB HDD | |
21'853 |
| Corsair Force 3 120 GB | |
20'718 |
| OCZ Vertex 3.20 120 GB | |
20'438 |
| Intel X25-M Gen2 34nm 160 GB |
|
14'606 |
| ADATA S511 60 GB | |
12'963 |
| OCZ Synapse 64 GB | |
11'980 |
| OCZ RevoDrive X2 480 GB PCIe-SSD | |
10'833 |
| Intel X25-M 80 GB | |
5'349 |
Conclusion
Throughput 1 Thread (QD1)
| 1T Throughput (KB/s) | ||||||||
| 4k | 8k | 16k | 32k | 64k | 128k | 256k | 512k | |
| Seq write | 480'360 | 474'660 | 485'636 | 429'653 | 452'800 | 458'151 | 455'157 | 467'644 |
| Seq read | 390'492 | 361'363 | 382'827 | 360'318 | 408'736 | 422'010 | 380'687 | 411'419 |
| Rand write | 151'232 | 232'014 | 299'295 | 356'542 | 358'237 | 399'006 | 419'287 | 442'418 |
| Rand read | 30'871 | 49'514 | 75'295 | 115'760 | 185'518 | 219'859 | 236'822 | 264'805 |
Throughput 4 Threads (QD4)
| 4T Throughput (KB/s) | ||||||||
| 4k | 8k | 16k | 32k | 64k | 128k | 256k | 512k | |
| Seq write | 475'447 | 484'935 | 495'631 | 484'786 | 486'336 | 487'678 | 497'158 | 488'613 |
| Seq read | 529'173 | 510'930 | 533'589 | 525'159 | 515'890 | 539'283 | 545'806 | 545'903 |
| Rand write | 335'925 | 391'727 | 441'175 | 464'847 | 479'732 | 485'379 | 496'869 | 487'207 |
| Rand read | 116'712 | 194'183 | 258'036 | 344'995 | 413'217 | 488'916 | 541'473 | 522'104 |
Throughput 8 Threads (QD8)
| 8T Throughput (KB/s) | ||||||||
| 4k | 8k | 16k | 32k | 64k | 128k | 256k | 512k | |
| Seq write | 475'722 | 477'939 | 501'242 | 459'821 | 485'821 | 449'344 | 467'573 | 480'227 |
| Seq read | 520'651 | 516'874 | 517'984 | 527'740 | 533'867 | 545'853 | 546'124 | 546'250 |
| Rand write | 333'544 | 387'538 | 428'703 | 461'995 | 473'034 | 478'316 | 479'967 | 486'184 |
| Rand read | 236'968 | 348'870 | 450'032 | 515'935 | 536'506 | 531'879 | 520'237 | 543'066 |
Throughput 16 Threads (QD16)
| 16T Throughput (KB/s) | ||||||||
| 4k | 8k | 16k | 32k | 64k | 128k | 256k | 512k | |
| Seq write | 476'226 | 487'827 | 488'898 | 498'700 | 497'990 | 492'851 | 495'507 | 498'517 |
| Seq read | 519'429 | 484'994 | 533'751 | 537'482 | 542'011 | 546'090 | 545'935 | 542'698 |
| Rand write | 342'247 | 398'585 | 441'364 | 482'823 | 482'179 | 502'659 | 490'642 | 597'376 |
| Rand read | 362'563 | 466'619 | 506'489 | 526'128 | 527'673 | 533'284 | 526'500 | 539'689 |
Throughput 32 Threads (QD32)
| 32T Throughput (KB/s) | ||||||||
| 4k | 8k | 16k | 32k | 64k | 128k | 256k | 512k | |
| Seq write | 483'234 | 497'561 | 500'193 | 535'243 | 511'291 | 508'925 | 500'153 | 501'576 |
| Seq read | 503'550 | 518'727 | 527'877 | 535'559 | 543'893 | 546'068 | 549'013 | 533'151 |
| Rand write | 343'726 | 398'123 | 453'785 | 479'904 | 494'585 | 508'996 | 526'882 | 51'895 |
| Rand read | 368'001 | 464'624 | 504'144 | 525'451 | 529'137 | 544'131 | 544'499 | 535'028 |
Conclusion
Announcement: Despite the circumstance that the rating of a product is based on as many objective facts as possible there are factors which can have an influence on a rating after publication. Every autor may perceive data differently over time whereas one possible reason for example is a deeper background knowledge or understanding of certain processes. Certain unforseen market conditions as well as changes have the potential to render a descision made at a certain point in time obsolete.With the 845DC Series Samsung Electronics have launched their first enterprise grade SSD. Samsung Semiconductor on the other hand is active in that area since a long time, generating know-how that can now be found in the latest drives launched by Samsung Electronics. The most impressive new feature available on the 845DC PRO is undoubtedly the 3D V-NAND Flash memory. Thanks to its cylindrical structure two pressing issues with NAND Flash memory could be addressed at the same time, since the new memory cells use 40nm process technology, accounting for significantly higher endurance, combined with stackability which allows for Die density of up to 128Gbit. This result was achieved by using 24 layers. Samsung is already working on 48 layer as well as 96 layer 3D V-NAND Flash memory. This would then enable NAND Flash dies with 1Tbit density.
In terms of raw performance our test drive was able to score 500 MB/s sequential write and 544 MB/s sequential read throughput. When it comes to 4K IOPS we measured 92'100 IOPS regarding random read and 85'800 regarding random write. In case of sequential write the drive could be a little bit quicker. Regarding random read we see that the SATA-III inferfce is being maxed out with and therefore performance is where it should be. When it comes to random read IOPS performance we measured almost point blank the same Samsung is advertising. On the other hand, when it comes to random write performance we were in for quite a surprise, since Samsung claims this drive can "only" do 51'000 IOPS 4k random write. We measured a whopping 34'800 IOPS more. On another note we also had a look at performance with different queue depths as you can see on page 10. In case of random read performance we see 7'500 IOPS (1'000 less than communicated by Samsung) and when it comes to random write we see 37'750 IOPS (twice as much as communicated by Samsung).
The single most important aspect in case of an enterprise-grade SSD is endurance and this is where the 3D V-NAND Flash memory can show off. Samsung promises up to 10 Drive Writes Per Day for five years, which translates into 14'600 TBW. This is an exceptional value and we are going to run an endurance test on this drive ourselves to see if we can confirm this result.
Last but not least there is the pricing. The Samsung 845DC PRO 400GB comes with an MSRP of 959.99 US-Dollar whereas the samsung 845DC PRO 800GB is recommended to sell for 1'829.99 US-Dollar. Price per gigabyte is therefore somewhere inbetween 2.40 and 2.29 US-Dollar, which is actually in-line with competitors offers.
Should you be looking for an enterprise-grade SSD, which can easily deal with write intense workloads, then we highly recommend considering this drive.
Authors: m.buechel@ocaholic.ch