Samsung 850 evo iops: Samsung 850 EVO | Consumer SSD | Specs & Features

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Introduction, The Drives & The TestInside The Drives & Updated TurboWriteThree Bits and Three Dimensions: What’s the Deal?Endurance: Close to Planar MLC NANDPerformance Consistency & TRIM ValidationAnandTech Storage Bench 2013AnandTech Storage Bench 2011Random & Sequential PerformancePerformance vs. Transfer SizePower ConsumptionFinal Words

Samsung hasn’t stopped impressing me in the SSD space. The early Samsung SSDs weren’t very good, but ever since the introduction of the SSD 830 Samsung has been doing a brilliant job and has been setting the bar for performance, cost and reliability. The SSD 840 specifically showed what properly executed vertical integration can really do as Samsung was the first manufacturer to utilize TLC NAND in a client SSD. It took a whopping two years before the rest of the industry was able to follow Samsung’s footsteps and even today SanDisk is still the only other vendor with a TLC SSD.

While getting an early lead on TLC NAND was a major win for Samsung and a showcase of its engineering talent, the real bombshell was dropped a year later at Flash Memory Summit 2013. For years it had been known that traditional NAND scaling would soon come to an end and that there is an alternate way of scaling in the horizon. As the first manufacturer in the world, Samsung announced that it had begun the mass production of its 128Gbit 24-layer 3D V-NAND.

It took another year before V-NAND found its way into a retail product, but it acquitted all of its promises when it finally did. The SSD 850 Pro is hands down the fastest SATA SSD on the market and it’s also backed up by an industry-leading warranty and endurance rating – all which is thanks to V-NAND.

The SSD 850 Pro excels in performance and features, but given its high-end focus it’s not a cost efficient solution for the majority of consumers. At this year’s Flash Memory Summit, Samsung teased us about an upcoming TLC V-NAND SSD, which would solve the cost issue while still providing all the benefits of 3D NAND technology. The waiting is now over and the drive is (unsurprisingly) called the SSD 850 EVO.

In terms of capacities the 850 EVO lineup is similar to the 840 EVO. The only difference is that the 850 EVO drops the 750GB model, which from what I’ve heard wasn’t a very popular model and to be honest it was kind of an odd middle capacity that generally wasn’t price competitive against the 500GB and 1TB models. Initially I was told that the 850 EVO would come in 2TB capacity as well, but later on Samsung opted against it due to the limited demand. Samsung has always been after the high volume markets, so I see the logic behind the decision not to release a 2TB model just yet as its price would drive most people away. The good news, however, is that Samsung has the technology to bring a 2TB drive to the market.

Samsung SSD 850 EVO Specifications
Capacity	120GB	250GB	500GB	1TB
Controller	Samsung MGX			Samsung MEX
NAND	Samsung 128Gbit 40nm TLC V-NAND
DRAM (LPDDR2)	256MB	512MB		1GB
Sequential Read	540MB/s	540MB/s	540MB/s	540MB/s
Sequential Write	520MB/s	520MB/s	520MB/s	520MB/s
4KB Random Read	94K IOPS	97K IOPS	98K IOPS	98K IOPS
4KB Random Write	88K IOPS	88K IOPS	90K IOPS	90K IOPS
DevSleep Power Consumption	2mW	2mW	2mW	4mW
Slumber Power Consumption	50mW
Active Power Consumption (Read/Write)	Max 3. 7W / 4.4W
Encryption	AES-256, TCG Opal 2.0, IEEE-1667 (eDrive)
Endurance	75TB (41GB/day)		150TB (82GB/day)
Warranty	Five years

The first hint of the capability of TLC V-NAND is the endurance ratings. The 120GB and 250GB capacities are rated at 75TB, which is fairly average, but the 500GB and 1TB models match up with the 850 Pro with their 150TB write endurance. I’ll be talking a bit more about the NAND and testing its P/E cycle rating on the following pages, but it’s clear that 3D NAND technology is taking TLC NAND to a whole new level in terms of endurance. Thanks to the more durable NAND, Samsung is also upping the warranty from three to five years, which is always a welcome upgrade and I think too many vendors have been fixated on three-year warranties even though NAND endurance has never been the limiting factor.

The new MGX controller in 120GB 850 EVO

In addition to the NAND, the 850 EVO sees an evolution in the controller. The 120GB, 250GB and 500GB models now come with a newer generation MGX controller, although unfortunately I have very few details as Samsung couldn’t get me the information about the new controller ahead of the embargo lift. I’ve heard the MGX is a dual core design, whereas the MEX in the 1TB model (and 840 EVO & 850 Pro) features three ARM Cortex R4 cores. The reason behind the change is increased power efficiency and supposedly the third core isn’t needed with the smaller capacities as there are less pages/blocks to track and thus NAND management requires less processing power. I’m guessing that the MGX is also manufactured with a smaller process node and the two cores run at a higher clock speed, but for now I don’t have any concrete information backing that up.

The 850 EVO also features the common Samsung feature set. DevSleep, hardware-accelerated encryption (TCG Opal 2.0 & IEEE-1667) and RAPID are all supported. With the 850 Pro Samsung introduced RAPID 2.0 that upped the maximum RAM allocation to 4GB (with 16GB or more RAM installed in the system) and as one would expect the 850 EVO supports the updated version of RAPID. In fact, with the release of Magician 4.5 (included on the CD that is found in the retail package), RAPID sees an update to 2.1 version, although this is merely an incremental update with enhanced error handling and fixed compatibility issues with Intel’s Rapid Storage Technology drivers.

Pricing

The always-so-important question is the price. All modern SSDs are relatively good (especially when compared against what we had three years ago), so for the majority of buyers the key factor is the price. Lately we have seen some very aggressive pricing from the likes of Crucial and SanDisk, and I was expecting that the 850 EVO would be Samsung’s answer to that.

Unfortunately, the MSRPs at least are fairly high. I was told that the higher production costs of V-NAND necessitate the higher prices, which is why Samsung can’t go directly against the MX100 and Ultra II, but in return Samsung offers a longer warranty, higher endurance and better performance (we will find out about the last one soon). That said, MSRPs have never been great indicators of final street prices and we may see the 850 EVO become more competitive eventually.

Test Systems

For AnandTech Storage Benches, performance consistency, random and sequential performance, performance vs transfer size and load power consumption we use the following system:

CPU	Intel Core i5-2500K running at 3.3GHz (Turbo & EIST enabled)
Motherboard	ASRock Z68 Pro3
Chipset	Intel Z68
Chipset Drivers	Intel 9. 1.1.1015 + Intel RST 10.2
Memory	G.Skill RipjawsX DDR3-1600 4 x 8GB (9-9-9-24)
Video Card	Palit GeForce GTX 770 JetStream 2GB GDDR5 (1150MHz core clock; 3505MHz GDDR5 effective)
Video Drivers	NVIDIA GeForce 332.21 WHQL
Desktop Resolution	1920 x 1080
OS	Windows 7 x64

Thanks to G.Skill for the RipjawsX 32GB DDR3 DRAM kit

For slumber power testing we used a different system:

CPU	Intel Core i7-4770K running at 3. 3GHz (Turbo & EIST enabled, C-states disabled)
Motherboard	ASUS Z87 Deluxe (BIOS 1707)
Chipset	Intel Z87
Chipset Drivers	Intel 9.4.0.1026 + Intel RST 12.9
Memory	Corsair Vengeance DDR3-1866 2x8GB (9-10-9-27 2T)
Graphics	Intel HD Graphics 4600
Graphics Drivers	15.33.8.64.3345
Desktop Resolution	1920 x 1080
OS	Windows 7 x64

• Thanks to Intel for the Core i7-4770K CPU
• Thanks to ASUS for the Z87 Deluxe motherboard
• Thanks to Corsair for the Vengeance 16GB DDR3-1866 DRAM kit, RM750 power supply, Hydro H60 CPU cooler and Carbide 330R case

Inside The Drives & Updated TurboWrite
Introduction, The Drives & The TestInside The Drives & Updated TurboWriteThree Bits and Three Dimensions: What’s the Deal?Endurance: Close to Planar MLC NANDPerformance Consistency & TRIM ValidationAnandTech Storage Bench 2013AnandTech Storage Bench 2011Random & Sequential PerformancePerformance vs. Transfer SizePower ConsumptionFinal Words

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Description

Samsung 850 SSD is perfect for even the most demanding users. With it, reliable storage of all your exploits captured on video is guaranteed. The ultra-thin device has a memory capacity of 250 GB, which will also allow you to store your entire home archive on it, including digitized photos, home videos and a large collection of your favorite movies and music. Work your PC or laptop with a Samsung 850 EVO SSD will be many times faster. The drive itself has technical characteristics that contribute to instant reading of files of any size and format — 540 MB / s, and writes — 520 MB / s. The capacity will fit almost all computers and there will be no connection problems. You can take it with you even on a business trip, even to work, even on vacation.

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Samsung 850 Evo 500GB 2.5″ vs Samsung 860 Evo 250GB 2.5″: What is the difference?

SSD drive type.

SSD cache

Unknown. Help us offer a price. (Samsung 850 Evo 500GB 2.5″)

DRAM drive

DRAM-type SSDs/SSDs use high-speed RAM as a buffer/cache. Performance is faster than non-DRAM SSDs that use more slow NAND flash memory or system RAM (HMB).0003

This is an NVMe SSD

✖Samsung 850 Evo 500GB 2.5″

✖Samsung 860 Evo 250GB 2.5″

NVMe SSDs use the PCIe interface, which has a higher bandwidth than the SATA interface. This results in much faster read/write speeds compared to SSDs using the SATA interface.

built-in memory

Built-in memory is the built-in space for storing system data, applications, and user data in the device. With more internal storage, you can store more files and apps on your device.

Storage type SSD

Unknown. Help us offer a price. (Samsung 850 Evo 500GB 2.5″)

The storage type determines how many bits of data are written to each memory cell. These storage types include SLC (one bit per cell), MLC (two bits per cell) and TLC (three bits per cell)

PCI Express (PCIe) version

Unknown Please help us with a quote (Samsung 850 Evo 500GB 2.5″)

Unknown. Help us offer a price. (Samsung 860 Evo 250GB 2.5″)

PCI Express (PCIe) is a high speed expansion card standard that is used to connect a computer to its peripherals. Newer versions support higher bandwidth and provide higher performance.

controller channels

Unknown Please help us with a quote (Samsung 850 Evo 500GB 2.