When you purchase through affiliate text and image links on Seeking Tech, we may earn a commission.

WD_BLACK SN750 vs. WD_BLACK SN850

Western Digital recently released a new NVMe Solid State Drive with the WD_BLACK SN850. So, how does this new internal storage drive stack up against the similar WD_BLACK SN750?

You can find out in this comparing guide between these two SSDs.

Quick Summary

When compared to the WD_BLACK SN750 NVMe SSD, the WD_BLACK SN850 NVMe SSD has much faster maximum sequential reading and maximum sequential writing speeds with the PCIe Gen4 x4 interface.

Otherwise, the two solid state drive have the same endurance, temperature tolerance and warranty coverage period.

If you are interested, you can purchase either of the two internal SSDs on Amazon with the following links:

WD_BLACK SN750 vs. WD_BLACK SN850 Comparison Chart

You can check out the comparison table between the SN750 and SN850 below.

 WD_BLACK SN750 NVMe SSDWD_BLACK SN850 NVMe SSD
Capacity Options250GB SN750 Without Heatsink: WDS250G3X0C

500GB SN750 Without Heatsink: WDS500G3X0C

500GB SN750 With Heatsink: WDS500G3XHC

1TB SN750 Without Heatsink: WDS100T3X0C

1TB SN750 With Heatsink: WDS100T3XHC

2TB SN750 Without Heatsink: WDS200T3X0C

2TB SN750 With Heatsink: WDS200T3XHC
500GB SN850 Without Heatsink: WDS500G1X0E-00AFY0

500GB SN850 With Heatsink: WDS500G1XHE-00AFY0

1TB SN850 Without Heatsink: WDS100T1X0E-00AFY0

1TB SN850 With Heatsink: WDS100T1XHE-00AFY0

2TB SN850 Without Heatsink: WDS200T1X0E-00AFY0

2TB SN850 With Heatsink: WDS200T1XHE-00AFY0
InterfacePCIe Gen3x4PCIe Gen4 x4
Backwards Compatible InterfacesPCIe Gen3 x2

PCIe Gen3 x1

PCIe Gen2 x4

PCIe Gen2 x2

PCIe Gen2 x1
PCIe Gen3 x2

PCIe Gen3 x1

PCIe Gen2 x4

PCIe Gen2 x2

PCIe Gen2 x1
Maximum Sequential Read Speed250GB WD BLACK SN750 Without Heatsink: Up to 3100 MB per second

500GB WD BLACK SN750 Without Heatsink: Up to 3430 MB per second

500GB WD BLACK SN750 With Heatsink: Up to 3430 MB per second

1TB WD BLACK SN750 Without Heatsink: Up to 3430 MB per second

1TB WD BLACK SN750 With Heatsink: Up to 3470 MB per second

2TB WD BLACK SN750 Without Heatsink: Up to 3400 MB per second

2TB WD BLACK SN750 With Heatsink: Up to 3400 MB per second
500 GB WD Black SN850 Without Heatsink: Up to 7000 MB per second

500 GB WD Black SN850 With Heatsink: Up to 7000 MB per second

1TB WD Black SN850 Without Heatsink: Up to 7000 MB per second

1TB WD Black SN850 With Heatsink: Up to 7000 MB per second

2TB WD Black SN850 Without Heatsink: Up to 7000 MB per second

2TB WD Black SN850 With Heatsink: Up to 7000 MB per second
Maximum Sequential Write Speed250GB WD BLACK SN750 Without Heatsink: Up to 1600 MB per second

500GB WD BLACK SN750 Without Heatsink: Up to 2600 MB per second

500GB WD BLACK SN750 With Heatsink: Up to 2600 MB per second

1TB WD BLACK SN750 Without Heatsink: Up to 3000 MB per second

1TB WD BLACK SN750 With Heatsink: Up to 3000 MB per second

2TB WD BLACK SN750 Without Heatsink: Up to 2900 MB per second

2TB WD BLACK SN750 With Heatsink: Up to 2900 MB per second
500 GB WD Black SN850 Without Heatsink: Up to 4100 MB per second

500 GB WD Black SN850 With Heatsink: Up to 4100 MB per second

1 TB WD Black SN850 Without Heatsink: Up to 5300 MB per second

1 TB WD Black SN850 With Heatsink: Up to 5300 MB per second

2T B WD Black SN850 Without Heatsink: Up to 5100 MB per second

2T B WD Black SN850 With Heatsink: Up to 5100 MB per second
WD BLACK SSD DashboardSupportedSupported
Endurance250GB WD BLACK SN750 Without Heatsink: 200 TBW

500GB WD BLACK SN750 Without Heatsink: 300 TBW

500GB WD BLACK SN750 With Heatsink: 300 TBW

1TB WD BLACK SN750 Without Heatsink: 600 TBW

1TB WD BLACK SN750 With Heatsink: 600 TBW

2TB WD BLACK SN750 Without Heatsink: 1200 TBW

2TB WD BLACK SN750 With Heatsink: 1200 TBW
500 GB WD Black SN850 Without Heatsink: 300 TBW

500 GB WD Black SN850 With Heatsink: 300 TBW

1 TB WD Black SN850 Without Heatsink: 600 TBW

1 TB WD Black SN850 With Heatsink: 600 TBW

2TB WD Black SN850 Without Heatsink: 1200 TBW

2TB WD Black SN850 With Heatsink: 1200 TBW
Operating Temperature32°F to 158°F (or 0°C to 70°C)32°F to 158°F (or 0°C to 70°C)
Storage Temperature-67°F to 185°F (or -55°C to 85°C)-67°F to 185°F (or -55°C to 85°C)
Warranty5 years or sooner if TBW limits are reached5 years or sooner if TBW limits are reached
PricingCheck price on Amazon.Check price on Amazon.

Capacity Options

The WD_BLACK SN750 is available in the following capacity options: 250 GB, 500 GB, 1 TB and 2 TB. The 500 GB, 1 TB and 2 TB versions also have another variation that comes pre-installed with a heatsink.

With the new WD_BLACK SN850, you can pick between the 500 GB, 1 TB or 2 TB options. All three capacities also include a variant with a pre-installed heatsink.

You can find the model numbers for all versions of each solid state drive below:

  • 250GB SN750 Without Heatsink: WDS250G3X0C
  • 500GB SN750 Without Heatsink: WDS500G3X0C
  • 500GB SN750 With Heatsink: WDS500G3XHC
  • 1TB SN750 Without Heatsink: WDS100T3X0C
  • 1TB SN750 With Heatsink: WDS100T3XHC
  • 2TB SN750 Without Heatsink: WDS200T3X0C
  • 2TB SN750 With Heatsink: WDS200T3XHC
  • 500GB SN850 Without Heatsink: WDS500G1X0E-00AFY0
  • 500GB SN850 With Heatsink: WDS500G1XHE-00AFY0
  • 1TB SN850 Without Heatsink: WDS100T1X0E-00AFY0
  • 1TB SN850 With Heatsink: WDS100T1XHE-00AFY0
  • 2TB SN850 Without Heatsink: WDS200T1X0E-00AFY0
  • 2TB SN850 With Heatsink: WDS200T1XHE-00AFY0

Interface

The Western Digital Black SN750 uses the PCIe Gen3x4 interface while the Western Digital Black SN850 uses the PCIe Gen4 x4 interface, which provides higher bandwidth.

Backwards Compatible Interfaces

Both of the internal SSDs in this versus guide are also backwards compatible with the following PCIe versions:

  • PCIe Gen3 x2
  • PCIe Gen3 x1
  • PCIe Gen2 x4
  • PCIe Gen2 x2
  • PCIe Gen2 x1

Maximum Sequential Read Speed

When you compare the same capacities, the WD_BLACK SN850 has a big advantage over the WD_BLACK SN750 when it comes to maximum sequential reading speeds.

The 500 GB version of the SN850 is 3570 MB per second faster than the 500 GB version of the SN750 when it comes to the top sequential reads. The 1 TB SN850 SSD is also 3570 MB per second faster than the 1 TB SN750 with no heatsink and 3530 MB faster than the 1 TB SN750 with heatsink. Last but not least, the 2 TB SN850 is 3600 MB per second faster than the 2 TB SN750.

You can take a look at the maximum sequential read specifications below:

  • 250GB WD BLACK SN750 Without Heatsink: Up to 3100 MB per second
  • 500GB WD BLACK SN750 Without Heatsink: Up to 3430 MB per second
  • 500GB WD BLACK SN750 With Heatsink: Up to 3430 MB per second
  • 1TB WD BLACK SN750 Without Heatsink: Up to 3430 MB per second
  • 1TB WD BLACK SN750 With Heatsink: Up to 3470 MB per second
  • 2TB WD BLACK SN750 Without Heatsink: Up to 3400 MB per second
  • 2TB WD BLACK SN750 With Heatsink: Up to 3400 MB per second
  • 500 GB WD Black SN850 Without Heatsink: Up to 7000 MB per second
  • 500 GB WD Black SN850 With Heatsink: Up to 7000 MB per second
  • 1TB WD Black SN850 Without Heatsink: Up to 7000 MB per second
  • 1TB WD Black SN850 With Heatsink: Up to 7000 MB per second
  • 2TB WD Black SN850 Without Heatsink: Up to 7000 MB per second
  • 2TB WD Black SN850 With Heatsink: Up to 7000 MB per second

Maximum Sequential Write Speed

As for maximum sequential writing speeds, the Western Digital Black SN850 SSDs are also a lot faster than the capacity equivalents of the Western Digital Black SN750 SSDs.

The 500 GB SN850 is 1500 MB per second faster than the 500 GB SN750 when it comes to the max sequential writes. The 1 TB version of the SN850 is also 2300 MB per second faster than the 1 TB version of the SN750. Finally, the 2 TB SN850 SSD is 2200 MB per second faster than the 2 TB SN750 SSD.

You can take a look at the maximum sequential write specs below:

  • 250GB WD BLACK SN750 Without Heatsink: Up to 1600 MB per second
  • 500GB WD BLACK SN750 Without Heatsink: Up to 2600 MB per second
  • 500GB WD BLACK SN750 With Heatsink: Up to 2600 MB per second
  • 1TB WD BLACK SN750 Without Heatsink: Up to 3000 MB per second
  • 1TB WD BLACK SN750 With Heatsink: Up to 3000 MB per second
  • 2TB WD BLACK SN750 Without Heatsink: Up to 2900 MB per second
  • 2TB WD BLACK SN750 With Heatsink: Up to 2900 MB per second
  • 500 GB WD Black SN850 Without Heatsink: Up to 4100 MB per second
  • 500 GB WD Black SN850 With Heatsink: Up to 4100 MB per second
  • 1 TB WD Black SN850 Without Heatsink: Up to 5300 MB per second
  • 1 TB WD Black SN850 With Heatsink: Up to 5300 MB per second
  • 2T B WD Black SN850 Without Heatsink: Up to 5100 MB per second
  • 2T B WD Black SN850 With Heatsink: Up to 5100 MB per second

WD BLACK SSD Dashboard

Both products use the WD BLACK SSD Dashboard, a software that lets you monitor the health of the solid state drive in addition to being able to optimize performance by using the gaming mode.

Endurance

TBW (or Terabytes Written) measures the endurance of a solid state drive in terms of the amount of data that can be written on it during its lifetime. When you compare the same capacity options, the WD_BLACK SN750 and WD_BLACK SN850 have the same endurance specifications, which you can find below:

  • 250GB WD BLACK SN750 Without Heatsink: 200 TBW
  • 500GB WD BLACK SN750 Without Heatsink: 300 TBW
  • 500GB WD BLACK SN750 With Heatsink: 300 TBW
  • 1TB WD BLACK SN750 Without Heatsink: 600 TBW
  • 1TB WD BLACK SN750 With Heatsink: 600 TBW
  • 2TB WD BLACK SN750 Without Heatsink: 1200 TBW
  • 2TB WD BLACK SN750 With Heatsink: 1200 TBW
  • 500 GB WD Black SN850 Without Heatsink: 300 TBW
  • 500 GB WD Black SN850 With Heatsink: 300 TBW
  • 1 TB WD Black SN850 Without Heatsink: 600 TBW
  • 1 TB WD Black SN850 With Heatsink: 600 TBW
  • 2TB WD Black SN850 Without Heatsink: 1200 TBW
  • 2TB WD Black SN850 With Heatsink: 1200 TBW

Operating Temperature

The two storage drives in this comparison have the same recommend operating temperature range of 32°F to 158°F (or 0°C to 70°C).

Storage Temperature

Both Western Digital products also have an identical recommended storage temperature range -67°F to 185°F (or -55°C to 85°C).

Warranty

The WD_BLACK SN750 and WD_BLACK SN850 have the same warranty coverage of 5 years or sooner if the aforementioned TBW limits are reached.

Resources: