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Samsung 850 EVO 4TB SATA III SSD Review

By: Jon Coulter | SSDs in Storage | Posted: Sep 26, 2016 1:00 pm
TweakTown Rating: 99%Manufacturer: Samsung

Final Thoughts




As we touched on earlier, the 4TB 850 EVO is proof that the SATA III interface has not been fully exploited as we so often hear. Samsung found a way to take what we feel is the best performing line of SATA III SSDs, their EVO Series, and make it even faster. Samsung took what was the EVO's only weak point, heavy workloads, and not only improved its performance in that area but delivered a solution that was able to set new lab records for heavy workload performance. Most see the new 4TB capacity point as the capacity king, which it is, but it is so much more because it is also the performance king.



The hallmark of a great performing SSD is typically exemplified by its low queue random performance. Samsung is the only SSD vendor that lists their SSDs 4K QD1 performance. And that's because Samsung SSDs have no equal in this performance metric. It is very common for Samsung SATA SSDs to even outperform non-Samsung NVMe SSDs when reading random data at low queue depths. This is why for the most part, Samsung SATA SSDs deliver an unrivaled SSD experience; NVMe SSDs included.


Samsung's stated numbers of up to 10,000 IOPS 4K QD1 random read performance and up to 40,000 4K QD1 random write performance are lofty numbers that most SSDs cannot achieve. We have to look no further than our MOP testing to see that under ideal conditions, the 4TB 850 EVO is capable of an astounding 14,000/51,000 IOPS 4K QD1 random performance.


So, what about the steep price of owning a 4TB 850 EVO? This drive is not for everyone and was never intended to be. The 4TB 850 EVO is for those of us that demand the very best. The total price tag for this behemoth may be out of reach for some, but at .37 cents per gigabyte, it is in line with most tier-1 SSDs on the market. Like anything else in life, you get what you pay for. We believe the cost of owning the 4TB 850 EVO is money well spent. After all, you can hold your entire Steam library on a single SSD for the first time.


The SSD experience that the 4TB 850 EVO delivers is second to none. Realistically, it is as good as most NVMe SSDs on the market for the reasons we touched on. Lightning boot speed, instantaneous response, multi-tasking, heavy workloads, moderate workloads, synthetic performance, and capacity all rolled into one. Samsung's 4TB 850 EVO is the ultimate SATA SSD bar none.


Samsung's 850 EVO 4TB is definitely TweakTown recommended.




  • Capacity
  • Synthetic Performance
  • Moderate Workloads
  • Heavy Workloads
  • Five-Year Warranty




  • Endurance

Product Summary Breakdown

TweakTown award
Quality including Design and Build100%
General Features100%
Bundle and Packaging98%
Value for Money95%
Overall TweakTown Rating99%

The Bottom Line: Samsung's 4TB 850 EVO is the best of the best. It is by far the fastest SATA SSD we've ever tested. The new 4TB 850 EVO sets the standard by which all SATA SSDs will be measured.

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