Samsung 990 Pro 4TB SSD Arrives Next Month for $345

Samsung 990 Pro 4TB
(Image credit: Samsung)

Two weeks ago, Samsung announced it would soon deliver a 4TB version of its popular 990 Pro SSD, which is among the best SSDs on the market. Samsung teased the existence of the SSD but it didn’t provide any guidance on pricing. 

Today, Samsung confirmed that the 990 Pro 4TB carries an MSRP of $344.99 for the bare drive (MZ-V9P4T0BW), or $354.99 if you opt for the version with an integrated heatsink (MZ-V9P4T0CW). That is quite a hefty premium over the less capacious versions of the SSD. The 990 Pro 2TB with a heatsink (MZ-V9P2T0CW) currently sells for just $149 on Amazon. However, we’re likely to see prices for the 990 Pro 4TB slowly drop as availability expands in the marketplace (for example, the WD_BLACK 4TB SN850X has a street price of around $300).

Performance specs for the 990 Pro 4TB are nearly identical to its 1TB and 2TB siblings, meaning that it offers sequential reads of 7,400 MB/s and sequential writes of 6,900 MB/s. Random write performance remains the same as the 2TB SKU at 1,550,000 IOPS, while random read performance increases from 1,400,000 IOPS to 1,600,000 IOPS. Additionally, endurance doubles from 1,200 TBW on the 990 Pro 2TB to 2,400 TBW for the 990 Pro 4TB. While Samsung is still using 176-layer TLC NAND with the 990 Pro, the size of the onboard LPDDR4 cache has doubled to 4GB. 

Samsung 990 Pro Specifications

Swipe to scroll horizontally
ModelPricingCapacitySequential Read (MB/s)Sequential Write (MB/s)Random Read (IOPS)Random Write (IOPS)Cache Memory (LPPDR4)Endurance (TBW)
MZ-V9P4T0CW / MZ-V9P4T0BW$354.99 / $344.994TB7,4506,9001,600,0001,550,0004GB2,400
MZ-V9P2T0CW / MZ-V9P2T0BW$149.99 / $169.992TB7,4506,9001,400,0001,550,0002GB1,200
MZ-V9P1T0CW / MZ-V9P1T0BW$84.99 / $89.991TB7,4506,9001,200,0001,550,0001GB600

The 990 Pro 4TB is still PCIe 4.0-based, so it doesn’t offer the maximum performance potential of today’s PCIe 5.0 SSDs. However, among the PCIe 4.0 competition, the 990 Pro 4TB should remain among the fastest available. And its 2TB counterpart is already our top pick for the best overall SSD.

We may think of high-performance SSDs like the 990 Pro 4TB as being primarily for the PC domain, but it also makes a perfect companion for Sony’s PlayStation 5. Adding a 4TB PCIe 4.0 SSD via the one available storage expansion slot dramatically improves upon the system’s internal 825GB SSD (of which only 667GB is available for games). With some of today’s games easily taking up 100GB of storage space or more, 4TB provides a lot of headroom.

According to Samsung, the 990 Pro (MZ-V9P4T0BW and MZ-V9P2T0CW) will be available directly from and at “select retailers” starting in October. Hopefully we’ll start seeing some incredible discounts on the SSDs in time for Black Friday.

Brandon Hill

Brandon Hill is a senior editor at Tom's Hardware. He has written about PC and Mac tech since the late 1990s with bylines at AnandTech, DailyTech, and Hot Hardware. When he is not consuming copious amounts of tech news, he can be found enjoying the NC mountains or the beach with his wife and two sons.

  • USAFRet
    Tom Sunday said:
    I would love to own a Samsung 990 Pro 4TB. WOW…but for $345? But for me and for the time being any 4TB SSD would have to serve as a dedicated ‘back-up drive' and with that the Samsung T7 4TB, portable at $220, I see to be a better choice. I also question if I could really feel and come to appreciate the speed of sequential reads around 7,400 MB/s compared to my older 980 PRO SSDs which I deem to be all the speed I will ever need.
    Changing from a 980 Pro to 990 Pro, no.

    If you were building up a new system and needed that 4TB, maybe.
  • lemongrassgarlic
    When used as a second drive , 0,5 W idling is not nothing in a laptop on batteries.
  • petar
    I have posted a benchmark here, not really impressed by these drives we bought at our company.

    Kingston, Kiokxia awesome. WD Black similar and cheaper.

    I am kind of tired discovering that my benchmark is far away from published benchmarks, for me these drives once I got them left me sad. Nothing special. Should have bought something better.