Key takeaways
- Capacity and price: Compare the same 4TB class and an actual in-stock new offer. A $325.99 MP44 snippet seen in some search results referred to a 2TB variant, while a separate 4TB listing was around $512.99 and out of stock; a search result alone can be misleading.
- Sequential versus game loading: Manufacturer “up to” MB/s figures are controlled tests, not promises of equal load times, frame rates, or real-world copy speeds.
- DRAM versus HMB: The Samsung 990 PRO has dedicated DRAM; the Samsung 990 EVO Plus and Lexar NM790 use Host Memory Buffer. The right choice depends on workloads and current price, not one feature in isolation.
- TBW and warranty: TBW is a rated lifetime write limit tied to the warranty terms, not a promise that a drive fails immediately after the number. Ratings differ across products and capacities.
- Cooling and physical size: A bare PC SSD and a version with an integrated PS5 heatsink can carry different SKUs and prices. Verify both performance and clearance.
- Retailer trust: “Sold by Best Buy,” “sold by Adorama on Best Buy Marketplace,” and “sold by a marketplace merchant” describe different transactions. Read the policy that applies to yours.
Cyber Monday 4TB NVMe deals are worth watching if a growing game library, video projects, or multiple large applications have filled your existing SSD. But Cyber Monday 2026 falls on November 30, and no sale-day offer is verified in this October 28 price check. Instead of labeling early prices as Cyber Monday bargains, this guide compares six real 4TB M.2 NVMe drives, explains exactly what U.S. stores are showing now, and gives you a method for verifying a useful discount when the sale begins.
The short answer: put the WD_BLACK SN7100 4TB on a value watchlist, the Crucial T500 4TB with heatsink on a PS5 shortlist, and the Samsung 990 PRO 4TB on a premium Gen4 shortlist. Those are purchase comparisons based on specifications and dated listings, not a claim that we have benchmarked the drives or located live Cyber Monday promotions.
U.S. 4TB NVMe price snapshots before Cyber Monday
These prices were displayed on U.S. retailer or manufacturer pages reviewed October 28, 2026. The seller, stock state, and model number matter as much as the dollar figure. Pricing can change without notice; the table is not a verified lowest-price history or a guarantee of checkout availability. All prices are in U.S. dollars before applicable tax and shipping.
| Exact 4TB SSD | Observed pre-sale U.S. price | Official maximum sequential read/write | What to verify |
|---|---|---|---|
| WD_BLACK SN7100, WDS400T4X0E | $589.00 via YEAHER, Inc. on Best Buy Marketplace | 7,000 / 6,700 MB/s; PCIe 4.0 | Marketplace warranty, shipping, and seller policy |
| Samsung 990 EVO Plus, MZ-V9S4T0B/AM | $693.59 on a Best Buy listing; selected offer marked sold out | 7,250 / 6,300 MB/s; PCIe 4.0 x4 or 5.0 x2 | Do not treat sold-out pricing as an available deal |
| Lexar NM790, LNM790X004T-RNNNU | $849.99 selected Best Buy listing; other new offers shown from $712.99 | 7,400 / 6,500 MB/s; PCIe 4.0 | Check which seller supplies the lower offer and whether a heatsink is included |
| Crucial T500 with heatsink, CT4000T500SSD5 | $749.99 through Adorama on Best Buy Marketplace | 7,000 / 6,900 MB/s; PCIe 4.0 | Must match the 4TB heatsink SKU; price and return policy are marketplace-specific |
| WD_BLACK SN850X, WDS400T2X0E | $789.99 from Newegg Official on Best Buy Marketplace | 7,300 / 6,600 MB/s; PCIe 4.0 | This exact model ships without a heatsink |
| Samsung 990 PRO, MZ-V9P4T0B/AM | $799.99 sold by Best Buy; Samsung direct displayed $1,099.99 | 7,450 / 6,900 MB/s; PCIe 4.0 | Compare the retailer and manufacturer offer for the identical non-heatsink version |
The apparent cheapest model in this set is a third-party marketplace listing, while one Samsung listing is sold out and the Lexar page offers multiple seller prices. Those are different buying situations. Do not rank them as if all six were guaranteed in-stock items fulfilled directly by Best Buy. Select your shipping ZIP code and review the final seller shown at checkout.
Which 4TB SSDs are worth watching?
WD_BLACK SN7100 4TB: a value-focused PC upgrade
The WDS400T4X0E is an M.2 2280 PCIe 4.0 SSD rated by SanDisk for up to 7,000 MB/s sequential reads and 6,700 MB/s writes in its 4TB version. The manufacturer specifies a five-year limited warranty and 2,400 TBW endurance for the 4TB capacity. Its compact design and efficiency emphasis make it a sensible candidate for a compatible gaming laptop or desktop where a bulky heatsink may not fit.
The October Best Buy Marketplace listing displayed $589.00 from YEAHER, Inc., not a direct Best Buy warehouse offer. A useful Cyber Monday comparison would be a new unit from a reputable seller with a clearly documented U.S. warranty and a lower final price. The drawback is that its attractive starting listing requires an extra seller check. Do not mistake the 1TB/2TB series headline of up to 7,250/6,900 MB/s for the 4TB model: SanDisk rates the 4TB version at 7,000/6,700 MB/s.
Samsung 990 EVO Plus 4TB: power-conscious storage
Samsung identifies MZ-V9S4T0B/AM as a 4TB PCIe 4.0 x4 / PCIe 5.0 x2 M.2 2280 SSD. Official 4TB figures are up to 7,250 MB/s read and 6,300 MB/s write, with 2,400 TBW endurance and a five-year limited warranty. It relies on Host Memory Buffer rather than dedicated DRAM. This is a practical drive to compare for large PC libraries when power efficiency and broad motherboard compatibility matter more than having a DRAM-equipped flagship.
The Best Buy page showed $693.59 but marked the selected offer sold out; its other marketplace listings differed. That price is useful only as a historical snapshot of the listing reviewed, not as a buy-now recommendation. Samsung Magician can help owners inspect health and firmware after installation. Note that a motherboard PCIe 5.0 slot does not magically double this drive\’s published speed: the product supports PCIe 5.0 with two lanes, not four.
Lexar NM790 4TB: high-rated Gen4 speed without onboard DRAM
The Lexar NM790 4TB is a PCIe 4.0 x4 M.2 2280 design rated up to 7,400/6,500 MB/s sequential read/write. Lexar lists 3,000 TBW endurance for the 4TB model and a five-year limited warranty. The drive uses Host Memory Buffer plus SLC caching instead of dedicated DRAM, which can work well for a game library or ordinary content files but should not be confused with a guarantee of peak sustained writes after cache exhaustion.
Best Buy identified part LNM790X004T-RNNNU with a selected $849.99 listing and other new offers advertised from $712.99. Its page can appear to mix a selected seller price with a lower financing amount; inspect the actual offer you select rather than assuming the cheapest number belongs to Best Buy directly. A bare NM790 is not the same SKU as Lexar\’s NM790 with heatsink. For PS5, use a compatible cooling solution as Sony requires.
Crucial T500 4TB with heatsink: a convenient PS5 candidate
The exact heatsink model CT4000T500SSD5 combines 4TB of TLC-based PCIe 4.0 NVMe storage with an integrated cooling structure. Its 4TB specification is up to 7,000 MB/s read and 6,900 MB/s write, with 2,400 TBW endurance and a five-year limited warranty. The heatsink-equipped SKU simplifies one part of a PS5 upgrade, provided the installed dimensions satisfy Sony\’s slot limits.
A common comparison mistake is copying the T500 family\’s 7,400/7,000 MB/s headline from the 2TB variant and applying it to the 4TB drive. Crucial\’s capacity-specific documentation and the Newegg CT4000T500SSD5 listing state 7,000/6,900 MB/s. Best Buy displayed $749.99 from Adorama, so verify who handles returns. If your PC already has a fitted M.2 motherboard heatsink, the non-heatsink CT4000T500SSD3 may be a neater choice when its price is better.
WD_BLACK SN850X 4TB: gaming-oriented Gen4 performance
SanDisk rates the SN850X 4TB at up to 7,300 MB/s reads, 6,600 MB/s writes, and 2,400 TBW. The 4TB WDS400T2X0E is a PCIe 4.0 M.2 2280 model sold without a heatsink; the manufacturer separately identifies WDS400T2XHE as the heatsink version. WD_BLACK Dashboard on Windows provides drive health and gaming features, but those features are not evidence that your games will load at a particular measured speed.
One Best Buy Marketplace listing showed $789.99 sold and shipped by Newegg Official. That is a meaningful pre-sale reference, not a verified Cyber Monday markdown. When comparing this drive with the Crucial T500, include the cost and physical fit of any cooler you need. For PS5 use, SanDisk specifies the heatsink configuration; do not insert this bare board into a PS5 without appropriate supported heat dissipation.
Samsung 990 PRO 4TB: premium Gen4 with dedicated DRAM
The Samsung 990 PRO 4TB, MZ-V9P4T0B/AM, is rated for up to 7,450 MB/s sequential reads and 6,900 MB/s writes. Samsung specifies TLC V-NAND, a dedicated 4GB LPDDR4 DRAM cache for the 4TB drive, 2,400 TBW endurance, and a five-year limited warranty. Buyers who also move large project files or perform heavier mixed workloads may value its controller and DRAM design, although no performance gap in a particular game is claimed here.
Best Buy showed $799.99 sold directly by Best Buy, while Samsung\’s own U.S. page displayed $1,099.99 for the same non-heatsink family and model. This retailer-to-retailer spread is not a Cyber Monday discount, nor does it prove the higher price is a legitimate long-term reference. Compare the identical 4TB SKU, included heatsink, condition, actual seller, and sale-day checkout price before deciding. A 990 PRO with heatsink is a different version to track separately.
How to verify a genuine Cyber Monday 4TB NVMe deal
Cyber Monday is November 30, 2026, following Black Friday on November 27. Stores may run earlier promotions, and the cheapest offer might change several times. Use these checks instead of trusting a large percent-off badge.
- Copy the complete part number, including capacity and heatsink suffix, from the manufacturer and retailer. A 2TB MP44 listing cannot establish a 4TB price, and a 4TB T500 has capacity-specific read/write ratings.
- Record the product price, seller, condition, shipping cost, and date. Compare at least two reputable U.S. sources and inspect price history where available.
- Check that the seller offers a new, manufacturer-warrantied U.S. unit. Marketplace listings and direct-retailer inventory are not interchangeable.
- Calculate cost per terabyte by dividing the exact drive price by four, then add any required heatsink, shipping, and tax before comparing total cost.
- Check motherboard M.2 socket and PCIe lane compatibility, or Sony\’s PS5 expansion rules. Never buy solely from the advertised top sequential speed.
- Recheck the actual cart on November 30. If the price did not materially improve compared with credible recent offers, there is no obligation to buy.
For example, a $589 4TB drive works out to $147.25 per advertised terabyte before tax; a $799.99 drive is about $200 per advertised terabyte. This calculation is only a convenient shopping comparison. It does not measure usable formatted capacity, performance, warranty value, or real gaming loading times.
Compatibility: PC, laptop, and PS5
For a desktop gaming PC
Look for a free M.2 2280 slot that supports NVMe storage; PCIe 4.0 x4 is ideal for these Gen4 drives. A PCIe 3.0 slot may still function with a backwards-compatible PCIe drive, but bandwidth will limit peak sequential rates. Check your motherboard manual for M.2 slot lane-sharing, SATA port disabling, heatsink placement, and whether an adjacent GPU obstructs access.
For a gaming laptop
Confirm the laptop supports a full-length M.2 2280 drive and has adequate physical clearance. Some systems take only shorter 2230 or 2242 drives; others cannot fit double-sided modules or tall factory heatsinks. An efficiency-focused bare 2280 drive may be more practical than a large PS5-style heatsink assembly. Back up important data before replacing the system SSD.
For PS5 storage expansion
Sony supports compatible PCIe Gen4 x4 NVMe M.2 drives from 250GB to 8TB, recommends sequential read speeds of at least 5,500 MB/s, and requires effective heat dissipation. Maximum assembled thickness is 11.25 mm, subject to Sony\’s above-board and below-board limits. A 4TB capacity is allowed, but a brand calling a drive “PS5 compatible” is not a substitute for checking physical dimensions and cooling.
The PS5 formats an installed M.2 drive for its own use, so transfer or back up any files before repurposing a drive. Do not stack an extra heatsink over an integrated one without the manufacturer\’s guidance. Sony\’s official support guide should be your final reference before installation.
What numbers matter beyond the advertised read speed?
- Capacity and price: Compare the same 4TB class and an actual in-stock new offer. A $325.99 MP44 snippet seen in some search results referred to a 2TB variant, while a separate 4TB listing was around $512.99 and out of stock; a search result alone can be misleading.
- Sequential versus game loading: Manufacturer “up to” MB/s figures are controlled tests, not promises of equal load times, frame rates, or real-world copy speeds.
- DRAM versus HMB: The Samsung 990 PRO has dedicated DRAM; the Samsung 990 EVO Plus and Lexar NM790 use Host Memory Buffer. The right choice depends on workloads and current price, not one feature in isolation.
- TBW and warranty: TBW is a rated lifetime write limit tied to the warranty terms, not a promise that a drive fails immediately after the number. Ratings differ across products and capacities.
- Cooling and physical size: A bare PC SSD and a version with an integrated PS5 heatsink can carry different SKUs and prices. Verify both performance and clearance.
- Retailer trust: “Sold by Best Buy,” “sold by Adorama on Best Buy Marketplace,” and “sold by a marketplace merchant” describe different transactions. Read the policy that applies to yours.
Frequently asked questions
Are Cyber Monday 2026 4TB NVMe sales confirmed?
No November 30 promotions were verified during this October 28 research. Some October pages already displayed everyday discounts or marketplace prices. A future Cyber Monday article must be refreshed with the specific active offer, model, seller, and timestamp.
Is a 4TB PCIe 5.0 SSD better than these PCIe 4.0 models?
A compatible PCIe 5.0 x4 SSD may have higher sequential bandwidth, but it generally costs more and needs suitable motherboard and thermal support. Higher theoretical speed does not automatically produce proportional gains in game loading. For the typical game library, an appropriately priced Gen4 4TB drive is a strong baseline.
Can I use a 4TB NVMe SSD as an external USB drive?
Yes, with an enclosure that supports the drive\’s M.2 NVMe form factor, keying, power requirements, and physical thickness. USB connection bandwidth will usually limit transfer speed, and a USB enclosure does not make the internal drive itself a SATA SSD. For PS5, USB storage cannot play PS5 games directly the way compatible internal M.2 expansion storage can.
Should I buy the cheapest 4TB SSD available on Cyber Monday?
Only when it is the correct 4TB NVMe model, new and adequately warrantied, physically compatible with your system, and actually available from a seller you trust. Watch for 4TB SATA products, 2TB capacity variants, open-box units, third-party imports, and very large crossed-out reference prices.
Final buying guidance
For a gaming PC, the WD_BLACK SN7100 is the first lower-price candidate to recheck, provided the marketplace terms hold up. For a PS5 upgrade, the 4TB Crucial T500 with its integrated heatsink reduces uncertainty about sourcing a separate cooler, although Sony\’s size rules still apply. The Samsung 990 PRO is the more premium DRAM-equipped choice when its true checkout price is close to competing flagship Gen4 drives. The Lexar NM790 and SN850X remain useful alternatives if the exact version drops meaningfully; the Samsung 990 EVO Plus should only be counted when its selected offer becomes available.
Bottom line: These are verifiable October 2026 U.S. listing snapshots, not invented Cyber Monday 2026 SSD deals. Save the model numbers and compare them again on November 30. A real bargain has the correct 4TB capacity, compatible cooling, credible seller, and demonstrably worthwhile final price—not merely a seasonal label.
