Samsung 9100 Pro 4TB vs WD Black SN850X 4TB Black Friday2026

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The Samsung 9100 PRO 4TB vs WD_BLACK SN850X 4TB Black Friday 2026 choice comes down to speed, compatibility and the kind of upgrade you need. The Samsung 9100 PRO 4TB uses PCIe 5.0 and lists sequential reads up to 14,800 MB/s. The WD_BLACK SN850X 4TB uses PCIe 4.0 and lists reads up to 7,300 MB/s. Both offer 4TB of storage, but those interface and performance differences affect which system gets the best fit.

I researched and compared specs, reviews and owner feedback to make this guide useful for desktop builders, laptop owners and console players. My pick for most people is the WD_BLACK SN850X 4TB when a PCIe 4.0 drive suits the system. Choose the Samsung 9100 PRO 4TB for compatible PCIe 5.0 hardware and demanding large-file work. The seven picks below cover both approaches, with buying advice for Black Friday 2026.

How We Picked

• Compared published sequential read and write specifications, noting that real-world speed varies by system, workload and cooling.
• Checked interface generation and common compatibility needs for desktop motherboards, laptops and consoles.
• Considered capacity, endurance ratings and warranty terms where manufacturers publish them.
• Reviewed product features, customer feedback themes and the practical trade-offs between premium and value-oriented SSDs.
• Prioritized clearly differentiated 4TB options and noted when a heatsink or compatible PCIe slot is important.

Comparison Table

Product	Best for	Sequential read	Sequential write	Interface
Samsung 9100 PRO 4TB	PCIe 5.0 desktops	Up to 14,800 MB/s	Up to 13,400 MB/s	PCIe 5.0 x4
WD_BLACK SN850X 4TB	PCIe 4.0 gaming	Up to 7,300 MB/s	Up to 6,600 MB/s	PCIe 4.0 x4
Samsung 990 PRO 4TB	Premium PCIe 4.0	Up to 7,450 MB/s	Up to 6,900 MB/s	PCIe 4.0 x4
Crucial T705 4TB	PCIe 5.0 creative work	Up to 14,500 MB/s	Up to 12,700 MB/s	PCIe 5.0 x4
Crucial T500 4TB	Mixed PCIe 4.0 use	Up to 7,400 MB/s	Up to 7,000 MB/s	PCIe 4.0 x4
Kingston FURY Renegade G5 4TB	Advanced PCIe 5.0 builds	Up to 14,800 MB/s	Up to 14,000 MB/s	PCIe 5.0 x4
Seagate FireCuda 530R 4TB	High-write PCIe 4.0 use	Up to 7,400 MB/s	Up to 7,000 MB/s	PCIe 4.0 x4

Best Picks Reviewed

#1

Samsung 9100 PRO 4TB

The Samsung 9100 PRO 4TB is the best premium PCIe 5.0 SSD for desktop builders who need rapid storage, with sequential reads up to 14,800 MB/s.

Best for: PCIe 5.0 desktops and demanding file transfers

Capacity

4TB

Interface

PCIe 5.0 x4, NVMe

Sequential read

Up to 14,800 MB/s

Sequential write

Up to 13,400 MB/s

Warranty

5 years

Pros

• High sequential speed for compatible PCIe 5.0 systems
• Large 4TB capacity
• Useful for demanding transfers and heavy workloads

Cons

• Requires a compatible PCIe 5.0 slot to reach its rated speed
• Plan for adequate cooling in a high-performance build

Is the Samsung 9100 PRO 4TB worth buying on Black Friday 2026?

The Samsung 9100 PRO 4TB is worth considering for a PCIe 5.0 desktop that benefits from fast transfers and 4TB of space. The Samsung 9100 PRO 4TB's rated sequential read speed reaches 14,800 MB/s, while compatibility and cooling remain essential.

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#2 · Top pick

WD_BLACK SN850X 4TB

The WD_BLACK SN850X 4TB is the best PCIe 4.0 all-rounder for gamers and everyday desktop users, with sequential reads up to 7,300 MB/s.

Best for: PCIe 4.0 gaming and general desktop use

Capacity

4TB

Interface

PCIe 4.0 x4, NVMe

Sequential read

Up to 7,300 MB/s

Sequential write

Up to 6,600 MB/s

Warranty

5 years

Pros

• Strong rated speed for a PCIe 4.0 SSD
• 4TB capacity suits large game libraries
• Broad desktop compatibility with an M.2 NVMe slot

Cons

• Slower rated sequential reads than PCIe 5.0 alternatives
• Check whether the system needs a separate heatsink

Is the WD_BLACK SN850X 4TB worth buying on Black Friday 2026?

The WD_BLACK SN850X 4TB is a good Black Friday 2026 pick for a PCIe 4.0 gaming or desktop upgrade. The WD_BLACK SN850X 4TB combines 4TB of capacity with rated reads up to 7,300 MB/s, without requiring a PCIe 5.0 platform.

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#3

Samsung 990 PRO 4TB

The Samsung 990 PRO 4TB is the best premium PCIe 4.0 SSD for fast everyday storage, with sequential reads up to 7,450 MB/s.

Best for: High-performance PCIe 4.0 desktops and laptops

Capacity

4TB

Interface

PCIe 4.0 x4, NVMe

Sequential read

Up to 7,450 MB/s

Sequential write

Up to 6,900 MB/s

Warranty

5 years

Pros

• Fast sequential specifications for PCIe 4.0
• 4TB capacity for games, media and project files
• A versatile choice for compatible desktops and laptops

Cons

• Does not use PCIe 5.0 bandwidth
• Laptop owners should check M.2 size and thermal clearance

Is the Samsung 990 PRO 4TB worth buying on Black Friday 2026?

The Samsung 990 PRO 4TB is a strong choice for a PCIe 4.0 system that needs a high-capacity, fast NVMe drive. The Samsung 990 PRO 4TB's rated read speed reaches 7,450 MB/s, and its 4TB capacity supports large files and game libraries.

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#4

Crucial T705 4TB

The Crucial T705 4TB is the best high-speed PCIe 5.0 alternative for creative desktop users, with sequential reads up to 14,500 MB/s.

Best for: PCIe 5.0 desktops and large creative projects

Capacity

4TB

Interface

PCIe 5.0 x4, NVMe

Sequential read

Up to 14,500 MB/s

Sequential write

Up to 12,700 MB/s

Warranty

5 years

Pros

• Fast rated transfers for compatible PCIe 5.0 hardware
• Plenty of room for large media libraries
• A useful comparison point against the Samsung 9100 PRO 4TB

Cons

• Needs a compatible PCIe 5.0 slot for top speeds
• High-speed operation calls for a suitable cooling solution

Is the Crucial T705 4TB worth buying on Black Friday 2026?

The Crucial T705 4TB is worth a look for compatible PCIe 5.0 desktops handling large project files. The Crucial T705 4TB's published sequential reads reach 14,500 MB/s, and the 4TB capacity leaves ample room for active work and stored media.

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#5

Crucial T500 4TB

The Crucial T500 4TB is the best balanced PCIe 4.0 upgrade for mixed workloads, with sequential reads up to 7,400 MB/s.

Best for: Everyday gaming, productivity and storage expansion

Capacity

4TB

Interface

PCIe 4.0 x4, NVMe

Sequential read

Up to 7,400 MB/s

Sequential write

Up to 7,000 MB/s

Warranty

5 years

Pros

• Competitive rated speeds for PCIe 4.0
• 4TB capacity fits a broad range of storage needs
• Practical balance for gaming and general work

Cons

• Does not reach PCIe 5.0 drive speeds
• Confirm the exact model's heatsink configuration before purchase

Is the Crucial T500 4TB worth buying on Black Friday 2026?

The Crucial T500 4TB is a sensible PCIe 4.0 upgrade for mixed everyday use. The Crucial T500 4TB provides 4TB of capacity and rated sequential reads up to 7,400 MB/s, making it a strong fit for compatible gaming and productivity systems.

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#6

Kingston FURY Renegade G5 4TB

The Kingston FURY Renegade G5 4TB is the best speed-focused PCIe 5.0 alternative for advanced desktop builds, with reads up to 14,800 MB/s.

Best for: Advanced PCIe 5.0 desktop builds

Capacity

4TB

Interface

PCIe 5.0 x4, NVMe

Sequential read

Up to 14,800 MB/s

Sequential write

Up to 14,000 MB/s

Warranty

5 years

Pros

• High rated read and write speeds
• 4TB capacity for demanding desktop storage
• PCIe 5.0 interface for compatible systems

Cons

• Requires a PCIe 5.0-capable platform for full performance
• Cooling and slot clearance deserve attention

Is the Kingston FURY Renegade G5 4TB worth buying on Black Friday 2026?

The Kingston FURY Renegade G5 4TB suits a PCIe 5.0 desktop where high sequential speed and 4TB capacity are priorities. The Kingston FURY Renegade G5 4TB's rated reads reach 14,800 MB/s, and buyers should confirm motherboard support and cooling.

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#7

Seagate FireCuda 530R 4TB

The Seagate FireCuda 530R 4TB is the best endurance-oriented PCIe 4.0 pick for demanding storage workloads, with reads up to 7,400 MB/s.

Best for: High-write PCIe 4.0 workloads

Capacity

4TB

Interface

PCIe 4.0 x4, NVMe

Sequential read

Up to 7,400 MB/s

Sequential write

Up to 7,000 MB/s

Endurance

Up to 5,050 TBW

Pros

• High published endurance for frequent writes
• Fast rated sequential performance for PCIe 4.0
• 4TB capacity supports sizable active workloads

Cons

• Does not match PCIe 5.0 sequential speeds
• Check cooling and motherboard fit before installation

Is the Seagate FireCuda 530R 4TB worth buying on Black Friday 2026?

The Seagate FireCuda 530R 4TB is a compelling PCIe 4.0 option for workloads with frequent writes. The Seagate FireCuda 530R 4TB's rated endurance reaches 5,050 TBW, alongside reads up to 7,400 MB/s and 4TB of storage.

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Which is faster, the Samsung 9100 PRO 4TB or WD_BLACK SN850X 4TB?

The Samsung 9100 PRO 4TB has the higher rated sequential read speed at 14,800 MB/s, compared with 7,300 MB/s for the WD_BLACK SN850X 4TB. The Samsung drive uses PCIe 5.0, while the WD_BLACK drive uses PCIe 4.0.

That specification advantage matters most for large file transfers and workloads that use the bandwidth. Everyday applications and game loading do not always scale directly with sequential read figures. A PCIe 5.0 SSD also needs a compatible motherboard slot and suitable cooling to reach its intended performance.

For a compatible new desktop build, the Samsung 9100 PRO 4TB leads on speed. For an existing PCIe 4.0 system, the WD_BLACK SN850X 4TB is a simpler match and still offers strong rated performance.

Which 4TB SSD is better value for a gaming PC?

The WD_BLACK SN850X 4TB and Crucial T500 4TB are practical PCIe 4.0 gaming choices, with rated reads of 7,300 MB/s and 7,400 MB/s respectively. Both offer enough listed capacity for a large game library without requiring a PCIe 5.0 platform.

The best value depends on the complete Black Friday 2026 listing, the exact product variant and your system's cooling setup. Compare the cost per terabyte using the live listing, and verify whether a heatsink is included before checkout. Avoid paying for PCIe 5.0 speed when the motherboard only supports PCIe 4.0.

The Samsung 9100 PRO 4TB makes more sense when the system supports PCIe 5.0 and the workload benefits from higher transfer rates. For gaming alone, a well-matched PCIe 4.0 drive is the more balanced upgrade.

Will these SSDs work in a PS5 or laptop?

The WD_BLACK SN850X 4TB, Samsung 990 PRO 4TB and Crucial T500 4TB use PCIe 4.0 NVMe, making them more relevant to compatible PS5 expansion and many laptop upgrades than PCIe 5.0 drives. Device-specific fit and cooling requirements still decide compatibility.

For PS5 storage expansion, choose a model and configuration with an appropriate heatsink, and follow Sony's current installation requirements. A bare M.2 SSD without a heatsink needs a compatible cooling solution. Check the console's supported capacity and physical dimensions before buying.

Laptop owners should confirm M.2 2280 support, single-sided or double-sided clearance, interface generation and any warranty restrictions. A fast drive does not deliver its rated top speed when the laptop slot uses a slower interface or has thermal limits.

Does a PCIe 5.0 SSD make sense for most buyers?

The Samsung 9100 PRO 4TB, Crucial T705 4TB and Kingston FURY Renegade G5 4TB are PCIe 5.0 drives, with listed reads from 14,500 to 14,800 MB/s. They fit compatible desktops built for high-bandwidth storage.

A PCIe 5.0 SSD makes the clearest case for frequent large transfers, demanding creative projects and a new system with the right slot and cooling. General browsing, office tasks and many games do not need the highest sequential numbers. PCIe 4.0 options deliver strong specifications on a wider range of existing systems.

Check the motherboard manual before choosing a drive. Slot sharing, heatsink coverage and operating temperatures matter, and some laptops lack the space or thermal headroom for high-performance PCIe 5.0 storage.

What should buyers compare before Black Friday 2026?

Black Friday 2026 SSD buyers should compare the exact 4TB model, interface, heatsink configuration, warranty and current listing rather than relying on a headline speed alone. The Samsung 9100 PRO 4TB is PCIe 5.0; the WD_BLACK SN850X 4TB is PCIe 4.0.

Sequential read and write ratings help distinguish products, but real performance also depends on workload, system hardware and thermal conditions. Endurance ratings matter for drives that receive frequent writes. A five-year warranty is common across several picks here, but verify the terms for the precise product and region.

Confirm that the seller listing names the capacity and model you intend to buy. For a console or laptop, check dimensions and heatsink requirements as well. A compatible SSD with the right capacity is a better upgrade than a faster model your system cannot use fully.

Buying Guide

Match the SSD to the interface

Choose PCIe 5.0 only when the computer has a compatible PCIe 5.0 M.2 slot. The Samsung 9100 PRO 4TB reaches rated reads up to 14,800 MB/s in suitable hardware. PCIe 4.0 drives remain a strong fit for many existing systems.

Check the heatsink and physical fit

Confirm M.2 2280 support, clearance and cooling before choosing a drive. A PS5 expansion SSD needs a suitable heatsink configuration that follows the console's installation requirements. Laptop space restrictions also affect whether a double-sided SSD fits.

Choose capacity for your library

A 4TB SSD suits large game libraries, media collections and active creative projects. Compare the intended drive with the system's supported capacity and available M.2 slots. Leave room for system files and future expansion when deciding how much storage to buy.

Compare specifications and warranty

Review sequential read and write figures alongside endurance and warranty details. The Seagate FireCuda 530R 4TB lists endurance up to 5,050 TBW, while other models prioritize different speed or compatibility needs. Verify published terms for the exact SKU and region.

Inspect the Black Friday 2026 listing

Check the named model, capacity, heatsink version, seller and return terms on the live listing. Compare the full 4TB configuration rather than a headline that refers to another size. Match the purchase to your system instead of paying for unused interface speed.

FAQ

Samsung 9100 PRO 4TB vs WD_BLACK SN850X 4TB: which should I buy?

Choose the Samsung 9100 PRO 4TB for a compatible PCIe 5.0 desktop and demanding transfer workloads. Choose the WD_BLACK SN850X 4TB for PCIe 4.0 gaming and general storage. Their rated reads are 14,800 MB/s and 7,300 MB/s respectively.

Is the WD_BLACK SN850X 4TB good for PS5?

The WD_BLACK SN850X 4TB is a PCIe 4.0 NVMe drive suitable for compatible PS5 expansion when paired with an appropriate heatsink. Check Sony's current installation guidance, the precise drive dimensions and the exact product configuration before buying.

Is a 4TB SSD enough for gaming?

A 4TB SSD provides substantial room for games, updates and other files, though actual space available is lower after formatting and system use. Check your game library size and console or computer compatibility before selecting the capacity.

Does the Samsung 9100 PRO 4TB work in a PCIe 4.0 slot?

The Samsung 9100 PRO 4TB uses PCIe 5.0 and requires a compatible M.2 NVMe slot. A backward-compatible system can operate a newer SSD at the supported interface level, but PCIe 4.0 limits the drive's maximum transfer speed.

Which 4TB SSD has the highest endurance in this guide?

The Seagate FireCuda 530R 4TB lists endurance up to 5,050 TBW, the highest published endurance figure among the products compared here. Endurance is one selection factor; system compatibility, workload, warranty and capacity also matter.

Should I choose PCIe 4.0 or PCIe 5.0 for Black Friday 2026?

Choose PCIe 5.0 for compatible hardware and workloads that benefit from high sequential throughput. PCIe 4.0 suits many gaming PCs, laptops and storage upgrades. Confirm the motherboard interface, cooling, M.2 clearance and intended use before deciding.