Western Digital BLACKWESTERN DIGITAL SN850X 1TB 2TB 4TB WESTERN DIGITAL SN580 250GB 500GB 1TB 2TB SSD M.2 2280 Internal Solid State Drive NVMe PCIe 4.0 Game Drive Works

Western Digital BLACKWESTERN DIGITAL SN850X 1TB 2TB 4TB WESTERN DIGITAL SN580 250GB 500GB 1TB 2TB SSD M.2 2280 Internal Solid State Drive NVMe PCIe 4.0 Game Drive Works

$33.89 – $323.89

Performance Tier:
- SN850X: Flagship speeds (7000+ MB/s) with DRAM
- SN580: Budget PCIe 4.0 (4000+ MB/s) DRAM-less (HMB)
Use Cases:
- SN850X: 4K video editing, gaming rigs, workstations
- SN580: Office PCs, budget gaming, laptop upgrades
Best Value Picks:
- SN850X 2TB: Best balance for pros
- SN580 1TB: Best budget performer

Why Choose SN850X?

✔ True PCIe 4.0 flagship speeds
✔ DRAM cache for sustained workloads
✔ Higher endurance ratings

Why Choose SN580?

✔ Most affordable PCIe 4.0 option
✔ Still 4x faster than SATA SSDs
✔ Good for basic gaming/content creation

For most users: Gamers should consider SN850X 1TB, while budget builders will prefer SN580 1TB. Content creators needing maximum performance should opt for SN850X 2TB/4TB.

WESTERN DIGITAL SN850X

WESTERN DIGITAL SN580 1TB
WESTERN DIGITAL SN580 250GB
WESTERN DIGITAL SN580 2TB
WESTERN DIGITAL SN580 500GB
WESTERN DIGITAL SN850X 1TB
WESTERN DIGITAL SN850X 2TB
WESTERN DIGITAL SN850X 4TB

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SKU: N/A Category: Hard drives

Western Digital BLACKWESTERN DIGITAL SN850X 1TB 2TB 4TB WESTERN DIGITAL SN580 250GB 500GB 1TB 2TB SSD M.2 2280 Internal Solid State Drive NVMe PCIe 4.0 Game Drive Works

Here’s a detailed comparison table for WD Black SN850X (PCIe 4.0 flagship) and WD Blue SN580 (PCIe 4.0 budget) SSDs:

WD SN850X vs SN580 NVMe SSD Comparison Table

Specification	SN850X 1TB	SN850X 2TB	SN850X 4TB	SN580 250GB	SN580 500GB	SN580 1TB	SN580 2TB
Product Line	Black (Premium)	Black (Premium)	Black (Premium)	Blue (Budget)	Blue (Budget)	Blue (Budget)	Blue (Budget)
Form Factor	M.2 2280	M.2 2280	M.2 2280	M.2 2280	M.2 2280	M.2 2280	M.2 2280
Interface	PCIe 4.0 x4	PCIe 4.0 x4	PCIe 4.0 x4	PCIe 4.0 x4	PCIe 4.0 x4	PCIe 4.0 x4	PCIe 4.0 x4
Sequential Read	7,300 MB/s	7,300 MB/s	7,300 MB/s	4,150 MB/s	4,150 MB/s	4,150 MB/s	4,150 MB/s
Sequential Write	6,300 MB/s	6,600 MB/s	6,600 MB/s	2,000 MB/s	2,500 MB/s	4,150 MB/s	4,150 MB/s
Random Read (4K)	800K IOPS	1,200K IOPS	1,200K IOPS	240K IOPS	360K IOPS	480K IOPS	550K IOPS
Random Write (4K)	1,100K IOPS	1,100K IOPS	1,100K IOPS	420K IOPS	500K IOPS	550K IOPS	600K IOPS
NAND Type	3D TLC	3D TLC	3D TLC	3D TLC	3D TLC	3D TLC	3D TLC
DRAM Cache	Yes	Yes	Yes	No (HMB)	No (HMB)	No (HMB)	No (HMB)
TBW (Endurance)	600 TBW	1,200 TBW	2,400 TBW	150 TBW	300 TBW	600 TBW	900 TBW
MTBF	1.75M hours	1.75M hours	1.75M hours	1.75M hours	1.75M hours	1.75M hours	1.75M hours
Encryption	AES 256-bit	AES 256-bit	AES 256-bit	AES 256-bit	AES 256-bit	AES 256-bit	AES 256-bit
Warranty	5 years	5 years	5 years	5 years	5 years	5 years	5 years
Price (Approx.)	$100 -$ 120	$180 -$ 220	$350 -$ 400	$30 -$ 40	$45 -$ 55	$75 -$ 90	$130 -$ 150

Two Tiers of Performance for Every Need

Western Digital offers two compelling PCIe 4.0 NVMe SSD options: the flagship Black SN850X (1TB-4TB) for power users and the budget-friendly Blue SN580 (250GB-2TB) for mainstream computing. This comparison highlights their key differences to help you choose the right drive for your needs.

Key Series Comparison

Feature	WD Black SN850X	WD Blue SN580
Target User	Gamers/Content Creators/Pros	Mainstream Users/Budget Builders
Max Sequential Read	7,300 MB/s	4,150 MB/s
Max Sequential Write	6,600 MB/s	4,150 MB/s
DRAM Cache	Yes	No (HMB technology)
NAND Type	3D TLC	3D TLC
Warranty	5 years	5 years
Price per GB	Higher (~$0.10/GB)	Lower (~$0.06/GB)

WD Black SN850X (Premium Performance)

Capacities: 1TB / 2TB / 4TB
Best For:

4K/8K video editing
High-end gaming rigs
Workstation applications

Key Advantages:
✅ DRAM cache for sustained performance
✅ WD Black Dashboard with gaming mode
✅ Up to 2,400 TBW endurance (4TB model)
✅ DirectStorage optimized

Performance Highlights:

Capacity	Write Speed	Random IOPS	Endurance
1TB	6,300 MB/s	1.1M	600 TBW
2TB	6,600 MB/s	1.1M	1,200 TBW
4TB	6,600 MB/s	1.1M	2,400 TBW

WD Blue SN580 (Budget-Friendly)

Capacities: 250GB / 500GB / 1TB / 2TB
Best For:

Office PCs
Casual gaming
Laptop upgrades

Key Advantages:
✅ Most affordable PCIe 4.0 option
✅ Still 4x faster than SATA SSDs
✅ Low power consumption

Performance Highlights:

Capacity	Write Speed	Random IOPS	Endurance
250GB	2,000 MB/s	420K	150 TBW
500GB	2,500 MB/s	500K	300 TBW
1TB	4,150 MB/s	550K	600 TBW
2TB	4,150 MB/s	600K	900 TBW

Which Should You Choose?

For Gaming/Content Creation:

SN850X 2TB (Best balance of speed/capacity)
SN850X 4TB (For 8K video workflows)

For General Computing:

SN580 1TB (Best value)
SN580 500GB (Budget builds)

For Laptops:

SN580 (Better power efficiency)

Technical Comparison

Aspect	SN850X Advantage	SN580 Advantage
Speed	75% faster sequential writes	Good enough for most users
Endurance	Higher TBW ratings	Adequate for typical workloads
Price	$100 -$ 400	$30 -$ 150
Use Case	Demanding professional workloads	Everyday computing

Final Recommendation

Choose SN850X if you need:

Maximum PCIe 4.0 performance
Workstation-level endurance
Gaming-optimized features

Choose SN580 if you want:

Affordable PCIe 4.0 speeds
Reliable everyday performance
Best bang-for-buck

WESTERN DIGITAL SN850X	WESTERN DIGITAL SN580 1TB, WESTERN DIGITAL SN580 250GB, WESTERN DIGITAL SN580 2TB, WESTERN DIGITAL SN580 500GB, WESTERN DIGITAL SN850X 1TB, WESTERN DIGITAL SN850X 2TB, WESTERN DIGITAL SN850X 4TB

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