Pricing
CATALOG
Class average, best price per GB:
SATA
$0.138
→ Holding (+2.9% since last reported)
Gen 4
$0.184
→ Holding (0.0% since last reported)
Gen 5
$0.199
→ Holding (−2.5% since last reported)
Snapshot Nov 2, 2026
Filters
Sorting all capacities by $/GB favors larger drives. Pick a capacity to compare like with like.
Drive
Capacity
Best price
$/GB
vs Class
Trend
4TB
$351
/
$372
6% OFF
at Amazon.
Lowest in ~1 month ($335)
$0.088
/GB
36% below the average best SATA price ($0.138/GB)
Patriot P400 Lite NVMe PCIe Gen4 (64 Gbps)
PCIe Gen4 · M.2 2280
4TB
$489
/
$534
8% OFF
at Walmart.
Lowest tracked price
$0.122
/GB
34% below the average best Gen 4 price ($0.184/GB)
4TB
$560
/
$599
7% OFF
at Newegg.
Lowest tracked price
$0.140
/GB
30% below the average best Gen 5 price ($0.199/GB)
SanDisk WD_BLACK SN7100 NVMe PCIe Gen4 (64 Gbps)
PCIe Gen4 · M.2 2280
4TB
$589
/
$609
3% OFF
at Best Buy.
Lowest tracked price
$0.147
/GB
20% below the average best Gen 4 price ($0.184/GB)
SanDisk WD_BLACK SN850X NVMe PCIe Gen4 (64 Gbps)
PCIe Gen4 · M.2 2280
4TB
$673
/
$682
1% OFF
at Newegg.
Low was $639
$0.168
/GB
9% below the average best Gen 4 price ($0.184/GB)
Lexar NM790 NVMe PCIe Gen4 (64 Gbps)
PCIe Gen4 · M.2 2280
4TB
$691
/
$849
19% OFF
at Amazon.
Lowest in ~2 months ($509)
$0.173
/GB
6% below the average best Gen 4 price ($0.184/GB)
Down 2% vs last cycle
4TB
$699
/
$1,059
34% OFF
at Corsair Direct.
Lowest tracked price
$0.175
/GB
5% below the average best Gen 4 price ($0.184/GB)
Down 34% vs last cycle
Corsair MP700 PRO NVMe PCIe Gen5 (128 Gbps)
PCIe Gen5 · M.2 2280
4TB
$699
/
$839
17% OFF
at Amazon.
Lowest tracked price
$0.175
/GB
12% below the average best Gen 5 price ($0.199/GB)
Down 17% vs last cycle
SanDisk 520 SATA III (6 Gbps)
SATA · 2.5-inch
4TB
$719
/
$873
18% OFF
at B&H.
Lowest tracked price
$0.180
/GB
30% above the average best SATA price ($0.138/GB)
Lexar NM1090 PRO NVMe PCIe Gen5 (128 Gbps)
PCIe Gen5 · M.2 2280
4TB
$729
/
$999
27% OFF
at Newegg.
Lowest tracked price
$0.182
/GB
8% below the average best Gen 5 price ($0.199/GB)
SAMSUNG 990 EVO PLUS NVMe PCIe Gen4 (64 Gbps)
PCIe Gen4 · M.2 2280
4TB
$739
/
$1,049
30% OFF
at Best Buy.
Lowest tracked price
$0.185
/GB
In line with the average best Gen 4 price ($0.184/GB)
Down 37% vs last cycle
SanDisk Optimus GX 7100 NVMe PCIe Gen4 (64 Gbps)
PCIe Gen4 · M.2 2280
4TB
$749
/
$954
21% OFF
at Best Buy.
Lowest tracked price
$0.187
/GB
In line with the average best Gen 4 price ($0.184/GB)
Down 4% vs last cycle
SAMSUNG 990 PRO NVMe PCIe Gen4 (64 Gbps)
PCIe Gen4 · M.2 2280
4TB
$786
/
$839
6% OFF
at Newegg.
Low was $798
$0.197
/GB
7% above the average best Gen 4 price ($0.184/GB)
Down 1% vs last cycle
4TB
$789
/
$1,009
22% OFF
at B&H.
Lowest in ~5 days ($699)
$0.197
/GB
Up 13% vs last cycle
4TB
$839
/
$999
16% OFF
at Walmart.
Lowest tracked price
$0.210
/GB
6% above the average best Gen 5 price ($0.199/GB)
SanDisk Optimus GX PRO 850X NVMe PCIe Gen4 (64 Gbps)
PCIe Gen4 · M.2 2280
4TB
$849
/
$999
15% OFF
at Amazon.
Lowest tracked price
$0.212
/GB
15% above the average best Gen 4 price ($0.184/GB)
Down 12% vs last cycle
SABRENT Rocket 4 Plus NVMe PCIe Gen4 (64 Gbps)
PCIe Gen4 · M.2 2280
4TB
$879
/
$999
12% OFF
at Newegg.
Lowest tracked price
$0.220
/GB
19% above the average best Gen 4 price ($0.184/GB)
4TB
$895
/
$1,049
15% OFF
at Newegg.
Low was $868
$0.224
/GB
22% above the average best Gen 4 price ($0.184/GB)
Up 14% vs last cycle
SAMSUNG T9 USB 3.2 Gen2x2 (20 Gbps)
USB 20 Gbps · External
4TB
$931
/
$1,144
19% OFF
at Amazon.
Lowest in ~14 days ($929)
$0.233
/GB
4TB
$939
/
$1,094
14% OFF
at Amazon.
Lowest in ~2 months ($789)
$0.235
/GB
Up 3% vs last cycle
SanDisk Optimus GX PRO 8100 NVMe PCIe Gen5 (128 Gbps)
PCIe Gen5 · M.2 2280
4TB
$949
/
$1,079
12% OFF
at Amazon.
Lowest in ~20 days ($939)
$0.237
/GB
19% above the average best Gen 5 price ($0.199/GB)
Down 9% vs last cycle
SAMSUNG 870 EVO SATA III (6 Gbps)
SATA · 2.5-inch
4TB
$980
/
$1,051
7% OFF
at Amazon.
Lowest in ~9 days ($1018)
$0.245
/GB
77% above the average best SATA price ($0.138/GB)
Up 3% vs last cycle
4TB
$1,059
/
$1,139
7% OFF
at Amazon.
Lowest tracked price
$0.265
/GB
44% above the average best Gen 4 price ($0.184/GB)
Down 7% vs last cycle
4TB
$1,149
/
$1,359
15% OFF
at Best Buy.
Lowest tracked price
$0.287
/GB
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About the Scores
Every drive in our catalog meets a minimum performance bar; drives below it aren't listed. The score answers one question: how much of its interface's potential does this drive actually deliver? It's based on published read and write speeds, whether smaller capacities keep the same write speed, and whether the drive has a DRAM cache, each measured against the best drive on the same interface. Because scores are relative to the interface, a Gen3 drive and a Gen5 drive can both score near 10 even though the Gen5 drive is much faster. To compare like with like, filter by interface class.