Bigger is Cheaper — The Capacity Value Inversion Is Real
This week’s data exposes something counterintuitive that keeps getting more pronounced: buying more storage actually costs less per gigabyte, even at the entry level of each tier.
The cheapest per-GB drive in the 1TB market is the SUNEAST 1TB Gen4 at around $0.151/GB. The cheapest per-GB in the 2TB tier is the WD Green SN3000 2TB at $0.12/GB. And the 4TB tier floor is sitting at $0.115/GB. The inversion runs all the way down — the cheapest 4TB option undercuts the cheapest 1TB option by more than 24%.
The median 1TB price is $189.99, the median 2TB is $329.69, and the median 4TB is $599.99. Do the math — you’re getting 4x the storage for roughly 3x the median spend.
The practical takeaway for anyone planning a build: unless budget is extremely tight, the 2TB or 4TB tier delivers meaningfully better value. For PS5 upgraders especially, the 4TB math is hard to ignore.
A caveat on the cheapest 4TB listing: it’s a no-name brand literally called “4TB” with 5 reviews and only 5 units bought in the past month. The price is attractive, but this is exactly the kind of listing you skip unless someone else has done the legwork of validating it. The WD_BLACK SN7100 4TB has 6,500 reviews and TLC NAND for a bit more — that’s a much safer buy in this tier.
Sandisk Is Dominating Purchase Volume — But Something Looks Off
The “most bought” chart is almost entirely Sandisk. Six of the top ten positions belong to the Sandisk Optimus lineup, including drives racking up 71,000–82,800 units bought in the past month. That’s not just a lot — it’s implausibly high relative to the review counts and overall market context.
The top Sandisk listing has 82,800 monthly purchases and exactly 1 review. The 4TB Optimus GX PRO 850X shows 81,400 buys with 12 reviews and a 3.6 rating. These numbers don’t pass the smell test. Whether it’s a data artifact, a fulfillment channel inflating consumer numbers, or something else, I’d take the raw purchase volume for these listings with a large grain of salt.
What I will say: the Sandisk Optimus 5100 4TB with 149 reviews and a 4.8 rating is worth a look at its current price if the value math works out for you. The legitimate Sandisk options do have real review bases and look competitive.
The Week’s Biggest Price Moves
The WD_BLACK SN8100 2TB Gen5 had the biggest 7-day rise — up 20.3% in a week, now sitting at $480.00. That’s a meaningful jump for a drive that was already premium-priced. If you were eyeing it, that window has closed for now.
On the other side, the Crucial P310 2TB dropped $16.10 over seven days and is now at $253.68. With 11,100 reviews at 4.7 stars and 500 units bought last month, this is one of the more trustworthy drives in the 2TB value range. Worth picking up if you’re in the market.
The Crucial P510 1TB Gen5 also dropped — down 9.2% over the week and another 7.1% yesterday alone. Currently $219.99 with a heatsink and TLC NAND, this is one of the better entry points into Gen 5 if you want 11,000 MB/s reads without paying flagship prices.
Gen 5 Is Getting Harder to Argue Against
The Gen 5 premium has compressed to just 9.34% over Gen 4 on a per-GB basis. That’s across 52 Gen 5 drives tracked versus 233 Gen 4. A year ago this gap was significantly wider.
For gaming, Gen 4 remains the rational choice — nothing in consumer gaming saturates Gen 4 bandwidth. But if you’re doing video editing, large file transfers, or you just want the drive that won’t be the bottleneck in 2028, Gen 5 is no longer a luxury tax. It’s a modest premium.
The WD_BLACK SN8100 2TB at 14,900 MB/s reads is currently the performance benchmark in the 2TB Gen 5 class, with 1,000 reviews at 4.7 stars and 200 units bought last month. It’s priced up this week after the 20% jump, but check back.
For a direct comparison between the mainstream Gen 4 value pick and a Gen 5 option in the same segment:
| Model | Price | $/GB | Capacity | Gen | Read | Rating | |
|---|---|---|---|---|---|---|---|
| Crucial P310 2TB SSD, | $253.68 | $0.1268 | 2TB | Gen 4 | 7,100 MB/s | 4.7 ★ | Buy → |
| Crucial P510 PCIe Gen5 | $219.99 | $0.2200 | 1TB | Gen 5 | 11,000 MB/s | 4.8 ★ | Buy → |
| WD_Black SN8100 2TB NVMe | $480.00 | $0.2400 | 2TB | Gen 5 | 14,900 MB/s | 4.8 ★ | Buy → |
Samsung Pricing: Creeping Up Mid-Week
Three Samsung listings jumped 6–8% overnight with no obvious trigger: the Samsung 990 EVO 2TB, the Samsung 980 PRO 2TB, and the Samsung 990 PRO 4TB (single and 2-pack variant). The 990 EVO 2TB is now at $399.99 — still a legitimate drive with 1,300 reviews, but you’re paying for the badge at this point given what the competitive field offers.
If you want Samsung quality without the markup, the Samsung 990 PRO 2TB (Amazon’s Choice) at $395.62 is the better call — 13,300 reviews, 6,000 bought last month, and it hasn’t moved this week.
Listings to Avoid
A few things in this week’s data deserve a red flag:
The no-brand “4TB” and “2TB” listings — these are products where the brand field in the data literally reads “4TB” or “2TB.” No brand identity, zero reviews in some cases, and prices that look attractive. Combined with the low purchase volumes, there’s no reason to trust these over established alternatives.
Samsung 990 PRO 2-Pack — flagged as a suspected multipack, listed at $1659.00 with only 4 reviews. It’s categorized as a 4TB listing but it’s two 2TB drives. Pricing looks inflated versus buying two individual units.
The OWC Accelsior 64TB RAID solution — yes, it’s in our dataset and showing 26,000 monthly purchases. It’s a PCIe card with eight M.2 slots, not a consumer SSD. Ignore it.
Quick Value Picks This Week
For PS5 upgraders who want a proven heatsink bundle, the MOVE SPEED HB7450 2TB with Heatsink at $299.99 has 842 reviews, TLC NAND, and 500 units moved last month. Solid choice at its tier.
For budget builders who want a 1TB from a recognizable brand, the Samsung 990 PRO 1TB remains the bestseller with 13,300 reviews and 4,000 purchases last month at $259.99.
See the full Best Budget NVMe and Best Gen 4 NVMe guides for deeper picks across all tiers.