Walk into any electronics aisle or scroll through Amazon's SD card listings and you will find two brands competing for every slot on the shelf: SanDisk and Samsung. They are the Coke and Pepsi of flash storage. You probably have a brand preference already, and it is probably based on nothing more than which one you grabbed last time or which orange logo you trust more.
Here is the thing: the gap between them is real, it shifts depending on capacity, and it can mean the difference between a good deal and overpaying by 30 percent. So let us settle this properly.
First, a Reality Check on Who These Companies Are
SanDisk sounds like a scrappy American startup that loves beaches. It is not. SanDisk was acquired by Western Digital in 2016 for $19 billion. WD now makes SanDisk-branded consumer cards while also selling WD-branded storage products. They are the same company. The cute name is marketing.
Samsung, on the other hand, manufactures their own NAND flash chips in-house. They are literally making the memory that goes into their SD cards in their own factories. This vertical integration is a genuine advantage — Samsung can control quality, supply, and cost in ways that WD/SanDisk cannot, since SanDisk has to source chips from fabrication partners.
Does this matter to you as a buyer? Not directly. Both produce reliable cards. But it does explain why Samsung's prices at smaller capacities have historically been aggressive — they have tighter margins and direct control over the raw materials.
Samsung makes their own NAND chips. SanDisk (owned by Western Digital) does not. This gives Samsung a structural cost advantage that shows up in pricing — especially at 128GB and below where their volume and vertical integration really kick in.
The Speed Class Scam Nobody Talks About
Before we get to price comparisons, let us address the speed class arms race. Both brands sell cards at multiple speed tiers, and both brands name them in ways designed to make you buy more speed than you need.
Samsung's lineup: EVO Select (budget U1/A1), PRO Plus (U3/V30/A2), PRO Ultimate (V30 with higher sequential speeds), PRO Endurance (V30 optimized for continuous recording).
SanDisk's lineup: Ultra (U1/A1), Extreme (U3/V30/A2), Extreme Pro (V30 with higher sequential), High Endurance (continuous recording), MAX Endurance (very long continuous recording).
Here is what you actually need by use case:
| Use Case | Minimum Speed | What to Buy |
|---|---|---|
| Nintendo Switch | U1 / Class 10 | Samsung EVO Select or SanDisk Ultra |
| 1080p dashcam | U1 / Class 10 | Samsung EVO Select or SanDisk Ultra |
| 4K GoPro / action cam | U3 / V30 | Samsung PRO Plus or SanDisk Extreme |
| 4K camera (mirrorless/DSLR) | U3 / V30 | Samsung PRO Plus or SanDisk Extreme |
| 4K dashcam (24/7 recording) | V30 + High Endurance | Samsung PRO Endurance or SanDisk High Endurance |
| 8K camera | V60 or V90 | Check your camera manual — neither brand is cheap here |
The Nintendo Switch's card reader physically cannot read faster than about 95 MB/s, so buying a V30 or A2 card for it is throwing money away. SanDisk and Samsung both love pushing you toward faster (more expensive) tiers. Do not fall for it.
For the Nintendo Switch, Steam Deck, dashcams, or any phone — buy the cheapest U1 card that hits your capacity. The Samsung EVO Select and SanDisk Ultra are the budget workhorses here. You will not notice any speed difference versus a card that costs twice as much.
Head-to-Head: Price Per GB by Capacity
This is the actual comparison that matters. Current market prices at typical retail conditions for mainstream U1/A1 tier cards (the most popular tier for everyday use):
| Capacity | Samsung EVO Select | SanDisk Ultra | Winner |
|---|---|---|---|
| 64GB | ~$0.08–0.10/GB | ~$0.09–0.11/GB | Samsung |
| 128GB | ~$0.06–0.07/GB | ~$0.07–0.09/GB | Samsung |
| 256GB | ~$0.05–0.06/GB | ~$0.05–0.06/GB | Tie |
| 512GB | ~$0.06–0.08/GB | ~$0.05–0.07/GB | SanDisk |
| 1TB | ~$0.08–0.10/GB | ~$0.07–0.09/GB | SanDisk |
The pattern is consistent and has been for years: Samsung wins at 128GB and below, SanDisk catches up or pulls ahead at 256GB and above. The 256GB tier is typically a dead heat where it comes down to whatever is on sale that week.
Why does this happen? Samsung's NAND manufacturing advantage is most pronounced at lower capacities where volume matters most. At higher capacities, WD/SanDisk's supply chain and retail relationships let them compete more aggressively.
The practical takeaway: If you are buying a 128GB card for your Switch or an old camera, buy Samsung. If you are buying 512GB or 1TB for a long trip or a large library, check SanDisk first.
Prices move constantly. The spread between brands at any given capacity can flip during a sale. Always check live prices before buying — this table reflects typical conditions, not today's Amazon deal.
For Speed-Class Cards (U3/V30/A2 Tier)
For the faster tier — Samsung PRO Plus vs SanDisk Extreme — the pricing story is similar but compressed:
| Capacity | Samsung PRO Plus | SanDisk Extreme | Winner |
|---|---|---|---|
| 128GB | ~$0.09–0.11/GB | ~$0.10–0.13/GB | Samsung |
| 256GB | ~$0.07–0.09/GB | ~$0.07–0.09/GB | Tie |
| 512GB | ~$0.08–0.10/GB | ~$0.07–0.10/GB | SanDisk |
| 1TB | ~$0.10–0.13/GB | ~$0.09–0.12/GB | SanDisk |
Same pattern, higher absolute prices. The PRO Plus and Extreme are nearly identical in real-world performance for 4K video and action camera use. Benchmarks show small differences that translate to zero visible impact on any consumer device.
Specific Use Cases: Which Brand to Buy
Nintendo Switch / Steam Deck: Samsung EVO Select 256GB. Consistently the best per-GB price at the capacity the Switch actually benefits from. You do not need U3 or A2 — the hardware cannot use it. Stop buying the SanDisk Extreme for your Switch.
GoPro and action cameras: Both brands work well. Go with whoever is cheaper on the day you buy. Samsung PRO Plus and SanDisk Extreme are both V30 and reliably fast. If you record for hours continuously, step up to the endurance-rated cards.
Dashcams: This is where the endurance-rated variants actually matter. Dashcams write in a continuous loop, which burns through flash cells faster than burst photography. The Samsung PRO Endurance and SanDisk High Endurance use tougher NAND rated for far more write cycles — anywhere from 15,000 to 40,000 hours of continuous recording versus a few thousand for standard cards. Worth the premium.
Mirrorless and DSLR cameras: Get V30 minimum. At 256GB, the two brands are close enough that you should just buy whichever is cheaper. The performance difference in a Fuji or Sony camera is negligible.
Raspberry Pi and SBCs: Samsung EVO Select or SanDisk Ultra, 64GB or 128GB. Speed barely matters for these workloads. Reliability matters more — both brands are solid here.
When to Skip Both and Buy Lexar or TeamGroup
Here is the part neither brand wants you to read: Lexar and TeamGroup are legitimate flash storage manufacturers and they are often 20 to 40 percent cheaper per GB than Samsung or SanDisk at the same speed class.
Lexar was formerly owned by Micron (one of the three biggest NAND manufacturers on earth) and was acquired by a consortium that still produces quality cards. The Lexar PLAY (budget U1) and Lexar Professional 1066x (V30) are genuinely good cards with real performance numbers, not rebadged garbage.
TeamGroup is a Taiwanese manufacturer that has been making storage products for decades. Their cards are reliable, well-reviewed, and underpriced because they do not have SanDisk's marketing budget.
The honest answer: if the Lexar PLAY 256GB is $3 cheaper than the Samsung EVO Select 256GB, buy the Lexar. The data on your Switch does not care about branding.
Do not let brand loyalty cost you money. Lexar, TeamGroup, and Kingston all make legitimate SD cards. When they are cheaper per GB, buy them. BuyPerUnit tracks all brands side by side so you can compare actual prices instead of guessing.
The Naming Is Confusing on Purpose
One more thing worth calling out: SanDisk's product naming hierarchy is genuinely baffling and it costs people money.
Ultra is the budget line (U1/A1). Fine for most uses. Extreme is the mid-range (U3/V30/A2). Good for 4K. Extreme Pro is faster sequential speeds but still V30. High Endurance is dashcam-optimized but not faster than Extreme. Max Endurance is even more endurance-optimized. And then there is the Ultra Dual Drive which is a USB drive, not an SD card, but good luck noticing that on a cluttered shelf.
Samsung is marginally clearer but still not great. EVO Select = budget. PRO Plus = fast. PRO Ultimate = faster. PRO Endurance = dashcam. The "PRO" prefix on three different product lines with different use cases is doing a lot of heavy lifting.
Neither company is going to simplify this because confusion pushes buyers toward premium tiers. Know what you need before you shop.
The Bottom Line
SanDisk and Samsung are both solid brands. Neither will let you down for normal use. The choice between them almost always comes down to who has the better price that week.
If you are buying 128GB or smaller, Samsung is usually cheaper. If you are buying 512GB or larger, SanDisk often wins. At 256GB, flip a coin or just check what is on sale.
And if Lexar is cheaper than both, buy the Lexar.
Stop picking SD cards by logo color. Pick them by cents per gigabyte.
See Live SD Card Prices Ranked by Value at BuyPerUnit →Frequently Asked Questions
Is SanDisk or Samsung more reliable?
Both are among the most reliable SD card brands on the market. Long-term failure rate data and consumer reviews show no meaningful difference between them for normal use. Buy on price.
Does the Samsung EVO Select work in a Nintendo Switch?
Yes. The EVO Select is a U1/A1 card — that meets and exceeds the Switch's minimum requirements and matches its actual read speed ceiling. It is one of the best value options for the Switch.
Is SanDisk Extreme worth it over SanDisk Ultra?
Only if your device actually needs U3/V30. For the Nintendo Switch, dashcams, or phone storage, the Ultra is sufficient and cheaper. For GoPro, 4K cameras, or drones, step up to the Extreme.
Are Samsung or SanDisk cards sold on Amazon legit?
Buy from the official Samsung or SanDisk storefronts on Amazon, or from major retailers like Best Buy and B&H. Third-party marketplace sellers are where counterfeit cards show up. At 512GB and above, always verify your card's actual capacity after purchase using H2testw (Windows) or F3 (Mac/Linux).
What is the best microSD card for under $20?
At current prices, a 256GB Samsung EVO Select or SanDisk Ultra typically falls in the $15 to $20 range — around $0.06 to $0.07 per GB. That is the sweet spot for everyday use. Check live prices on BuyPerUnit to see what is cheapest today.