Updated July 14, 2026 · 404 modules
Samsung leads on segment $/GB; Samsung leads on ratings. Buy live Amazon kits below — brand pages for the full catalogs.
OWC
$34.27/GB
DDR5 32GB $/GB
Samsung
$14.37/GB
DDR5 32GB $/GB
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OWC +138%
vs Samsung
Best buyable DDR4 and DDR5 kits by $/GB (dual-stick preferred)
OWC
OWC 128GB (8x16GB) DDR5 5600 PC5-44800 CL46 1Rx8 288-pin 1.1V ECC Registered RDIMM Memory RAM Module Upgrade Kit for Select Workstations or Servers$395.00
Verify on Amazon.com before purchasing — checkout price applies.Samsung
Samsung 64GB (2x32GB) DDR5 4800MHz PC5-38400 SODIMM 2Rx8 Dual Rank CL40 1.1v 262pin Non-ECCM425R4GA3BB0-CQK Laptop Notebook RAM Memory Upgrade$710.00
Verify on Amazon.com before purchasing — checkout price applies.OWC
OWC 128GB (4 x 32GB) DDR4 ECC Registerd CL21 PC4-21300 2666MHz SDRAM Memory Ram Upgrade Module Compatible with 2019 Mac Pro 7,1 and 2017 iMac Pro 1,1 (OWC2666R3M128)$262.22
Verify on Amazon.com before purchasing — checkout price applies.Samsung
Samsung Memory Bundle with 128GB (4 x 32GB) DDR4 PC4-21300 2666MHz RDIMM (4 x M393A4K40CB2-CTD) Registered Server Memory$689.00
Verify on Amazon.com before purchasing — checkout price applies.Disclosure: As an Amazon Associate I earn from qualifying purchases. Rankings use price and spec data only — not paid placement. How we rank products
Samsung leads today on both segment $/GB and ratings across 216 modules.
Segment medians preferred for $/GB (not raw catalog averages). Updated July 14, 2026.
Highest rating × review volume — for buyers comparing reliability, not just lowest price
OWC
OWC 32GB (4 x 8GB) PC12800 DDR3L 1600MHz SO-DIMMs Memory Compatible with 2011-2015 iMac Models (OWC1600DDR3S32S)
$148.39
Samsung
SAMSUNG M471A1K43CB1-CRC 8GB DDR4 2400MH Memory Module (8 GB, 1 x 8 GB, DDR4, 2400 MHz, 260-Pin SO-DIMM)
$59.75
Choose OWC if…
Choose Samsung if…
Price per GB by capacity
Apples-to-apples at each capacity tier
| Capacity | OWC | Samsung |
|---|---|---|
| 8GB | $7.89/GB | $8.94/GB |
| 16GB | $11.38/GB | $9.80/GB |
| 32GB | $14.47/GB | $10.41/GB |
| 64GB | $15.90/GB | $11.78/GB |
| 128GB | $14.04/GB | $11.03/GB |
Capacity coverage
How many SKUs at each capacity
| Capacity | OWC | Samsung |
|---|---|---|
| 2GB | — | 1 |
| 4GB | 3 | 18 |
| 8GB | 10 | 61 |
| 16GB | 37 | 62 |
| 32GB | 39 | 45 |
| 64GB | 36 | 19 |
| 128GB | 35 | 6 |
| 256GB | 23 | 3 |
| 512GB | 5 | — |
Speed mix & form factors
Where each brand concentrates its lineup
OWC speeds
Samsung speeds
OWC DDR / form
Samsung DDR / form
Answers use live segment pricing and catalog counts — updated July 14, 2026.
Samsung leads on DDR5 32GB $/GB at $14.37/GB vs OWC at $34.27/GB (updated July 14, 2026).
OWC averages 4.4★ across 188 tracked modules (43 rated 4.7★+). For most buyers, prioritise dual-stick kits with the right speed for your platform — see the Amazon picks and OWC brand page.
Samsung averages 4.7★ across 216 tracked modules (93 rated 4.7★+). Compare the most-trusted picks below and browse the Samsung brand page for the full lineup.
For value, start with Samsung on segment $/GB today. For reliability, compare average ratings (OWC 4.4★ vs Samsung 4.7★) and the most-trusted kits on this page. Buy the Amazon kit that matches your capacity and platform.
Samsung averages 4.7★ vs OWC's 4.4★ across their product ranges.
Samsung offers more variety with 216 tracked modules vs OWC's 188.
Both brands offer DDR4 and DDR5 modules in DIMM and SO-DIMM form factors. Compatibility depends on memory type and speed — not the brand. Check your motherboard QVL before buying.
For gaming, prioritise DDR5-6000 CL30 (AMD AM5) or DDR5-5600–6400 (Intel). Samsung currently leads on segment $/GB — buy a dual-stick kit from the Amazon picks above.
OWC has 55 SO-DIMM modules tracked; Samsung has 102. Browse OWC or Samsung brand pages, or use the RAM Finder for laptop upgrades.