Updated July 14, 2026 · 298 modules
Silicon Power leads on segment $/GB. Buy live Amazon kits below — brand pages for the full catalogs.
OWC
$34.27/GB
DDR5 32GB $/GB
Silicon Power
$12.81/GB
DDR5 32GB $/GB
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OWC +168%
vs Silicon Power
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.Silicon Power
Silicon Power DDR5 64GB Kit (2 x 32GB) 5600MHz (PC5-44800) CL46 1.1V SODIMM Non-ECC Laptop RAM Computer Memory SU064GBSVU560F22EC$699.97
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.Silicon Power
Silicon Power DDR4 32GB (2x16GB) 3200MHz (PC4-25600) CL22 SODIMM 260-Pin 1.2V Non-ECC Laptop RAM Notebook Computer Memory SP032GBSFU320X22$194.97
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
Silicon Power is the budget pick on segment $/GB; OWC may win on ratings or selection.
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
Silicon Power
Silicon Power DDR4 16GB 3200MHz (PC4-25600) CL22 SODIMM 260-Pin 1.2V Non-ECC Laptop RAM Notebook Computer Memory SU016GBSFU320F02AB
$99.97
Choose OWC if…
Choose Silicon Power if…
Price per GB by capacity
Apples-to-apples at each capacity tier
| Capacity | OWC | Silicon Power |
|---|---|---|
| 8GB | $7.89/GB | $10.11/GB |
| 16GB | $11.38/GB | $9.17/GB |
| 32GB | $14.47/GB | $10.84/GB |
| 64GB | $15.90/GB | $12.87/GB |
| 128GB | $14.04/GB | — |
Capacity coverage
How many SKUs at each capacity
| Capacity | OWC | Silicon Power |
|---|---|---|
| 1GB | — | 3 |
| 2GB | — | 6 |
| 4GB | 3 | 3 |
| 8GB | 10 | 15 |
| 12GB | — | 1 |
| 16GB | 37 | 29 |
| 24GB | — | 2 |
| 32GB | 39 | 39 |
| 64GB | 36 | 10 |
| 128GB | 35 | — |
| 256GB | 23 | — |
| 512GB | 5 | — |
Speed mix & form factors
Where each brand concentrates its lineup
OWC speeds
Silicon Power speeds
OWC DDR / form
Silicon Power DDR / form
Answers use live segment pricing and catalog counts — updated July 14, 2026.
Silicon Power leads on DDR5 32GB $/GB at $12.81/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.
Silicon Power averages 4.4★ across 110 tracked modules (22 rated 4.7★+). Compare the most-trusted picks below and browse the Silicon Power brand page for the full lineup.
For value, start with Silicon Power on segment $/GB today. For reliability, compare average ratings (OWC 4.4★ vs Silicon Power 4.4★) and the most-trusted kits on this page. Buy the Amazon kit that matches your capacity and platform.
OWC and Silicon Power have similar average customer ratings.
OWC offers more variety with 188 tracked modules vs Silicon Power's 110.
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). Silicon Power currently leads on segment $/GB — buy a dual-stick kit from the Amazon picks above.
OWC has 55 SO-DIMM modules tracked; Silicon Power has 26. Browse OWC or Silicon Power brand pages, or use the RAM Finder for laptop upgrades.