Adamanta
128GB (4x32GB) Memory Upgrade for 2020 Apple iMac 27" w/Retina 5K Display & 2019 Apple iMac 27" w/Retina 5K Display DDR4 2666Mhz PC4-21300 SODIMM 2Rx8 CL19 1.2v DRAM RAM
*Price sourced from Amazon.com. Last updated 2026-05-26. Price and availability subject to change.
Bottom line: The 128GB (4x32GB) Memory Upgrade for 2020 Apple iMac 27" w/Retina 5K Display & 2019 Apple iMac 27" w/Retina 5K Display DDR4 2666Mhz PC4-21300 SODIMM 2Rx8 CL19 1.2v DRAM RAM is a category leader on buyer feedback in the memory & ram category, priced around $912.00, rated 4.8★ across 169 verified Amazon reviews. A confident buy for most shoppers in this category.
SpecPicks Verdict
SpecPicks classifies Adamanta 128GB (4x32GB) Memory Upgrade for 2020 Apple iMac 27"… as a category leader on buyer feedback in the memory & ram category, based on 169 verified Amazon reviews and our ranking model that weights rating × review-volume × price-fit. Adamanta's positioning sits comfortably above the category median. Use the Compare tool to put it side-by-side with two or three close alternatives before clicking through to Amazon.
Common buyer scenarios for memory & ram of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the Amazon listing before purchase. Prices, stock, and Prime eligibility update directly from Amazon's catalog and may have moved since this page was last verified.
Pros & Cons
Pros
- ✓ Highly rated — 4.8★ average across customer reviews
- ✓ We always have hundreds in stock! Every single module is fully tested by the manufacturer.
- ✓ Backed by Adamanta's warranty and support channels
- ✓ Ships via Amazon with Prime eligibility and the standard returns policy
Cons
- ✗ Confirm socket / form-factor / power-rating compatibility against your build before ordering
- ✗ Price, stock, and Prime eligibility update from Amazon and may have changed since this page was last verified
Key Features
- 128GB ( 4x32GB ) DDR4 2666 MHz Non-Parity/Non-ECC Unbuffered SODIMM Memory 260 pin Dual Rank Module. Limited lifetime warranty by Adamanta. We will replace defective memory with the same or similar memory specifications. Physical or cosmetic damages are not covered by the limited lifetime warranty by Adamanta. Only limited to Adamanta branded Memory Excludes major OEMS such as Samsung, Hynix, Micron, etc.
- Memory Upgrade Compatible with 2020 27 inch iMac w/ Retina 5K Display model ID: 20,1 20,2 (i5 3.1GHz, i5 3.3GHz, i7 3.8GHz, i9 3.6GHz). Models: MXWT2LL/A, MXWU2LL/A, MXWV2LL/A
- Memory Upgrade Compatible with Early 2019 27-inch iMac w/ Retina 5K Display model ID: 19,1 (i5 3.0GHz, i5 3.1GHz, i5 3.7GHz, i9 3.6GHz)
- We always have hundreds in stock! Every single module is fully tested by the manufacturer.
- Our experienced technicians can verify if these parts will work for you with free technical support.
Full Specifications
| Brand | Adamanta |
|---|---|
| Voltage | 1.2 Volts |
| RAM Size | 128 GB |
| Unit Count | 1.0 Count |
| Form Factor | SO-DIMM |
| Memory Speed | 2666 MHz |
| Model Number | AM52SE24G64-SQ |
| Number of Pins | 260 |
| Mfr Part Number | AM52SE24G64-SQ 2019 iMAC FBA (4) |
| Memory Generation | DDR4 |
| Compatible Devices | Desktop |
| Data Transfer Rate | 2666 MHz |
| Memory Form Factor | SODIMM |
| Additional Features | Lightweight |
Ready to buy?
Adamanta 128GB (4x32GB) Memory Upgrade for 2020 Apple iMac 27" w/Retina 5K Display & 2019 Apple iMac 27" w/Retina 5K Display DDR4 2666Mhz PC4-21300 SODIMM 2Rx8 CL19 1.2v DRAM RAM is available on Amazon with Prime shipping and the full Amazon returns policy. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.
*Price sourced from Amazon.com. Last updated 2026-05-26. Price and availability subject to change.
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