OWC
OWC Memory 64GB (2X 32GB) DDR3 ECC Registered CL9 PC3-10600 1333MHz RAM
Status: OWC Memory 64GB: Unavailable on Amazon as of . SpecPicks has no in-stock listing with matching specs on file; the search below lists current offers. eBay sellers may still list this model new or used.
Bottom line: The OWC Memory 64GB DDR3 ECC Registered CL9 PC3-10600 1333MHz RAM is a specs-and-price decision rather than a crowd-consensus one in the memory & ram category. Check the specification table below against one or two close alternatives — on price and spec fit, not on star ratings.
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Currently unavailable on Amazon. Not the same product — 3 in-stock alternatives:
Similar: 【DDR3 RAM】 GIGASTONE 32GB Kit — $88.99 on Amazon as of 2026-10-21 16:25 UTC (price may vary).
Similar: A-Tech 32GB — $83.56 on Amazon as of 2026-10-21 16:22 UTC (price may vary).
Similar: Timetec 32GB KIT(4x8GB) DDR3L / DDR3 1600MHz — $74.99 on Amazon as of 2026-10-21 16:28 UTC (price may vary).
Pros & Cons
Pros
- ✓ COMPATIBLE WITH: Mac Pro MacPro 6,1 2.7GHz 3.0GHz, 3.5GHz, 3.7GHz ME253LL/A - A1481 - 2630
- ✓ Backed by OWC's warranty and support channels
Cons
- ✗ Confirm socket / form-factor / power-rating compatibility against your build before ordering
- ✗ Price, stock, shipping and returns are set by the retailer and may have changed since this page was last updated
SpecPicks Verdict
SpecPicks scored OWC Memory 64GB DDR3 ECC Registered CL9 PC3-10600 1333MHz RAM using a rating × review-volume × price-fit model applied to published specs and reviews across the memory & ram category. OWC's memory & ram lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.
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 retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.
Key Features
- OWC 64.0GB UPGRADE: Consists of a Two 32GB DDR3 1333MHz PC3-10600 CL9 ECC Registered DIMMs 1.5V 240-pin Memory Module with Mac qualified Thermal Sensor EEPROM
- 100% COMPLIANT: With JEDEC Standard Specifications, ROHS Compliant, Warranty Safe Upgrade. Designed and Tested to Meet or Exceed All MAC Specifications for Mac Pro 2013
- COMPATIBLE PART NUMBERS: MT72KSZS4G72PZ‐1G1, HMT84GR7BMR4A‐H9, M393B4G70BM0‐YH9, MT72KSZS4G72PZ‐1G4, HMT84GR7MMR4A‐H9, HMT84GR7AMR4A‐H9, M393B4G70DM0‐YH9
- COMPATIBLE WITH: Mac Pro MacPro 6,1 2.7GHz 3.0GHz, 3.5GHz, 3.7GHz ME253LL/A - A1481 - 2630
- INCREASED PERFORMANCE: Memory Upgrades are the Most Effective and Easy Way to Boost the Performance in Your Mac Pro
- INDUSTRY LEADING: Consumer Friendly Advanced Replacement Program and Limited Lifetime Warranty, which Includes Free Tech Support by Other World Computing
Full Specifications
| Brand | OWC |
|---|---|
| Voltage | 1.5 volts |
| RAM Size | 64 GB |
| Model Name | OWC1333D3Z3M064 13831348 |
| Unit Count | 2 Count |
| Form Factor | DIMM |
| Memory Speed | 666 MHz |
| Model Number | OWC1333D3Z3M064 |
| Compatibility | Mac |
| Number of Pins | 240 |
| COMPATIBLE WITH | Mac Pro MacPro 6,1 2.7GHz 3.0GHz, 3.5GHz, 3.7GHz ME253LL/A - A1481 - 2630 |
| Mfr Part Number | OWC1333D3Z3M064 |
| INDUSTRY LEADING | Consumer Friendly Advanced Replacement Program and Limited Lifetime Warranty, which Includes Free Tech Support by Other World Computing |
| Memory Generation | DDR3 |
| Compatible Devices | Desktop |
| Data Transfer Rate | 1333 MHz |
| Memory Form Factor | RDIMM |
| OWC 64.0GB UPGRADE | Consists of a Two 32GB DDR3 1333MHz PC3-10600 CL9 ECC Registered DIMMs 1.5V 240-pin Memory Module with Mac qualified Thermal Sensor EEPROM |
| Additional Features | Ecc, Lightweight |
| Computer Memory Size | 64 GB |
| Full listing title | OWC Memory 64GB (2X 32GB) DDR3 ECC Registered CL9 PC3-10600 1333MHz RAM | 240-Pin Compatible with Mac Pro (Late 2013 - 2019) Mac Pro 6,1 Models |
Ready to buy?
Amazon shows no buyable offer for OWC Memory 64GB at the last check. A similar in-stock product is 【DDR3 RAM】 GIGASTONE 32GB Kit. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.
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