Timetec
Timetec 32GB Kit (4x8GB) DDR3 1333MHz PC3-10600 CL9 SODIMM Memory Module
Bottom line: The Timetec 32GB Kit DDR3 1333MHz PC3-10600 CL9 SODIMM Memory Module ($74.99 on Amazon as of 2026-10-06): Full 32GB in one kit - four matched 8GB SODIMMs, no mixing brands across slots; main trade-off: will not work in Mid 2010 27-inch iMac11,3 3.2GHz or 21.5-inch iMac11,2 - 4GB max.
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*Price sourced from Amazon.com. Last updated 2026-10-06. Price and availability subject to change.
Pros & Cons
Pros
- ✓ Full 32GB in one kit - four matched 8GB SODIMMs, no mixing brands across slots
- ✓ Lifetime warranty from purchase date plus free technical support
- ✓ Covers iMac11,3, iMac12,1 and iMac12,2 - both A1311 and A1312 chassis
- ✓ Spec-exact for Apple: 1.5V, CL9, unbuffered non-ECC, 204-pin, dual rank 2Rx8
Cons
- ✗ Will not work in Mid 2010 27-inch iMac11,3 3.2GHz or 21.5-inch iMac11,2 - 4GB max
- ✗ DDR3 1333MHz PC3-10600 only - useless in any DDR4 or newer machine
- ✗ CL9 latency is loose by modern standards, set by the 2010-2011 platform
- ✗ 27-inch iMac RAM doors are easy; 21.5-inch models need a full display teardown
Manufacturer description
Pulling a Mid 2010 or Mid 2011 iMac up to its memory ceiling takes four matched modules, and this Timetec 32GB kit ships exactly that: 4x8GB DDR3 1333MHz PC3-10600 204-pin SODIMMs, unbuffered non-ECC, 1.5V, CL9, dual rank 2Rx8. It targets iMac11,3, iMac12,1 and iMac12,2 machines - the 27-inch Mid 2010 and both the 21.5-inch and 27-inch Mid 2011 - covering models A1311 and A1312 and part numbers from MC511LL/A through MD063LL/A, including BTO/CTO configurations. Core i5 chips from 2.5 GHz to 3.6 GHz and Core i7 chips from 2.8 GHz to 3.4 GHz are supported. Read the fitment note carefully…
SpecPicks Verdict
SpecPicks scored Timetec 32GB Kit DDR3 1333MHz PC3-10600 CL9 SODIMM Memory Module using a rating × review-volume × price-fit model applied to published specs and reviews across the memory (ram) category. Timetec'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.
Frequently Asked Questions
Will this 32GB kit work in my Mid 2010 iMac?
Only the 27-inch Mid 2010 iMac11,3 models that support 8GB modules. Timetec specifically warns that the 3.2 GHz 27-inch iMac11,3 and the 21.5-inch iMac11,2 (3.06/3.2/3.6 GHz) support 4GB modules only and will not accept the 8GB sticks in this kit. Check your model identifier under About This Mac before ordering.
How many sticks come in the kit and do I need to use all four?
The kit is 4x8GB - four 8GB DDR3 1333MHz SODIMMs totaling 32GB. Apple iMacs of this era have four SODIMM slots, so installing all four fills the machine completely. You can install fewer, but you would leave capacity unused.
What exact memory spec is this?
DDR3 1333MHz PC3-10600, 204-pin, unbuffered, non-ECC, 1.5V, CL9, dual rank 2Rx8 based on 512x8 die. That matches the factory specification for iMac11,3, iMac12,1 and iMac12,2.
Which iMac part numbers does this cover?
Models A1311 and A1312, with part numbers MC511LL/A, MC784LL/A, MC309LL/A, MC812LL/A, MC813LL/A, MC814LL/A, MD063LL/A, plus BTO/CTO configurations. Supported processors run from the 2.5 GHz Core i5 to the 3.6 GHz Core i5, and the 2.8 GHz, 2.93 GHz and 3.4 GHz Core i7.
Key Features
- NOTE: iMac Mid 2010 27 inch iMac 11,3 (3.2 GHz) and 21.5 inch iMac 11,2 (3.06 GHz/ 3.2 GHz/ 3.6 GHz) ONLY SUPPORT 4GB, DO NOT SUPPORT 8GB.
- Compatible with Apple iMac - 27 inch Mid 2010, 21.5 inch / 27 inch Mid 2011- iMac11,3 iMac12,1 iMac12,2
- Model Number: A1311 A1312 - Part Number(s): MC511LL/A, MC784LL/A, MC309LL/A, MC812LL/A, MC813LL/A, MC814LL/A, MD063LL/A, BTO/CTO
- Supports CPU Processors: 2.5 GHz Core i5, 2.7 GHz Core i5, 2.8 GHz Core i5, 3.1 GHz Core i5, 3.6 GHz Core i5, 2.8 GHz Core i7, 2.93 GHz Core i7, 3.4 GHz Core i7
- DDR3 1333MHz PC3-10600 204 Pin Unbuffered Non-ECC 1.5V CL9 Dual Rank 2Rx8 based 512x8 Module Size: 32GB KIT(4x8GB Modules) Guaranteed Lifetime warranty from Purchase Date Free technical support
Full Specifications
| NOTE | iMac Mid 2010 27 inch iMac 11,3 (3.2 GHz) and 21.5 inch iMac 11,2 (3.06 GHz/ 3.2 GHz/ 3.6 GHz) ONLY SUPPORT 4GB, DO NOT SUPPORT 8GB. |
|---|---|
| Brand | Timetec |
| Voltage | 1.5 volts |
| RAM Size | 32 GB |
| Form Factor | SO-DIMM |
| Memory Speed | 1333 MHz |
| Model Number | 78 |
| Compatibility | Mac |
| Number of Pins | 204 |
| Mfr Part Number | 78 |
| Number of Items | 1 |
| Memory Generation | DDR3 |
| Compatible Devices | iMac |
| Data Transfer Rate | 1333 MHz |
| Memory Form Factor | SODIMM |
| Additional Features | Compatible with MAC |
| Computer Memory Size | 32 GB |
| Warranty Description | Lifetime |
| RAM Memory Technology | DDR3L |
| Supports CPU Processors | 2.5 GHz Core i5, 2.7 GHz Core i5, 2.8 GHz Core i5, 3.1 GHz Core i5, 3.6 GHz Core i5, 2.8 GHz Core i7, 2.93 GHz Core i7, 3.4 GHz Core i7 |
| Full listing title | Timetec 32GB Kit (4x8GB) DDR3 1333MHz PC3-10600 CL9 SODIMM Memory Module for Apple iMac (Mid 2010 27-inch, Mid 2011 21.5/27-inch) MAC RAM Upgrade 11,3 / 12,1 / 12,2 |
Ready to buy?
Timetec 32GB Kit (4x8GB) DDR3 1333MHz PC3-10600 CL9 SODIMM Memory Module for Apple iMac (Mid 2010 27-inch, Mid 2011 21.5/27-inch) MAC RAM Upgrade 11,3 / 12,1 / 12,2 is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.
*Price sourced from Amazon.com. Last updated 2026-10-06. Price and availability subject to change.
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