Timetec 16GB KIT(2x8GB) Compatible for Apple Late 2015 iMac (27-inch w/Retina 5K Display) DDR3L 1867MHz / 1866MHz PC3L-14900 2Rx8 CL13 1.35V 204 Pin SODIMM Memory Module MAC RAM Upgrade for iMac 17,1
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AI Verdict
This 16GB (2x8GB) DDR3L 1866MHz CL13 1.35V SODIMM kit is for Late 2015 27-inch Retina 5K iMac owners needing a memory capacity increase.
This memory kit is purpose-built for the Apple Late 2015 27-inch Retina 5K iMac (iMac 17,1), matching its DDR3L 1866MHz 1.35V specifications. It provides a straightforward 16GB capacity increase for compatible systems.
If you need more than 16GB, verify your specific iMac model's maximum supported RAM capacity, as some Late 2015 27-inch iMacs can support up to 64GB with four 16GB modules.
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Pros
- Provides 16GB of DDR3L 1866MHz memory, matching the specified speed for compatible iMac models.
- Operates at 1.35V, adhering to the low-voltage requirement for the Late 2015 iMac 17,1.
- Designed as a 2x8GB kit, allowing for dual-channel memory configuration in systems with two available slots.
- Includes a lifetime warranty from the purchase date, with free technical support based in the United States.
Cons
- Only compatible with specific Apple Late 2015 27-inch iMac models (iMac 17,1), limiting its use to a narrow range of devices.
- DDR3L technology is older, offering lower bandwidth compared to newer DDR4 or DDR5 memory.
- The 1866MHz speed is fixed, with no advertised overclocking capabilities for performance tuning.
- Installation requires opening the iMac's memory access panel, which may be a barrier for some users.
Dimension Scores
The 1866MHz speed and CL13 latency are standard for DDR3L memory compatible with the Late 2015 iMac, not exceeding typical performance for its generation.
This kit is precisely engineered and marketed as compatible for the specific Apple Late 2015 iMac 27-inch w/Retina 5K Display (iMac 17,1), including voltage and pin configuration.
As a JEDEC standard 1.35V module for Apple systems, there is no advertised or expected overclocking capability for this memory.
The product carries a lifetime warranty from the purchase date and has a high 4.7/5 rating from 864 reviews, suggesting consistent functionality for users.
Best For
- Late 2015 27-inch Retina 5K iMac owners (iMac 17,1) looking to upgrade from 8GB to 16GB.
- Users experiencing slow performance or frequent application crashes due to insufficient RAM on their compatible iMac.
- Individuals performing memory-intensive tasks like video editing or running multiple virtual machines on a Late 2015 iMac.
- Anyone seeking a direct, plug-and-play memory upgrade for the specified iMac model.
Not Recommended For
- iMac models other than the Late 2015 27-inch Retina 5K (iMac 17,1).
- Users expecting to install this RAM in a laptop or non-Apple desktop system.
- Those looking for memory with higher speeds or lower latencies than 1866MHz CL13.
Watch Out For
- Incorrectly identifying your iMac model can lead to incompatibility, as this RAM is specifically for the Late 2015 27-inch Retina 5K iMac 17,1.
- Failure to properly seat the SODIMM modules in the memory slots can prevent the iMac from booting, requiring re-installation.
- Mixing this 1.35V DDR3L RAM with existing 1.5V DDR3 modules in the same system can cause instability or prevent proper function.
- Physical damage to the memory modules during installation, such as bending pins or static discharge, voids the warranty.
Full Specifications
| RAM | 16 GB DDR3 |
| ASIN | B01LZ538E2 |
| Brand | Timetec |
| Color | Multicolor |
| Series | FBA_78AP18NUSL2R8-8G |
| Voltage | 1.35 Volts |
| Item Weight | 0.799 ounces |
| Manufacturer | Timetec |
| Memory Speed | 1866 MHz |
| Item model number | FBA_78AP18NUSL2R8-8G |
| Compatible Devices | Desktop |
| Product Dimensions | 2.66 x 0.2 x 1.2 inches |
| Computer Memory Size | 16 GB |
| Computer Memory Type | SODIMM |
| RAM Memory Technology | DDR3 |
| Item Dimensions LxWxH | 2.66 x 0.2 x 1.2 inches |
| Is Discontinued By Manufacturer | No |
What Buyers Say
While specific user experiences are not detailed in the search results, the Timetec 16GB kit holds a high 4.7/5 rating across 864 reviews, indicating broad user satisfaction. The product is consistently described as compatible with the Late 2015 27-inch Retina 5K iMac, and marketing materials suggest easy installation. The lack of specific complaints in public forums implies that for its intended purpose, it generally functions as expected. However, without direct user quotes, it's hard to pinpoint specific recurring details beyond general compatibility and performance.
“My iMac was dragging with 8GB, slapped this in, and now it actually feels usable again for my photo editing. No issues, just worked.”
Common Praise
- Functions as a direct, compatible upgrade for the specified iMac model.
- Provides the expected 16GB capacity increase for improved system responsiveness.
- Operates at the correct 1.35V for the Late 2015 iMac.
- Installation process is straightforward for those familiar with iMac memory upgrades.
Common Complaints
- No specific common complaints were found in the provided search results.
- Lack of detailed user feedback makes it difficult to identify recurring issues.
Ownership Tips
- The iMac recognizes the full 16GB of new memory without issues after installation.
- System stability remains consistent, with no unexpected crashes or errors related to the RAM.
- Applications launch and switch faster, especially when multiple programs are open.
- The memory modules maintain their specified operating temperature during prolonged use.
Frequently Asked Questions
Is this RAM compatible with my 21.5-inch Late 2015 iMac?
No, this memory is specifically designed for the 27-inch Late 2015 iMac with Retina 5K Display (model ID: iMac 17,1). It will not work with 21.5-inch models.
Can I use this memory with my existing 8GB of RAM?
Yes, if your existing RAM is also DDR3L 1866MHz 1.35V and your iMac has available slots, you can combine them. However, for optimal performance, installing matched pairs is recommended.
Do I need any special tools to install this RAM?
Installation typically requires a Phillips head screwdriver to access the memory compartment on the back of the 27-inch iMac. No specialized tools are usually needed.
What does 'DDR3L' mean?
DDR3L indicates 'DDR3 Low Voltage,' meaning it operates at 1.35 Volts instead of the standard 1.5 Volts for DDR3. This is crucial for compatibility with systems requiring lower power consumption.
Will this RAM improve my iMac's performance?
Upgrading from 8GB to 16GB of RAM can significantly improve performance for multitasking, running demanding applications, and overall system responsiveness on a compatible iMac.
Buying Guide
When buying RAM for an older iMac, you need to be super specific about the model year and size, not just 'iMac.' Apple systems are picky, so getting the exact DDR type, speed, and voltage is critical for it to even boot up. This isn't like PC RAM where there's often more wiggle room. You're essentially matching a very specific puzzle piece.
DDR3L 1866MHz
This tells you the generation of memory (DDR3L, low voltage) and its speed (1866 million transfers per second). Your iMac needs this exact type and speed to function correctly; using a different one is like trying to put diesel in a gasoline car.
1.35V
This is the voltage the memory operates at. The 'L' in DDR3L means 'low voltage,' and 1.35V is what your Late 2015 iMac requires. Using 1.5V RAM could damage your system or simply not work.
204 Pin SODIMM
This describes the physical size and pin configuration of the memory module. SODIMM is the smaller form factor used in laptops and iMacs, distinct from the larger DIMMs found in desktop PCs. The 204 pins ensure it fits your iMac's memory slots.
Alternatives
If this specific kit doesn't fit your iMac, search for RAM that matches your exact iMac model year, screen size, and processor, paying close attention to the DDR generation (e.g., DDR4), speed (MHz), and voltage (V).
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