PickSmartly Review

Best 64 Gb Memory in 2026

9.8 PM Score
Products Evaluated
9
Reviews Analyzed
8,610
Brands Ranked
6
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When you are searching for 64 GB of memory, you are likely looking to bridge the gap between standard computing and high-performance multitasking. Whether you are upgrading a workstation for video editing, expanding a gaming rig to handle modern AAA titles, or seeking massive storage capacity for a mobile device, the 64 GB threshold represents a significant tier of capability. However, '64 GB' is a capacity metric that applies to vastly different hardware architectures—from desktop RAM and laptop modules to high-speed SD cards and external SSDs. To make a smart purchase, you must look beyond the raw number and understand the underlying technology that dictates how that memory actually performs in your specific ecosystem.

Editor's Choice

Our Top Picks for 64 Gb Memory

The three standouts our editors recommend first — ranked by performance, value, and real-world reviews.

OWC 64GB (2 x 32.0GB) 2400MHz DDR4 PC4-19200 SO-DIMM 260 Pin CL17 Memory Module Compatible with Mac Mini (Late 2018) (OWC2400DDR4S64P)

OWC 64GB DDR4 Memory Kit for Mac Mini and iMac

4.7 (1,614 ratings)
OWC OWC2400DDR4S64P

Reviews for OWC (PM Score)

9.8 PM Score
Buy on Amazon
  • 2 x 32 GB (64 GB) PC19200 DDR4 2400MHz SO-DIMM Memory, 260-Pin, 1.2 Volts, Non-registered, Non-ECC, Fully compliant with JEDEC specifications, ROHS compliant, warranty safe upgrade. Backed by OWC Memory Lifetime Limited Warranty including the OWC Lifetime Advanced Replacement Program
  • Memory Upgrade Compatible with 2017 iMac: iMac w/Retina 5K display (27 inch mid 2017) Model ID: iMac18,3 (3.4GHz & 3.5GHz & 3.8GHz Core i5 & 4.2GHz Core i7)
  • Memory Upgrade Compatible with 2017 iMac 21.5-inch: Model ID: iMac18,2 iMac w/Retina 4K display, 21.5-inch Mid 2017, (3.0GHz & 3.4GHz Core i5 & 3.6GHz Core i7)
  • Memory Upgrade Compatible with 2018 Mac mini: Mac mini (Late 2018) (November, 2018) Model ID: Macmini8,1 (3.6GHz i3, 3.0GHz i5, 3.2GHz i7) Models: MRTR2LL/A, MRTT2LL/A
  • Compatible with select PC Laptop, PC Notebook, & All in One Computers
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
OWC (Other World Computing) 9.81 Yes Yes Yes

The OWC 64GB DDR4 Memory Kit stands as the definitive performance upgrade for aging Mac Mini and iMac setups. If you are running a Late 2018 Mac Mini or a 2017 iMac, this kit breathes immediate life into your workstation by expanding your capacity to a massive 64GB. I found the 2400MHz speed and 1.2V operation to be perfectly tuned for seamless integration, adhering strictly to JEDEC specifications for a hassle-free installation. It is not just about the raw capacity. It is about the reliability that comes with OWC's lifetime limited warranty and advanced replacement program. Whether you are tackling heavy multitasking on a desktop or upgrading a compatible PC notebook, this SO-DIMM kit provides the stability needed for professional-grade workflows.

What We Like
64GB total capacity
2400MHz DDR4 speed
Lifetime limited warranty
JEDEC compliant
Low 1.2V power
#2

OLOy Memory DDR4 RAM 64GB (2x32GB) 3200 MHz CL16 1.35V 288-Pin Desktop Gaming UDIMM (MD4U323216DJDA)

OLOy 64GB DDR4 3200MHz Desktop Memory Kit

4.6 (6,977 ratings)
OLOY MD4U323216DJDA 5.25 X 1.53 X 0.30 Inches 0.09 Pounds

Reviews for OLOY (PM Score)

9.8 PM Score
Buy on Amazon
  • DDR4 2x32GB UDIMM, total 64 GB
  • Frequency : 3200 MHz CL16-20-20-38
  • 1.35V UDIMM (Intel XMP 2.0 Automated Overclocking Technology)
  • Lifetime Warranty
  • Compatible with Intel and AMD
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
OLOy Memory 9.73 Yes Yes Yes

Content creators and heavy multitaskers demanding massive headroom will find this OLOy 64GB kit to be an absolute lifesaver for their workstation builds. Instead of struggling with memory bottlenecks during intensive video rendering or complex simulation tasks, this dual-channel 32GB module setup provides a massive pool of high-speed resources. Running at 3200 MHz with tight CL16 timings, it delivers the snappy responsiveness needed for modern gaming and professional workloads alike. Setting it up is incredibly straightforward thanks to Intel XMP 2.0 support, which handles the overclocking automation for you at a stable 1.35V. It is a versatile, high-capacity solution that plays nice with both Intel and AMD platforms, backed by a lifetime warranty that provides serious peace of mind for your long-term hardware investment.

What We Like
64GB total capacity
3200 MHz frequency
Low CL16 latency
Intel XMP 2.0 support
Lifetime warranty

Kingston KTD-PE432/64G DDR4-64 GB - DIMM 288-pin - 3200 MHz / PC4-25600 - CL22-1.2 V - Registered - ECC - for Dell PowerEdge R6515, Dell EMC PowerEdge...

Kingston 64GB DDR4-3200 Registered ECC Memory

KINGSTON KTD-PE432/64G 19.69 X 19.69 X 11.02 Inches 0.04 Pounds

Reviews for KINGSTON (PM Score)

5.2 PM Score
Buy on Amazon
  • Memory Size: 64 GB
  • Memory Technology: DDR4 SDRAM
  • Memory Voltage: 1.20 V
  • Number of Modules: 1 x 64 GB
  • Memory Speed: 3200 MHz
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
MegaRetailStore 9.73 No No No

You might wonder if a single high-capacity module is truly worth the investment compared to smaller sticks, but this Kingston 64GB DIMM is designed specifically to solve density problems in enterprise environments. After testing its compatibility within high-performance server architectures like the Dell PowerEdge R6515, the stability provided by the Registered ECC technology becomes immediately apparent. Running at 3200 MHz with a low 1.2V power draw, it strikes a professional balance between raw speed and thermal efficiency. It is not a consumer-grade upgrade for a gaming rig. Rather, it is a specialized component meant to bolster uptime and data integrity in mission-critical workloads. For anyone managing heavy server loads, this module offers the reliable headroom needed to prevent bottlenecks.

What We Like
64GB capacity
3200 MHz speed
Registered ECC support
Low 1.2V voltage
DDR4 SDRAM technology
#4

A-Tech 64GB Kit (4x16GB) RAM for Apple Mac Pro Late 2013 | DDR3 1866MHz PC3-14900R ECC RDIMM 2Rx4 1.5V 240-Pin Registered DIMM Memory Upgrade

A-Tech 64GB DDR3 RAM Kit for Mac Pro Late 2013

A-TECH AMZUS4-0000245 6.80 X 4.00 X 1.50 Inches 0.44 Pounds

Reviews for A-TECH (PM Score)

4.9 PM Score
Buy on Amazon
  • A-Tech Memory (RAM) compatible for the Apple Mac Pro Late 2013 (MacPro6,1 A1481), Part Numbers: ME253LL/A (Quad-Core 3.7 GHz), MD878LL/A (6-Core 3.5 GHz), MQGG2LL/A (8-Core 3.0 GHz), Configure-to-order (12-Core 2.7GHz)
  • 64 GB RAM Kit (4 x 16GB Modules). DDR3 DIMM 240-Pin. Speeds up to 1866/1867-MHz, PC3-14900/PC3-14900R
  • ECC Registered RDIMM. 2Rx4 (Dual Rank x4). JEDEC DDR3 standard 1.5V
  • Improves performance by expanding your system's memory (RAM) capacity, allowing your system to take on more while maintaining a fast and smooth experience
  • This memory is ECC RDIMM and can not be mixed with modules of a different ECC type such as ECC UDIMM, ECC LRDIMM, or Non-ECC UDIMM
  • All A-Tech memory modules undergo stringent quality control testing to ensure dependable and reliable performance (Please refer to your system's manual for proper installation guidelines)
  • Backed by A-Tech's Limited Lifetime Warranty and supported by our knowledgeable Tech Team available to help before and after your purchase
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
A-Tech Components 9.91 Yes Yes Yes

Creative professionals clinging to the legendary Late 2013 Mac Pro need this specific 64GB upgrade to keep their heavy multitasking workflows from grinding to a halt. This kit provides four 16GB modules of ECC Registered RDIMM memory, specifically engineered to match the high-performance requirements of the MacPro6,1 architecture. Because these are 1866MHz PC3-14900R modules, they offer the exact speed and dual-rank density required for a seamless stability boost. You cannot mix these with standard UDIMMs, so this all-in-one kit is a lifesaver for ensuring compatibility. It transforms an aging workstation into a much more capable machine for video editing or complex rendering, all while backed by a lifetime warranty that provides real peace of mind during the installation process.

What We Like
64GB total capacity
ECC Registered RDIMM
1866MHz high speed
Four module kit
Lifetime warranty
#5

Kingston Technology ValueRAM 64 GB Kit of 4 (4x16 GB Modules) 1333MHz DDR3 PC3-10600 ECC Reg CL9 DIMM DR x4 1.35V (KVR13LR9D4K4/64)

Kingston Technology ValueRAM 64GB DDR3 ECC Registered Memory Kit

KINGSTON TECHNOLOGY KVR13LR9D4K4/64 13.00 X 4.50 X 0.10 Inches 0.09 Pounds
  • Kit of 4 16 GB modules of 1333MHz DDR3 Memory
  • Specifically designed and tested for compatibility in various devices
  • 240-Pin Registered DIMM
  • From the industry leader in PC Memory
  • Backed by a lifetime warranty and free technical support
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
A-Tech Components 9.91 No No No

The Kingston Technology ValueRAM 64 GB Kit delivers massive capacity through four highly stable 16 GB modules. This isn't your standard consumer desktop RAM. It is a specialized 240-pin Registered DIMM kit designed to bring enterprise-grade reliability to high-demand systems. Because these modules feature ECC (Error Correction Code) technology, they are perfect for workstations or servers where data integrity is non-negotiable. I was impressed by the fact that Kingston specifically tests these for compatibility, which takes a lot of the guesswork out of upgrading older hardware architectures. Even though DDR3 is an older standard, having 64 GB of stable, low-voltage 1.35V memory backed by a lifetime warranty makes this a rock-solid investment for keeping legacy professional rigs running smoothly.

What We Like
64GB total capacity
ECC error correction
Registered DIMM design
Low 1.35V voltage
Lifetime warranty
#6

Kingston Technology 64 GB 1600 MHz DDR3 Reg ECC DIMM Memory for HP/Compaq Server (KTH-PL316K4/64G)

Kingston Technology 64GB DDR3 ECC Server Memory

KINGSTON TECHNOLOGY KTH-PL316K4/64G 13.00 X 4.50 X 0.10 Inches 0.24 Pounds
  • Four 16GB Modules of 1600 MHZ DDR3 Memory for HP/Compaq Servers
  • Backed by a lifetime warranty and free technical support
  • From the industry leader in PC memory
  • Designed and tested for compatibility in various HP/Compaq servers
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
ZMAX TECH 5.27 No No No

The Kingston Technology 64GB DDR3 kit delivers massive capacity through four high-performance 16GB modules specifically tuned for HP and Compaq server environments. Upgrading your server infrastructure shouldn't feel like a gamble, which is why this kit stands out. It is rigorously designed and tested to ensure seamless compatibility with existing hardware. As an industry leader in memory solutions, Kingston provides a level of reliability that is essential for mission-critical server uptime. You aren't just buying silicon here. You are getting the peace of mind that comes with a lifetime warranty and access to free technical support. This is a professional-grade stability upgrade for anyone looking to maximize their server's multitasking capabilities without the headache of compatibility errors.

What We Like
Four 16GB modules
1600 MHz speed
Reg ECC support
Lifetime warranty
HP/Compaq compatible
#7

HP Elitepad 1000 G2, 10.1" Windows Tablet, 64 GB, Black/Silver (G4T13UT#ABA)

HP Elitepad 1000 G2 Windows Tablet

HP G4T13UT#ABA 16.50 X 9.90 X 2.80 Inches 1.50 Pounds

Reviews for HP (PM Score)

3.5 PM Score
Buy on Amazon
  • Sleek and elegant
  • Powerful productivity
  • It ready
  • Security from the start
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazing Inc. (We record serial number) 5.94 No No No

Can a compact tablet actually serve as a serious mobile workstation? The HP Elitepad 1000 G2 aims to answer that by blending a sleek, elegant design with the raw power needed for real productivity. While testing this 10.1-inch device, the immediate impression is one of readiness. It feels like a tool built to jump straight into your workflow without hesitation. The black and silver finish gives it a professional edge that stands out in a sea of plastic competitors. Beyond the aesthetics, the built-in security features provide peace of mind from the very first boot-up, making it a reliable companion for anyone needing to handle sensitive tasks on the move without sacrificing style.

What We Like
Sleek elegant design
Powerful productivity
Built-in security
Ready for work
Windows operating system
#8

A-Tech 64GB Kit (2x32GB) 4Rx4 PC4-17000 Load Reduced (PC4-2133P-L) ECC LRDIMM 288-Pin DDR4-2133 Quad Rank Server Memory RAM

A-Tech 64GB DDR4 ECC LRDIMM Server Memory Kit

A-TECH AT32G2D4D2133LQ4N12V

Reviews for A-TECH (PM Score)

0.0 PM Score
Buy on Amazon
  • 64 GB Kit ( 2 x 32 GB Modules ) | DDR4 2133 MHz ( PC4-17000 / PC4-2133P-L ) | DDR4 DIMM ( 288-Pin ) | ECC Load Reduced ( ECC LRDIMM ) SERVER Memory RAM Upgrade
  • 4Rx4/4DRx4 DDP Quad Rank x4 Based 288-Pin Load Reduced DIMM 1.2V - JEDEC DDR4 Standard Voltage
  • Designed for ECC LRDIMM Compatible Servers/Workstations (Rated Speeds & ECC Capabilities are CPU Dependent). Not Compatible with Desktops/Laptops.
  • ECC Types can not be mixed | All installed modules must be ECC LRDIMMs in order to function properly | A maximum of eight ranks per memory channel can be installed at once
  • All A-Tech memory modules undergo stringent quality control testing to ensure dependable and reliable performance
  • Backed by A-Tech's Limited Lifetime Warranty + Tech Support Team available to help before and after your purchase
  • Compatible With (but not limited to) Select Server/Workstation Models: PowerEdge, Precision, StoreEasy, ProLiant, Apollo, ThinkServer, ThinkStation, ThinkSystem, System X
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
A-Tech Components 9.91 No No No

Server downtime caused by memory errors is a nightmare that this A-Tech 64GB kit is specifically engineered to prevent. By utilizing Load Reduced ECC technology, these dual 32GB modules provide the high-density stability required for heavy-duty workstations and enterprise-grade servers. I found that the quad-rank architecture is a massive win for users running PowerEdge or ProLiant systems that demand massive throughput. It is important to remember that this is specialized hardware. You cannot simply drop these into a standard desktop. However, for those managing Precision or ThinkSystem environments, the stringent quality control and JEDEC standard voltage make this a dependable upgrade. It effectively bridges the gap between high capacity and mission-critical reliability.

What We Like
64GB total capacity
ECC LRDIMM technology
Quad rank modules
Server compatible
Low voltage operation

OWC 64GB (2 x 32GB) PC21300 DDR4 2666MHz SO-DIMMs Memory Compatible with Mac Mini 2018, iMac 2019 and up, Dell, HP, Lenovo, ASUS and Compatible PCs (O...

OWC 64GB DDR4 2666MHz SO-DIMM Memory Kit

OWC OWC2666DDR4S64P 19.69 X 19.69 X 11.02 Inches

Reviews for OWC (PM Score)

0.0 PM Score
Buy on Amazon
  • 2 x 32 GB (64 GB) 2666MHz DDR4 PC4-21300 SODIMM 260-Pin, 1.2 Volts, Non-registered, Non-ECC, Fully compliant with JEDEC specifications, ROHS compliant, warranty safe upgrade. Backed by OWC Memory Lifetime Limited Warranty including the OWC Lifetime Advanced Replacement Program
  • Memory Upgrade Compatible with 2020 iMac: iMac w/Retina 5K display (27 inch mid 2020) Model ID: iMac20,1 and iMac20,2 (3.1GHz i5, 3.3GHz i5, 3.8GHz i7, 3.6GHz i9)
  • Memory Upgrade Compatible with 2019 iMac: iMac w/Retina 5K display (27-inch Early 2019) Model ID: iMac19,1 (3.0GHz i5, 3.1GHz i5, 3.7GHz i5, 3.6GHz i9) Models: MRQY2LL/A, MRR02LL/A, MRR12LL/A
  • Memory Upgrade Compatible with 2018 Mac mini: Mac mini (Late 2018) (November, 2018) Model ID: Macmini8,1 (3.6GHz i3, 3.0GHz i5, 3.2GHz i7) Models: MRTR2LL/A, MRTT2LL/A
  • PC compatible: works with compatible gaming laptops and PC desktops: Dell, HP , Toshiba, ASUS, Acer, Supermicro, Fujitsu, Gigabyte, Intel, Lenovo, LG, Samsung, Sony, Supermicro
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
OWC (Other World Computing) 9.82 Yes Yes Yes

This OWC 64GB memory kit is a powerhouse upgrade for anyone feeling the squeeze of modern multitasking on their aging Mac or PC. By swapping in these two 32GB modules, you can breathe massive new life into a 2018 Mac mini or a 27-inch Retina 5K iMac from 2019 or 2020. I love how these sticks follow JEDEC specifications perfectly, ensuring they run reliably at 1.2 Volts without any compatibility headaches. Whether you are a creative professional running heavy workloads on a Mac or a gamer looking to stabilize a Dell or ASUS laptop, this kit provides a seamless, high-capacity boost. Plus, the lifetime limited warranty and advanced replacement program offer real peace of mind for such a critical hardware investment.

What We Like
64GB total capacity
Lifetime limited warranty
JEDEC compliant
Dual 32GB modules
Low 1.2V power
Buying Guide

A Guide to Selecting the Best 64 GB Memory

A Guide to Selecting the Best 64 GB Memory

Identify the Form Factor and Interface

The most critical mistake in selecting memory is ignoring the physical and logical interface. If you are buying system RAM, you must distinguish between DIMM (Desktop In-line Memory Module) and SO-DIMM (Small Outline DIMM) used in laptops and mini-PCs. Furthermore, you must ensure compatibility with your motherboard's generation. Attempting to install DDR5 memory into a DDR4 slot is physically impossible due to notch placement, and even if the capacity is correct, the electrical signaling is incompatible. For storage-based memory like SD cards or micro SD cards, ensure the interface supports the speed class required by your device. For instance, a 64 GB card that lacks UHS-I or V30 ratings will struggle to record 4K video, regardless of its capacity.

Understand Latency and Clock Speeds

For system memory, capacity is only half of the performance equation. The speed, measured in MHz or MT/s, determines how quickly data is transferred between the CPU and the RAM. A 64 GB kit with higher clock speeds will significantly reduce bottlenecks in data-heavy tasks like 3D rendering or heavy multitasking. Equally important is CAS Latency (CL), which measures the delay between a command being sent and the data being available. In high-performance builds, you want a balance: high frequency paired with low latency. For storage memory, look for 'Read' and 'Write' speeds. A 64 GB drive with high read speeds is great for loading games quickly, but if you are a photographer, you need high sustained write speeds to move large files from your camera to your computer without lag.

Differentiate Between RAM and Storage

It is easy to get confused by the term 'memory' when it is used interchangeably for both volatile RAM and non-volatile storage. If you are upgrading a computer to prevent crashes during heavy workloads, you are looking for RAM. If you are looking to add more room for photos, apps, and files, you are looking for storage (SD cards, SSDs, or flash drives). 64 GB of RAM is a massive amount of workspace for running dozens of browser tabs and professional software simultaneously, whereas 64 GB of storage is a relatively modest amount of space in the modern era, best suited for mobile devices or specialized industrial equipment.

Reliability and Error Correction

If your goal for acquiring 64 GB of memory is professional-grade stability—such as for a server or a high-end workstation—you should investigate whether you need ECC (Error Correction Code) memory. ECC memory can detect and fix single-bit memory errors, preventing system crashes and data corruption. While standard consumer-grade memory is highly reliable, professional environments demand this extra layer of protection. For storage-based memory, look for brands that offer long-term warranties and high TBW (Terabytes Written) ratings, which indicate how much data can be written to the device before the flash cells begin to degrade.

Recommendation Logic

When deciding, follow this logic: First, confirm your hardware's physical requirements (DDR4 vs DDR5, DIMM vs SO-DIMM, or SD vs MicroSD). Second, define your primary use case. If you are a gamer, prioritize high frequency and low latency. If you are a mobile photographer, prioritize write speeds and ruggedness. Finally, always check for compatibility lists provided by your device manufacturer to ensure the specific timing and voltage requirements of the memory module match your system's capabilities.

Ready to choose?

Jump back to our ranked picks or compare the shortlist side by side.

Frequently Asked Questions

Quick answers about 64 Gb Memory before you buy.

For most modern AAA titles, 64GB is more than sufficient and provides a significant buffer for multitasking, streaming, or running heavy background applications simultaneously.

DDR5 offers significantly higher bandwidth and faster data transfer rates compared to DDR4, though it requires a compatible motherboard and CPU to function.

It won't make your processor faster, but it prevents system slowdowns caused by 'swapping' data to your hard drive when your RAM capacity is exhausted.

While it is possible, it is highly recommended to use a single matched kit to ensure stability and optimal performance at rated speeds.

For DDR4, 3200MHz to 3600MHz is the sweet spot. For DDR5, aim for 5600MHz or higher depending on your CPU's capabilities.

While more capacity allows for better efficiency by reducing disk usage, the slight increase in power draw from the extra modules is generally negligible for most users.

Using two 32GB sticks is generally preferred as it places less stress on the CPU's memory controller and allows for easier future upgrades.

Heat spreaders are beneficial for high-performance kits running at high voltages, as they help dissipate heat during intensive workloads or long gaming sessions.
Research & Insights

Our Analysis of 64 Gb Memory

8,610 Reviews Analyzed
9 Products Evaluated
4.6 Avg PM Score
6 Brands Ranked

Top 10 64 Gb Memory Brands on Amazon

Share of top-ranked products by brand, from our editorial analysis.

  1. 01 A-Tech 2 (22.2%)
  2. 02 Kingston Technology 2 (22.2%)
  3. 03 Owc 2 (22.2%)
  4. 04 Hp 1 (11.1%)
  5. 05 Kingston 1 (11.1%)
  6. 06 Oloy 1 (11.1%)

What Our Analysis Found

We've carried out a comprehensive analysis of 8,610 reviews on 64 Gb Memory, using our selection criteria to identify the best options in the computers & accessories. Our findings reveal that most customers typically select 64 Gb Memory priced around $164.75.

Our team of expert editors reviewed these high-quality items and handpicked the top 9 64 Gb Memory for your consideration..

We are dedicated to assisting our users in finding the right memory Products based on their needs, saving them considerable time when choosing which 64 Gb Memory to buy. We take pride in the number of satisfied users we've helped through our thorough and insightful reviews.