64MB Cache or 128MB Cache NAS Hard Drives? Compared by Specs
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You are comparing a 64MB Cache vs 128MB Cache NAS hard drive from two different manufacturers. Both drives offer 3.5-inch form factors and SATA 6Gb/s interfaces for reliable connectivity. The main difference lies in their capacity and cache size. The Western Digital option provides 1TB storage with a smaller buffer, while the Seagate model offers 4TB capacity and double the cache memory for data handling.
Key differences
| Aspect | Western Digital AV-GP 1TB 3.5-Inch Hard Drive | Seagate Enterprise 4TB Internal Hard Drive |
|---|---|---|
| Storage Capacity | 1TB | 4TB |
| Cache Size | 64MB | 128MB |
| Rotational Speed | 5400RPM~7200RPM | 7200RPM |
| Form Factor | 3.5in | 3.5in |
| Hardware Interface | SATA 6Gb/s | SATA 6Gbps |
Which one should you choose?
Choose Western Digital AV-GP 1TB 3.5-Inch Hard Drive if
- You need a lower-capacity drive for basic surveillance or light NAS tasks.
- You prefer a drive with variable rotational speeds for potentially lower power consumption.
Choose Seagate Enterprise 4TB Internal Hard Drive if
- You require higher storage capacity for a larger NAS or server setup.
- You want faster rotational speeds and a larger cache for improved performance.
Verdict: The Seagate drive offers more capacity and faster specs for demanding environments. The Western Digital drive suits users who need less storage and simpler operation. Your choice depends on whether capacity or speed is your priority.
Cache Size and Performance Specs
Cache Size
The Seagate Enterprise drive features a 128MB cache, while the Western Digital AV-GP offers 64MB. Cache memory acts as a buffer between the drive’s platters and the system’s RAM. A larger cache allows the drive to store more frequently accessed data, which can reduce latency during heavy read and write operations. For NAS environments handling multiple concurrent requests, the 128MB buffer on the Seagate model provides a clear advantage in managing data flow efficiently. The Western Digital drive’s smaller cache may result in slightly longer wait times when processing large bursts of data.
Rotational Speed
The Seagate drive spins at a constant 7200 RPM, whereas the Western Digital AV-GP uses IntelliPower technology with a variable speed ranging from 5400 RPM to 7200 RPM. Higher rotational speeds generally translate to faster data access times and improved performance for active workloads. The Seagate’s fixed 7200 RPM ensures consistent performance for demanding tasks. The Western Digital drive’s variable speed is designed to balance performance with power efficiency and heat reduction, which is beneficial for surveillance or lower-intensity NAS use cases where constant high speed is not required.
Storage Capacity
The Western Digital drive provides 1TB of storage, while the Seagate model offers 4TB. This fourfold difference in capacity is significant for users planning to store large media libraries, extensive backups, or numerous virtual machines. The Seagate drive allows you to consolidate more data onto a single unit, potentially reducing the number of drives needed in your NAS enclosure. The Western Digital drive is suitable for smaller setups or secondary storage needs where maximum capacity is less critical than other factors like power consumption or specific surveillance optimizations.
Form Factor
Both drives utilize a standard 3.5-inch form factor. This is the standard size for desktop hard drives and most internal NAS bays. Because they share the same physical dimensions, both drives are compatible with the same range of enclosures and mounting systems. You do not need to worry about physical fitment issues when choosing between these two options, as they will both fit into standard 3.5-inch drive bays found in most consumer and enterprise NAS devices. This makes the decision based entirely on performance and capacity rather than physical constraints.
Hardware Interface
Both drives use the SATA 6Gb/s interface, ensuring backward compatibility with older SATA ports and forward compatibility with newer ones. This standard interface provides a maximum theoretical bandwidth of 600 MB/s, which is sufficient for the rotational speeds of these drives. Neither drive offers a faster interface like SAS or NVMe, but for most NAS applications, SATA 6Gb/s is the industry standard. This commonality means you can swap between these drives in compatible systems without needing additional adapters or dealing with interface bottlenecks.
Which NAS Drive Should You Choose
Users needing high capacity for large data sets
This Seagate drive offers 4TB of storage, which is four times the capacity of the Western Digital option. The 128MB cache helps manage larger file transfers more efficiently. Its 7200RPM speed provides consistent performance for heavy workloads, making it ideal for storing extensive media libraries or critical business archives without running out of space.
Budget-conscious users with modest storage requirements
The Western Digital drive provides 1TB of storage, which suits users who do not need massive capacity. Its 64MB cache is sufficient for basic surveillance or light media streaming tasks. The lower rotational speed range helps reduce power consumption and heat generation, making it a practical choice for smaller, less demanding network storage setups.
Users prioritizing speed and enterprise-grade reliability
This Seagate model features a fixed 7200RPM rotational speed, ensuring faster data access times compared to the variable speed of the Western Digital drive. The larger 128MB cache buffers data more effectively during high-intensity operations. Designed for 24/7/365 heavy-duty use, it offers greater reliability for servers and RAID arrays where consistent performance is critical.
Quick picks
| # | Product | Best for | Price |
|---|---|---|---|
| 1 | Western Digital AV-GP 1TB 3.5-Inch Hard Drive | surveillance and basic NAS storage | Check price of Western Digital AV-GP 1TB 3.5-Inch Hard Drive on Amazon |
| 2 | Seagate Enterprise 4TB Internal Hard Drive | 24/7 NAS and server environments | Check price of Seagate Enterprise 4TB Internal Hard Drive on Amazon |
The products compared
Western Digital AV-GP 1TB 3.5-Inch Hard Drive
Best for: surveillance and basic NAS storage
- Cache Size
- 64MB Cache (what this guide is about)
- Storage Capacity
- 1TB
- Form Factor
- 3.5in
- Hardware Interface
- SATA 6Gb/s
- Rotational Speed
- 5400RPM~7200RPM
- Dimensions
- 4.8 × 4 × 1 inches
View on Amazon: Western Digital AV-GP 1TB 3.5-Inch Hard Drive Affiliate link
This Western Digital drive offers 1TB of storage with a 64MB cache and IntelliPower rotation. It uses a SATA 6Gb/s interface and fits in a 3.5-inch bay. The design supports 24/7 operation and targets surveillance or NAS use. You get lower power consumption and heavy-duty performance. It suits users needing reliable bulk storage for media or network systems.
Pros
- 64MB cache for data buffering
- SATA 6Gb/s interface speed
- Designed for 24/7 operation
- 1TB storage capacity
Cons
- Lower 64MB cache compared to 128MB competitors
- IntelliPower speed is variable, not fixed 7200RPM
- Smaller 1TB capacity limits large libraries
Good fit if
- You need affordable 1TB storage for surveillance
- You prioritize 24/7 reliability over peak speed
- You are building a basic NAS setup
Skip if
- You require 128MB cache for heavy workloads
- You need faster fixed 7200RPM rotation
- You want more than 1TB capacity
Verdict: WD 1TB 64MB Cache Surveillance HDD provides steady performance for light NAS tasks but lags behind 128MB cache drives in buffering capacity.
Seagate Enterprise 4TB Internal Hard Drive
Best for: 24/7 NAS and server environments
- Cache Size
- 128MB Cache (what this guide is about)
- Storage Capacity
- 4TB
- Form Factor
- 3.5"
- Hardware Interface
- SATA 6Gbps
- Rotational Speed
- 7200RPM
- Dimensions
- 5.87 × 4.01 × 1.03 inches
View on Amazon: Seagate Enterprise 4TB Internal Hard Drive Affiliate link
This Seagate drive offers 4TB of storage with a 128MB cache and 7200RPM rotational speed. The 128MB cache helps manage data flow more efficiently than smaller caches. Its enterprise-grade build supports 24/7 operation in NAS or server environments. You get SATA 6Gbps connectivity for reliable data transfer. This drive suits users needing high capacity and consistent performance for heavy workloads.
Pros
- 128MB cache size for improved data buffering
- 7200RPM rotational speed for faster access times
- 4TB storage capacity for large file libraries
- Enterprise-grade design for 24/7 reliability
Cons
- Heavier build at 1.54 pounds
- Higher power consumption from 7200RPM speed
- Larger physical dimensions than 2.5-inch drives
Good fit if
- You need 128MB cache for heavy multitasking
- You run a 24/7 NAS or server
- You prioritize speed over quiet operation
Skip if
- You require silent operation for a home office
- You have limited space for a 3.5-inch drive
- You need a drive for a laptop
Verdict: Seagate 4TB 128MB Cache Enterprise HDD delivers robust performance for users who need large capacity and fast data handling. It fits well in dedicated server or NAS setups where 24/7 uptime is critical.
Specifications side by side
| Spec | Western Digital AV-GP 1TB 3.5-Inch Hard Drive | Seagate Enterprise 4TB Internal Hard Drive |
|---|---|---|
| Storage Capacity | 1TB | 4TB |
| Form Factor | 3.5in | 3.5" |
| Hardware Interface | SATA 6Gb/s | SATA 6Gbps |
| Rotational Speed | 5400RPM~7200RPM | 7200RPM |
| Cache Size | 64MB | 128 MB |
| Dimensions | 4.8 × 4 × 1 inches | 5.87 × 4.01 × 1.03 inches |
| Weight | not stated | 1.54 pounds |
| Size | 1 TB | 4 TB |
| Color | Silver | silver |
| Model | WD10EURX-OEM-2YR-cr | ST4000NM0033-cr |
Frequently asked questions
Does 128MB cache make a NAS drive faster?
Yes, a larger cache improves data handling efficiency. The Seagate Enterprise drive uses 128MB of cache memory to buffer data between the platters and system RAM. This helps manage larger file transfers more smoothly than drives with smaller buffers, such as the 64MB Western Digital model.
Is 64MB cache enough for basic NAS storage?
It is sufficient for light NAS tasks and surveillance. The Western Digital AV-GP drive provides steady performance for basic storage needs with its 64MB cache. However, it lags behind 128MB cache drives in buffering capacity, making it less ideal for heavy data workloads or large file transfers.
What is the difference between 64MB and 128MB cache?
The difference is the amount of temporary storage available for data buffering. The Seagate drive offers 128MB, while the Western Digital option has 64MB. A larger cache allows the drive to store more data temporarily, which can enhance performance during intensive operations compared to the smaller 64MB buffer.
Can I use a 64MB cache drive in a NAS?
Yes, you can use it for basic or surveillance applications. The Western Digital AV-GP drive is designed for surveillance and basic NAS storage. It features a 3.5-inch form factor and SATA interface, ensuring compatibility with standard NAS setups, though it offers lower buffering capacity than 128MB alternatives.
Which is better for 24/7 server environments?
The Seagate Enterprise drive is better suited for continuous operation. It features a 128MB cache and 7200 RPM rotational speed for robust performance. This drive fits well in dedicated server or NAS setups where 24/7 uptime is critical, offering more capacity and faster data handling than the Western Digital AV-GP.
Does cache size affect NAS reliability?
Cache size impacts performance efficiency rather than hardware reliability. A 128MB cache, like the one in the Seagate drive, helps manage data flow more effectively during large transfers. While the 64MB cache in the Western Digital drive is adequate for light tasks, it provides less buffering for sustained heavy workloads.