What to think about laptop hard drives: full analysis of purchase and performance
With the popularity of remote working and online education, laptop computers have become one of the hot topics recently. Many users pay more attention to hard drive performance when purchasing or upgrading laptops. This article will focus on core issues such as hard drive type, capacity, and performance indicators, and use structured data to provide you with practical guidance.
1. Comparison of hard drive types

| Type | Reading speed | writing speed | Earthquake resistance | Price (500GB) |
|---|---|---|---|---|
| Mechanical hard disk (HDD) | 80-160MB/s | 60-120MB/s | Poor | 200-300 yuan |
| SATA SSD | 400-550MB/s | 300-500MB/s | Excellent | 400-600 yuan |
| NVMe SSD | 2000-3500MB/s | 1500-3000MB/s | Excellent | 600-1000 yuan |
2. Capacity selection suggestions
According to the e-commerce platform sales data in the past 10 days:
| Usage scenarios | Recommended capacity | Proportion (Q2 2023) |
|---|---|---|
| Daily office | 256GB-512GB | 42% |
| design clip | 1TB-2TB | 28% |
| Games and entertainment | 512GB-1TB | 25% |
| Server purpose | 4TB+ | 5% |
3. Interpretation of key performance indicators
1.IOPS value: Random read and write capability indicators, ordinary SSD is about 50,000-80,000, high-end NVMe can reach 500,000+
2.TBW life: Total write volume, TBW of mainstream 512GB SSD is 300-600TB
3.cache design:SLC cache size directly affects the stability of large file transfer
| Brand model | sequential reading | Write sequentially | 4K random read | TBW |
|---|---|---|---|---|
| Samsung 980 Pro | 7000MB/s | 5000MB/s | 1000K IOPS | 600TB |
| Western Digital SN570 | 3500MB/s | 3000MB/s | 460K IOPS | 400TB |
| To Titanium TiPlus5000 | 3500MB/s | 3000MB/s | 400K IOPS | 320TB |
4. Recent hot technology trends
1.PCIe 4.0 popularization: New notebooks are starting to be equipped with speeds up to twice that of PCIe 3.0
2.QLC particles: Lower cost but shorter lifespan, triggering consumer discussion
3.Dual hard drive solution: Search volume for SSD+HDD combination configuration increased by 35% monthly
5. Precautions when purchasing
1. Confirm the interface type supported by the notebook (SATA/M.2)
2. Check physical size compatibility (2.5 inches/2280, etc.)
3. Pay attention to the heat dissipation design. High-performance NVMe may require a heat sink.
4. For important data, it is recommended to choose a model with DRAM cache.
It can be seen from the above structured data analysis that laptop hard drives are rapidly developing towards large-capacity NVMe SSDs in 2023. Consumers should find the best balance between speed, capacity, and reliability based on actual needs and budget.
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