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Why is my 5400 rpm drive faster than my 7200 rpm?

2,904 236 January 18, 2018 at 05:16 PM
I have a Toshiba 7200 rpm 4TB hard drive, model number MD04ACA400. I was trying to decide if I should keep another of the 8TB WD Red's from BB or if I should return it since I dont really need more space right now. For fun I did some benchmarks using Crystal Disk and HD Tune and both of them show the 5400 rpm WD Red as being faster than the 7200 rpm Toshiba. Why is this? More cache on the Red?

The Toshiba is my install/work drive but I have my OS and large apps/games on my SSD. So lots of smaller, less used stuff gets installed on this drive and a bunch of steam games that I dont play much. Would the WD Red be better for this since it seems to be faster, even though its 5400 rpm?

Some tests here that confirm what I've found: http://hdd.userbenchmark.com/Tosh...ating/3202
http://hdd.userbenchmark.com/Spee...AX-68LHPN0

My tests:

HD Tune: WDC WD80EFAX-68LHPN0 Benchmark

Transfer Rate Minimum : 156.2 MB/sec
Transfer Rate Maximum : 202.9 MB/sec
Transfer Rate Average : 179.6 MB/sec
Access Time : 8.4 ms
Burst Rate : 177.7 MB/sec
CPU Usage : 16.1%


HD Tune: TOSHIBA MD04ACA400 Benchmark

Transfer Rate Minimum : 136.0 MB/sec
Transfer Rate Maximum : 197.0 MB/sec
Transfer Rate Average : 168.4 MB/sec
Access Time : 8.6 ms
Burst Rate : 190.4 MB/sec
CPU Usage : 18.3%


Toshiba 7200:

Sequential Read (Q= 32,T= 1) : 146.084 MB/s
Sequential Write (Q= 32,T= 1) : 126.760 MB/s
Random Read 4KiB (Q= 8,T= 8) : 1.086 MB/s [ 265.1 IOPS]
Random Write 4KiB (Q= 8,T= 8) : 1.349 MB/s [ 329.3 IOPS]
Random Read 4KiB (Q= 32,T= 1) : 1.132 MB/s [ 276.4 IOPS]
Random Write 4KiB (Q= 32,T= 1) : 1.239 MB/s [ 302.5 IOPS]
Random Read 4KiB (Q= 1,T= 1) : 0.488 MB/s [ 119.1 IOPS]
Random Write 4KiB (Q= 1,T= 1) : 1.329 MB/s [ 324.5 IOPS]


WD Red 5400:

Sequential Read (Q= 32,T= 1) : 154.210 MB/s
Sequential Write (Q= 32,T= 1) : 147.329 MB/s
Random Read 4KiB (Q= 8,T= 8) : 1.224 MB/s [ 298.8 IOPS]
Random Write 4KiB (Q= 8,T= 8) : 2.921 MB/s [ 713.1 IOPS]
Random Read 4KiB (Q= 32,T= 1) : 1.248 MB/s [ 304.7 IOPS]
Random Write 4KiB (Q= 32,T= 1) : 2.864 MB/s [ 699.2 IOPS]
Random Read 4KiB (Q= 1,T= 1) : 0.454 MB/s [ 110.8 IOPS]
Random Write 4KiB (Q= 1,T= 1) : 2.619 MB/s [ 639.4 IOPS]

4 Comments

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#2
Higher areal density + more cache + brand new = faster
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#3
It sounds like your drive has problem. I highly recommend SpinRite.
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#4
Same with mine. The Red (actually a White) betters my 7200 Black. Benchmarks as I recall were a little higher for both than yours but on a relative basis about the same level of difference. I was kind of surprised too.
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#5
I'd switch the SATA connections and test again because sometimes each port gives different speeds, and it's not the hardware but something about the BIOS and Windows.

I get 200MB/s from 7200 RPM drives made in the past 5+ years.
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