WD Black vs. Green

[SeanFL]

I'm putting the Intel G2 SSD as my main system drive, then have a WD Caviar Black 1TB for my big audio/video files. For a backup, I bought a WD Caviar Green 1TB.


When using HD Tune, I'm getting fairly similar scores between the Black & Green. Should I? These benchmarks were done in an external esata dock.

WD Black: Average: 85.3, burst 90.3, 12.3 ms access.

WD Green: Average: 85, burst 91. 14.7 ms access.

Really the access time is the only significant improvement with the black.

are the wd green's that good?


Sean

 

[hclarkjr]

maybe the esata is holding things back? i have a 750 black and get way better numbers than that

 

[SeanFL]

that's probably it, since my internal older seagate 320 gig got better burst speeds (but not higher average).

What speeds should I expect with HD Tune inside the machine?


Sean

 

[hclarkjr]

HD Tune Pro: WDC WD7501AALS-00J7B0 Benchmark

Read transfer rate
Transfer Rate Minimum : 55.6 MB/sec
Transfer Rate Maximum : 114.7 MB/sec
Transfer Rate Average : 89.6 MB/sec
Access Time : 13.4 ms
Burst Rate : 133.8 MB/sec
CPU Usage : 2.2%
that is using HD TUNE PRO 3.50

 

[hclarkjr]

the drive is about half full with files and such i should mention also which affects benchmarking too

 

[elconejito]

i have the Black mounted internally and with HD Tach (similar prog) I get ~120mb/s max, ~60mb/s min, 97 mb/s avg, and random access of 11.9ms. Burst was ~234mb/s but I get the same on a 640GB Blue so I think that's limited by the interface, not the hard drive itself.

So I think eSATA is probably holding you back a little bit, but also the Green really is that good....

 

[Syntax Error]

If your drive can limit eSATA, I want to know what drive you're using.

In other words, it's not an eSATA bottlenecking issue. In terms of sequential read performance, there really isn't a huge difference between the WD Caviar Black series versus the Caviar Greens, the only real difference is in access times due to the Caviar Black's 7,200 RPM rotational speed.

 

[SeanFL]

fyi, I'm using the sata drives inside a thermaltake blacx external esata dock. This weekend I'll build the new box and toss the black in and see what it runs at. Maybe the dock isn't capable of full sata speeds?

Also, thank you for the info between the two drives. Sean

 

[n7]

You're almost certainly being held back by the dock.

I use an eSATA dock, & while real world file copy isn't affected much, benchmarks are crippled by it.