at the moment we seem to be in a bit of a golden era in terms of the availability of HDD with huge capacity and very good acoustics. people hailing the rise to power of SSD's may be a teensy bit premature....

Just FYI, the "Discuss this article" URL links to the Velociraptor thread.


And should I call my 640GB Blue too?

The 16.3ms random access speed measured in the review should be with AAM enabled, from the many screenshots I've seen. There's nothing "curiously high" about that.

I must confirm the above, my drive measured 12,2 ms average access time with AAM off (measured in HDTune actually, but differences with HDTach shouldn't be as high as 4ms whatsoever).

It may be that I'm getting too picky when it comes to PC acoustics these days, but if this drive is among the quietest (desktop) 7200 RPM drives, I may find myself considering a Green one next time... Yes, it is quieter than my old WD1600JS, which was way too loud when seeking, but I must confess I was a bit disappointed - the idle noise is quite audible and rather high-pitched, in my opinion, and vibration is noticeable, too. I hope to have the drive mounted in an Antec Solo by the end of the summer, this should bring some changes.

A little off-topic: I've had a single-platter 7200 RPM Hitachi Travelstar in my notebook for some 4 months now and it's a completely different world. If there are other people reading this who also find the quietest 3,5" beasts too loud, this is the way to go.

The Samsung T166 drives are quieter than both the WD 320/640 and the F1 drives.

Are you speking from experience? I'm asking because I was thinking of maybe switching from my T166 to an F1 for the added performance.

I recently purchased 2 6400AAKS and in HDtach i get pretty much the same results, but both of mine lists a different model number to yours. Any idea why this would be?


As for the new naming scheme it makes sense to me. Most people only look at capacity of drive and price to decide which one to buy. A simple colour scheme like this would help people be sure they are getting what they want.

I owned a 500GB T166 and it was a bit quieter than the WD 640GB. The SPCR reviews also show that (20-21dBA for T166 and 21-22dBA for the WD/F1)

I have a couple of T166s and an F1, and I can absolutely confirm that, at least where the F1 is concerned - in fact, I was a bit suprised that the F1 was rated so highly by the SPCR review. My F1's idle whoosh is quite noticeable in a quiet room, even from several meters away - it sounds a bit like water flowing in a pipe somewhere in the building, and there's a slight high-pitched hum element as well (only noticable at very close quarters though). In fact, both the T166s together are considerably quieter than the F1.

I don't know if SPCR got a particularly good one, or I got a bad one, but it does point towards them being inconsistent at the very least.

Double-check your access times, I think that has to be with AAM enabled or something. I can't provide any exact comparisons, but this is that drive with a 50GB OS partition:



And then a 200GB Programs and Files Partition:



This drive is extremely quiet; my 7200.10 seek noises now sound irritatingly loud compared to this. I've disabled all indexing and scheduled defragmenting on that drive because of this, lol. Only my fans are audible now.

~Ibrahim~

thanks alot for this.

i'll probably be going for the green in the near future- i like wds new black, blue, green terminology .

You're right -- that HDTach image was the wrong one, with AAM enabled. Without AAM, random access dropped to 12.4ms. The article has been updated with the new info.

Regarding the noise, it's possible our WD640 and Samsung FI samples are exceptional... but I doubt it. Maybe one or two, but all three?

Also, please don't take SPCR SPL measurements as absolute -- 20-21 vs 21-22 dBA could be no difference at all, perhaps it was very slightly noisier one day than the next. Our subjective comments are probably still more trustworthy than anything else in the review (when it comes to noise).

When the anechoic chamber is done and all the test gear is fully calibrated and tested against known NIST1 references, then we may be able to claim 1 dBA accuracy... but definitely not today.

Don't rely very much on some noticeable performance gains if you change your drive. In the contrary, if you aren't doing something that relies exclusively on hard drive performance, chances are that you aren't going to notice any improvement at all. Even if you're into that kind of activities, think about a very important factor - access times. You simply can't expect miracles there, and it's access times what really counts for most applications (well, at least for me), and not the linear transfer rate. Firmwares also do get improved, but then again, you'll need a very specific load to notice that certain algorithm has changed.

So my advice is: if you've got a nice quite drive, keep it. If my antique 80 GB WD drive did had FDB onboard, I would have never swapped it for anything else

very nice, thanks for the review!

I was going to go for a single platter WD3200AAKS but here in Oz few sites will tell you whether they're selling a single or double platter drive and then the review added extra uncertainty. I've now narrowed my choice down to the WD6400 or the Samsung 640GB drive - both have similar performance, both are similar money (AU$100 compared with AU$70-80 for the 320GB models), but I don't know how they compare noise and powerwise.

Any chance that there's a review of the Samsung on the way or should I extrapolate from the F1 1TB review and go with that?

I used to believe that, and I remember saying so on this forum a while ago, and getting slapped down for it - apparently access time isn't one of the most important metrics when considering overall performance, at least for desktop/workstation use.

http://forums.storagereview.net/index.p ... opic=21104

Other than that, I do agree with you, up to a point... I think an old 80GB drive might produce a performance bottleneck in a modern PC running Vista, but the difference between, say, a 500GB Samsung T166 and a 640GB WD SE16 would be marginal at best for normal usage.

The T166 is still an excellent drive - acoustically it's unbeaten in my experience, and it can still just about hold its own performance-wise against the latest high-density models. I'm kicking myself now for not snapping a few more of them up a couple of months ago, before most online dealers pulled them in favour of the newer lines.

Extrapolate, pls.

Mike, the new text needs some editing:



A few too many verbs there.


PCMark tests between the WD6400AAKS and 640GB F1 have shown the WD faster.

okay

Going by the WD3200 and 6400 reviews it looks like each platter uses ~2.2W at idle and ~3W load, which equates to 1/3 energy use of a 2 platter drive and 1/2 the use of a 1 platter drive.

Therefore I guestimate that for a 3 platter drive (F1 1TB) each platter would use 1/4 of the power use (~1.6W idle/ ~2.5W load) which would give a power draw of 5.4W idle/ 7.4W load (bit less with AAM perhaps) for the F1 640GB, compared with 6.8W/ 9.3W for the WD6400. Which is pretty decent for a 3.5in 7200rpm drive. Hmm.



thanks QuietOC, the difference in scores is quite remarkable. Any idea how much of a difference they'd make in real life?

I just purchased two of these drives to replace the old two-platter WD3200AAKS that I had in this system. All I can say is wowza. Screaming performance across the board, quiter than my old drives, and more storage space to boot!



That's the HDTach screenshot of the two drives in RAID0. It's nearly a linear increase in transfer rates over the single drive, while access times are understandably the same. They're not quite silent in my system, since they're hard mounted, and the Antec 900 doesn't lend itself to silence, but they're definitely quiet enough for all but the most extreme of silencing enthusiasts.

Even in RAID 0 how did you get such a rediculous burst speed? Is that just a blip or do you always get that fast?

It would depend on your type of real. Most of the time I can't tell much difference between my fairly slow 18ms 250GB/platter P7K500 and the 12ms 320GB/platter WD6400AAKS. Of course I have 8GB of DDR2 too which probably helps out.

That massive increase in the burst speed happens when you enable write-back cache on RAID arrays in the Intel Matrix Storage Console. I'm not entirely sure, but I'm guessing the RAID controller has it's own memory cache, which is being accessed without ever travelling over the SATA cables.
It also depends on what you do with the drives. If you're mainly a web-based user, then faster hard drives obviously won't make a difference, but if you deal with large programs and/or files, then you should notice a healthy boost in speed from the hitachi to the WD drive. I noticed a difference in overall system performance moving from my old drives to the new ones (yes... I'm picky and I hate waiting ).

thanks guys, looks like its 6 of one and 1/2 dozen of the other. I'll just see what's in stock when I get my other stuff - doesn't look like I'll go wrong with either!

Does anyone know of a tool to disable acoustic management?

I've received this WD drive with acoustic management enabled, so my seek times are around 16ms. I won't mind some more seek noise

- Nick

Hitachi's tool seems to be a favorite to adjust AAM on most drives.

WinAAM
http://www.withopf.com/tools/aam/
http://www.withopf.com/tools/aam/winaam-29.zip

Thanks guys! I've used Hitachi Tool (DOS) to disable it.

But, it didn't make much difference, access time dropped from 16.3 to 15.4, I'm still far away from what reviewed model shows

Are there many different versions of this drive, some of them with slower access time (and probably quieter)? I can barely hear seeks, as very faint, coming from my Antec Sonata case.

- Nick

Some have reported that for their drives, in order to achieve 12.Xms access time, AAM has to be enabled but set to the "fastest" value (254? can't remember).

HTH.

Yes, that works! Thanks!

Now, I'm getting what I paid for 12.4ms seek and 101.6MB/s avg. read in HDTach.

- Nick