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Western Digital 1TB WD1003FZEX poor access time - Page 3

post #21 of 41
Quote:
Originally Posted by Techie007 View Post


    According to Passmark's online benchmarks, the Blue is indeed faster than the Black.  The EZEX scores at 1107 while the FZEX scores at 987.

Well this situation seemed a bit outrageous to me. I went to check out those PassMark scores, and you snagged the wrong drive for the FZEX. You wanted the WD1003FZEX.

So with the right drive selected, the new 1TB Black does score marginally better than the newest 1TB Blue. But not by very much.

The WD1003FZEX score is 1131. While the WD10EZEX scores 1107.

Average price $88 for the Black and $65 for the Blue. Giving the Blue a much higher Drive Value (that of course does not take into account the warranty differences).

Had I known these drives were so close in performance I might have saved myself $20 and gone Blue. So... is $20 worth an extra 3 years of warranty?
post #22 of 41
And presumably you now get some of their enterprise drive features in these new Blacks, like vibration control and corruption protection, whatever those are. No idea if that's just a gimmick or if that is actually meaningful.

If you go to Western Digital's web site, their marketing for the Black drives is A LOT fancier and showy than it is for the Blue. (Maybe that's where the extra $20 goes biggrinsmiley.gif )
post #23 of 41
Quote:
Originally Posted by Gleno View Post

Well this situation seemed a bit outrageous to me. I went to check out those PassMark scores, and you snagged the wrong drive for the FZEX. You wanted the WD1003FZEX.

    Thank you for the observation.  However, the only difference I see between those two entries is the presence of a space between "10" and "03" ("WDC WD1003FZEX" vs. "WDC WD10 03FZEX").  Looking even closer at the individual PassMark pages for those drives (here and here), the "sub-number" listed in "Other names" (-00MK2A0) is the same.  I honestly think that both entries are referring to the same drive.

    My question now is, "Why the space, and why the lower score on the drives with the space?"  A Google search for "WD10 03FZEX" didn't turn up anything relevant (as if the part number was invalid), while a search for the same number without the space between "10" and "03" brings a pile of results.  I wonder if WD had two different factories producing (or making parts for) this drive, or two "secret" revisions of the drive.  Just out of curiosity, could those reading this thread post what model number appears for their Black/FZEX drive in HwInfo?  For the Blue/EZEX, I'm getting "WDC WD10EZEX-00ZF5A0", and I've gotten peak sequential read speeds over 200 MB/s from it.
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post #24 of 41
Hmmm. Curious.

Anyhow, the version of my drive is listed as WD1003FZEX-00MK2A0.

My peak reads are just below 190 MB/s, so basically on par with what your Blue is getting.

I'm beginning to think that, at least for the 1TB single platter, that the Blue and Black are essentially the same, and you're paying a minimum $20 extra for 3 years added warranty.

Of course these are synthetic benchmarks, so who knows. There are presumably other advantages to the way the Black functions, dual 64 bit processors, special algorithms, etc, that might make real world performance and reliability better than the Blues. I don't know if WD claims whether the Blue drives have these features they are touting on their Black drives or not.

But based on the synthetic benchmarking the drives appear to perform identically.
post #25 of 41
Thread Starter 
Quote:
Originally Posted by Gleno View Post

Warning: Spoiler! (Click to show)
Hi. I am also seeing these much higher than typical (for WD Black drives) Access Times on my 1003FZEX. However, I do not know whether or not this is actually a problem. From what I can tell so far, the sequential as well as the random read/write results I'm seeing on CrystalDiskMark are quite good regardless of the Access Time being upwards of 16ms.

If I understand correctly, the Access Time is largely going to affect high numbers of small random reads and writes. But according to CrystalDiskMark, for HDDs the random read and write speeds of my WD1003FZEX are fairly good and at least on par with what the 12ms drives (like the WD4003FZEX) are providing.

Perhaps regardless of the higher Access Times the throughput for random read/write is just as good as the lower Access Time drives because the 1003 has a higher density single 1TB platter? And the bits are thus being read faster once the head gets to where it needs to read them? I'm guessing.

Here are my HD Tune results:



Also note the strange outlier access time points around 2% and 78% of the drive (at 28ms and 39ms respectively). Those points are always there and I don't know what that means. I have another forum post inquiring about it.

Now here are my CrystalDiskMark results.



And finally here is a CrystalDiskMark result I found on the internet for the 4TB version. The WD4003FZEX. Notice that my results for the 1003FZEX are on par with this drive.




So... are these values actually okay for my 16ms Access Time WD1003FZEX ? Why are my values essentially the same as for the 4TB version of the drive which uses 5 - 800GB platters, as opposed to my 1 - 1000GB platter.

Xutnubu, did you ever find out if these Access Times are normal for these drives, and we don't simply have defective ones? From what I've seen so far (though there is currently little information out there), all these 1003FZEX drives are in the 16ms range.

Kramy, you seem to be the guru around these parts, what are your thoughts on my benchmark results? Is this a pretty good drive after all, regardless of the seemingly high Access Time?

Thanks.

I asked their support several times, they sent me to the engineering department and I never got an answer.

My guess is that because this drive uses 1 platter you can't simply see the access time and say that it sucks, perhaps there's some dark magic going on that can't be shown in numbers that puts the drive in a "not too bad territory" despite the high access time figure.


But yeah, if you don't mind the warranty and couple of extra features, I think it's better to just go with the Blue.


BTW I asked the support agent if this drive has VCT (vibration control) StableTrac because if you go to the official website, under features, it is specified that only 2TB models and above have the feature, but the guy told me that the 1003FZEX has it as well. Then I asked him why that statement was contradictory to what you read on the official site, and he answered again that the 1TB FZEX has VCT StableTrac.

Their support is a joke.
Edited by xutnubu - 8/18/15 at 1:08pm
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post #26 of 41
Yes the 1TB do also have the VCT. You are thinking of StableTrac, which is only on the 2TB and above and is only really relevant to drives which have more than 1 platter, and require additional stabilization.

The VCT, high resolution controller (HRC), 64 bit dual processor, dynamic caching algorithms, (which are things I'm not sure if the Blue drives have) should presumably make these drives higher performing. If that is indeed the case, then I can only presume that it won't be evident in synthetic benchmark tests against their Blue drives, and will only be obvious in real world use applications, like gaming.

I don't know that the 16ms access times are a problem. The higher density platters apparently make up for these higher access times, because once it reaches the position it needs to read from it reads faster from a higher density platter. (So they read a small file in the same amount of total time as a lower Access Time drive). This may be why when comparing performance results between the 1TB drives (using a 1TB platter) and the higher TB drives with 12ms Access time (using 800GB platters) they are pretty much on par with each other, and they are all on the high end of drive performance from what I can tell. I'm no expert.

I would like someone who has more understanding of these things to chime in and reassure us 1TB Black drive purchasers that we got our money's worth by spending a fair amount more on the Black drive instead of the Blue, and that these high Access Times are nothing to be concerned about for this high density single platter drive.
post #27 of 41
Thread Starter 
Yeah sorry, I meant to say StableTrac.
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post #28 of 41
Quote:
Originally Posted by xutnubu View Post

Yeah sorry, I meant to say StableTrac.

Ah, in that case perhaps there was a misunderstanding by that engineer. The 1TB drives are not advertised to include the StableTrac technology which from what I understand is only needed to help improve the stability of multi-platter drives.

The Vibration Control Technology is advertised for all models of the Black drive, and adjusts for any vibrations being transferred to the drive from within the case. And presumably improves performance. Which I would think is more important for cases that have a lot of transferred vibration to the drive. I don't know. Touching my own drive rack inside my case, I can definitely feel vibrations, so maybe this technology is helping to mitigate that.
post #29 of 41
Quote:
Originally Posted by Gleno View Post

In fact, other than the higher Access Time, your throughput results in HD Tune are better than even the higher performing 2TB+ newest Black models.
The 4TB Blacks (WD4001FAEX) are fast, despite using a 5x800GB platter config. Not sure about the current 2TB Blacks - if they're 2x1TB, they might be the same as these new 1TB Blacks.

On Boxing Week I picked up a 4TB Black for $200, and I'm pretty happy with it.
WD4001FAEX Benchmarks (Click to show)
Read Benchmarks - Full Drive:
i59g.png
k2iq.png

Read Benchmarks - 1TB Short-stroke:
omam.png
5tdb.png

Write Benchmarks - Full Drive:
lmk8.png
61uz.png

Write Benchmarks - 1TB Short-stroke:
m77u.png
54cm.png

Quote:
Originally Posted by Gleno View Post

Although I am getting much better Burst Rates with the Pro version. Still not as good as I suspect they could be if I had a SATA3 interface.
Burst rates hardly matter. They might matter for FRAPS recording or something, but you should probably be using a larger drive for that, even if it's 5400RPM.
Quote:
Originally Posted by Gleno View Post

The VCT, high resolution controller (HRC), 64 bit dual processor, dynamic caching algorithms, (which are things I'm not sure if the Blue drives have) should presumably make these drives higher performing. If that is indeed the case, then I can only presume that it won't be evident in synthetic benchmark tests against their Blue drives, and will only be obvious in real world use applications, like gaming.

It might be visible in HDTune's random access test, but not the regular benchmark.
Quote:
Originally Posted by Gleno View Post

I don't know that the 16ms access times are a problem. The higher density platters apparently make up for these higher access times, because once it reaches the position it needs to read from it reads faster from a higher density platter. (So they read a small file in the same amount of total time as a lower Access Time drive).
Err... keep in mind that 150MB/sec is 150KB/ms, so assuming the 12ms drive averages 125MB/sec, it'll read 500KB before the 16ms drive even reaches the file. Then it'll take quite some time for the drive with faster sequential speeds to catch up.
Code:
12ms + 125MB/sec
16ms + 150MB/sec

@12ms: 0KB / 0KB
@13ms: 125KB / 0KB
@14ms: 250KB / 0KB
@15ms: 375KB / 0KB
@16ms: 500KB / 0KB
@17ms: 625KB / 150KB
@18ms: 750KB / 300KB
@19ms: 875KB / 450KB
@20ms: 1000KB / 600KB
@21ms: 1125KB / 750KB
@22ms: 1250KB / 900KB
@23ms: 1375KB / 1050KB
@24ms: 1500KB / 1200KB
@25ms: 1625KB / 1350KB
@26ms: 1750KB / 1500KB
@27ms: 1875KB / 1650KB
@28ms: 2000KB / 1800KB
@29ms: 2125KB / 1950KB
@30ms: 2250KB / 2100KB
@31ms: 2375KB / 2250KB
@32ms: 2500KB / 2400KB
@33ms: 2625KB / 2550KB
@34ms: 2750KB / 2700KB
@35ms: 2875KB / 2850KB
@36ms: 3000KB / 3000KB

The drives only equal out on files 3MB+ large...
Quote:
Originally Posted by Gleno View Post

I would like someone who has more understanding of these things to chime in and reassure us 1TB Black drive purchasers that we got our money's worth by spending a fair amount more on the Black drive instead of the Blue, and that these high Access Times are nothing to be concerned about for this high density single platter drive.
Well, that depends on how much you value the warranty I suppose.

And how the Black fares against a Blue in RandomAccess or real-world tests.
Edited by Kramy - 1/18/14 at 8:09pm
     
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post #30 of 41
Quote:
Originally Posted by Kramy View Post


Well, that depends on how much you value the warranty I suppose.

And how the Black fares against a Blue in RandomAccess or real-world tests.

Well a lengthy warranty is certainly nice to have. Not sure I would spend an extra $20 for it though.

Would WD really advertise and sell their Black drives as their High 'Performance' drives, even while the current basic Blues are performing just as well, if not better? In synthetic benchmark testing anyway.

Either they are being incredibly misleading, and the Black really only buys you an extended warranty (and probably a high priced one at that), or these Black drives DO in fact perform significantly better in real world applications.
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