GP/low-power drive wattages & specs for each manuf

Some of you may have seen me post about drive wattages, here's a bunch of info that I've just been compiling. Since I was looking I figured I'd copy it and make it available for everyone as it wasn't always easy to find every bit of info.

I've tried to list the series, speed, buffer, and warranty in the notes since those are other important factors. All are SATA versions - some lines had SAS or IDE - but I figured this was aimed mostly at WHS users. I've also included non-LP/GP and enterprise-class drives at the end of each manufacturer's listing under 'Select drives for comparison'.

Let me know if you find any errors. If this seems useful to everyone else I'll end up maintaining it.

Western Digital 3.5" drives
model          size  read/write  idle   notes
WD2002FYPS       2tb    6.8      3.7    WD RE4-GP, 5400rpm, 64mb, 5yr 1
WD20EARS         2tb    6.0      3.7    WD Green, 5400rpm, 64mb, 3yr
WD20EADS         2tb    6.0      3.7    WD Green, 5400rpm, 32mb, 3yr 1 2
WD20EVDS         2tb    5.9      4.9    WD AV-GP, 5400rpm, 32mb, 3yr
WD15EARS       1.5tb    6.0      3.7    WD Green, 5400rpm, 64mb, 3yr
WD15EADS       1.5tb    6.0      3.7    WD Green, 5400rpm, 32mb, 3yr
WD15EVDS       1.5tb    5.9      4.9    WD AV-GP, 5400rpm, 32mb, 3yr
WD10EARS         1tb    5.4      5.4    WD Green, 5400rpm, 64mb, 3yr 
WD10EADS         1tb    5.4      2.8    WD Green, 5400rpm, 32mb, 3yr 1 2
WD10EVDS         1tb    4.9      4.2    WD AV-GP, 5400rpm, 32mb, 3yr
WD10EACS         1tb    5.4      2.8    WD Green, 5400rpm, 16mb, 3yr 1
WD10EAVS         1tb    5.4      2.8    WD Green, 5400rpm, 8mb, 3yr
WD10EVVS         1tb    5.4      2.8    WD AV-GP, 5400rpm, 8mb, 3yr
WD1000FYPS       1tb    7.4      4.0    WD RE2-GP, 5400rpm, 16mb, 5yr 1
WD7500AADS     750gb    5.4      2.8    WD Green, 5400rpm, 32mb, 3yr
WD7500AVDS     750gb    4.9      4.2    WD AV-GP 5400rpm, 32mb, 3yr
WD7500AACS     750gb    5.4      2.8    WD Green, 5400rpm, 16mb, 3yr
WD7500AAVS     750gb    5.4      2.8    WD Green, 5400rpm, 8mb, 3yr
WD7500AVVS     750gb    4.9      4.2    WD AV-GP, 5400rpm, 8mb, 3yr
WD6400AACS     640gb    5.4      2.5    WD Green, 5400rpm, 16mb, 3yr
WD6400AAVS     640gb    5.4      2.5    WD Green, 5400rpm, 8mb, 3yr
WD5000AADS     500gb    5.4      2.5    WD Green, 5400rpm, 32mb, 3yr
WD5000AACS     500gb    5.4      2.5    WD Green, 5400rpm, 16mb, 3yr
WD5000AAVS     500gb    5.4      2.5    WD Green, 5400rpm, 8mb, 3yr

Western Digital 3.5" drives
Select drives for comparison:
model          size  read/write  idle   notes
WD2003FYYS       2tb   10.7      8.2    WD RE4, 7200rpm, 64mb, 5yr
WD2001FASS       2tb   10.7      8.2    WD Black, 7200rpm, 64mb, 5yr 1
WD1001FALS       1tb    8.4      7.8    WD Black, 7200rpm, 32mb, 5yr 1 2
WD6401AALS     640gb    8.3      7.7    WD Black, 7200rpm, 32mb, 5yr
WD7500AAKS     750gb   8.77      8.4    WD Blue, 7200rpm, 16mb, 3yr
WD6400AAKS     640gb    8.3      7.7    WD Blue, 7200rpm, 16mb, 3yr 1
WD3000GLFS     300gb   6.08     4.53    VelociRaptor, 10k rpm, 16mb, 5yr
WD1002FBYS       1tb    8.4      7.8    WD RE3, 7200rpm, 32mb, 5yr
WD7500AYYS     750gb   11.5      8.5    WD RE2, 7200rpm, 16mb, 5yr

Western Digital 2.5" drives
model           size  read/write  idle   notes
WD10TEVT      1tb    2.5     0.85    Scorpio Blue, 5200rpm, 8mb, 3yr, 12.5mm
WD7500KEVT  750gb    2.5     0.85    Scorpio Blue, 5200rpm, 8mb, 3yr, 12.5mm
WD6400BEVT  640gb    2.5     0.85    Scorpio Blue, 5400rpm, 8mb, 3yr, 9.5mm
WD5000BEVT  500gb    2.5     0.85    Scorpio Blue, 5400rpm, 8mb, 3yr, 9.5mm

Seagate
model           size  read/write  idle   notes
ST32000542AS     2tb    6.8      5.5    Barracuda LP, 5900rpm, 32mb, 3yr 1 2
ST31500541AS   1.5tb    6.8      5.5    Barracuda LP, 5900rpm, 32mb, 3yr
ST31000520AS     1tb    5.7      3.7    Barracuda LP, 5900rpm, 32mb, 3yr
ST3500412AS    500gb    5.0      3.4    Barracuda LP, 5900rpm, 16mb, 3yr

Select drives for comparison:
ST32000641AS     2tb   9.23     6.39    Barracuda XT 6Gb/s, 64mb, 5yr 1
ST31000528AS     1tb    9.4      5.0    Barracuda 7200.12, 32mb, 3yr 1
ST3750528AS    750gb    9.4      5.0    Barracuda 7200.12, 32mb, 3yr
ST35000418AS   500gb    8.0      5.0    Barracuda 7200.12, 16mb, 3yr
ST31500341AS   1.5tb    8.0      5.0    Barracuda 7200.11, 32mb, 5yr 1 2
ST31000340NS     1tb   11.6      8.0    ES.2, 7200rpm, 32mb, 5yr 1 1

Maxtor
model           size  read/write  idle   notes
STM31000528AS    1tb   6.57      5.4    DiamondMax 23, 7200rpm, 32mb, 3yr
STM3750528AS   750gb   6.57      5.4    DiamondMax 23, 7200rpm, 32mb, 3yr

Samsung
model           size  read/write  idle   notes
HD203WI          2tb    ...      ...    EcoGreen F3, 3yr
xxxxxxx        1.5tb    ...      ...    EcoGreen F3, 3yr
HD154UI        1.5tb    6.3      5.1    EcoGreen F2, 5400rpm, 32mb, 3yr 1
HD153UI        1.5tb    6.3      5.1    EcoGreen F2, 5400rpm, 16mb, 3yr
HD103SI          1tb    5.8      4.6    EcoGreen F2, 5400rpm, 32mb, 3yr 1
HD102SI          1tb    5.8      4.6    EcoGreen F2, 5400rpm, 16mb, 3yr
HA103UI          1tb    6.2      5.0    EcoGreen F1 CE, 5400rpm, 32mb, 3yr
HD502HI        500gb    5.1      3.9    EcoGreen F2, 5400rpm, 16mb, 3yr

Select drives for comparison:
HD502HJ        500gb    6.5      5.0    Spinpoint F3, 7200rpm, 16mb, 3yr
HD103UJ          1tb    8.4      6.7    Spinpoint F1, 7200rpm, 32mb, 3yr 1
HE103UJ          1tb    7.9      7.7    Spinpoint F1 RAID, 7200rpm, 32mb, 5yr 1

Note: Samsung OEM drives carry 30 day warranty.

Hitachi
model           size  read/write  idle   notes
HDS722020ALA330  2tb    ?.?      7.5    Deskstar 7K2000, 7200rpm, 32mb, 3yr
HDS721010CLA332  1tb    ?.?      4.4    Deskstar 7K1000.C, 7200rpm, 32mb, 3yr
HDE721010SLA330  1tb    ?.?      5.4    Deskstar E7K1000, 7200rpm, 32mb, 5yr

Select drives for comparison:
A7K1000          1tb   13.6      9.0    Ultrastar, 7200rpm, 32mb, 5yr 1

Hitachi had the most masked information hidden in white papers. Their drives use a "normal idle", "unload idle", and "low idle" which you can read about here. Unfortunately they don't seem to give read/write power specs anywhere. I've also noted the Deskstar drives as 7200rpm but it is unclear if and how much the drives spin down in their various modes.


Related articles on power consumption:

WD Advanced Format (EARS series)
Anandtech - The Cost of Running Your PC
XBit article

Nobody seemed to give you any props for this, but I found it quite helpful and will probably be referring to it in the future. Thanks for putting the time in.

WOW how did I miss this!
Thanks for this!
It will come in handy more than once.

Thanks for the all the hard work!

Thanks for the feedback.

For the "Select drives for comparison" I just chose a few more popular models since I didn't want to research all of hard drive history. But, going forward, as new GP/LP and non-GP/LP drives come out I'll add them.

If anyone finds a new drive to add please reply with a link and I'll update the first post.

BTW, on the WD site I have read once that the green drives each use a "Unique non-variable RPM optimized to the drive's characteristics"

EDIT: Also this line:
WD6401AALS 1tb 8.3 7.7 WD Black, 7200rpm, 32mb, 5yr

should probably be this:
WD6401AALS 640gb 8.3 7.7 WD Black, 7200rpm, 32mb, 5yr

Yeah, I read several sources on WD drive speeds as to whether they were fixed in speed or actually variable. If you see something definitive post a link.

Thanks for the 1tb catch, fixed.

very nice, this should be a sticky

thanks for this makes me wonder whether to buy the WD greens or the samsung

The 1TB has been mathematically show to be 5400RPM and I can't imagine why the rest would be any different.

We have to take a different approach when assessing the Caviar GP's seek time since WD does not explicitly give users the drive's spindle speed. The GP turns in a measured access time of 15.0 ms, a score that lags the 7200-RPM WD7500AAKS by a significant margin. The WD7500AAKS's measured seek time when accounting for 4.2 ms of 7200 RPM latency is 9.5 ms (missing the firm's claim by over half a millisecond). Assuming the GP also shares such a seek time, that leaves us with 15 ms [measured access time] minus 9.5 ms [assumed seek time] which equals 5.5 ms, almost exactly the rotational latency associated with a 5400 RPM spindle speed.

I've always thought of IntelliPower as a wiz-bang-magic-keyword from the marketing dept. that deludes people into thinking these drives actually change speeds.

As always, YMMV.

I just picked up 3 of the Samsung 1.5TB from the Egg for $99 a piece before %6 Bing CB. Fingers crossed that the Savage Baggage Handlers in the warehouse aren't to rough on them. I'm doing a Mini-ITX/Atom/WHS build with the Chenbro ES34069 case.

Thanks for pulling this info together, it explains why my Hitachi drives run 7C hotter than my samsung and WD EACS drives.

Thanks Old Hippie, even though it is based on some assumptions it seems somewhat conclusive so I changed the rpm for the Greens.

Great thread.

Frequency analysis also supports the notion that WD Green Power drives are 5400RPM. It's an older article, but GP drives probably haven't changed rotational speed since then - at least not that I'm aware of and certainly not up to 7200 RPM.

I have 4 of the 2tb models and the consumption looks correct. Great job on collecting the info

Wow! This thing must sound like a freakin' jet airplane!

"WD5000AACS 500gb 5.4 2.5 WD Green, 54000rpm, 16mb, 3yr"

thanx for the work [LYL]Homer, pretty useful info.

Originally Posted by axan

thanx for the work [LYL]Homer, pretty useful info.

I'll second that emotion! ( This is the spot where a great big thumbs-up would be placed if there was one)

Originally Posted by KevinG

Wow! This thing must sound like a freakin' jet airplane!

"WD5000AACS 500gb 5.4 2.5 WD Green, 54000rpm, 16mb, 3yr"

fixt

can we get this stickied?