Question about desktop HD platter sizes

[TeamworkGuy2]

Does anyone know what or where I can find platter sizes for different models of 3.5", 7200 RPM desktop hard drives?
I have tried a few Google searches, but I have not found anything conclusive,
especially for specific models of Western Digital and Seagate hard drives.
Thank You

 

[EDO219]

Are you concerned the HDDs will be too thick to fit into the bays?

 

[SNGX1275]

Depends on the total drive size, are you looking at just modern drives?

A 2TB drive will have maybe 4 500Gb platters or 3 667Gb platters (Samsung).

Seagate's 3TB external has 5 600Gb platters.

 

[TeamworkGuy2]

Thanks for the info SNGX1275, and yes, I am just looking at modern HDs.
I was particularly wondering about this drive:
WD Caviar Black 640GB - WD6402AAEX, and other Caviar Black drives.

PYGMUS, I am not concerned about the HD fiting in the bay, as I believe all desktop 3.5" hard drives are the same thickness.
Once you go to 2.5" hard drives the thickness changes.

 

[SNGX1275]

My guess is that has 2 320GB platters. I'll see if I can find out for you.

Edit: Yep, looks like 320GB platters. Source: http://techreport.com/articles.x/14380

 

[EDO219]

Oh, you were referring to disk storage capacity and not the physical thickness of the platters. xD

 

[TeamworkGuy2]

Oh, you were referring to disk storage capacity and not the physical thickness of the platters. xD

Yes, exactly.

Thanks again, SNGX1275.
I checked your link and found the spot where it said it had 2 x 320 GB platters.
That website might come in handy for checking other hard drives too.
(I am going to look at some benchmarks and see at what point the number of platters affects performance)