- Mar 27, 2009
Most new HDs, they have their data density at 1TB per platter.
That, combined with their speed 5xxx or 7200 RPM makes them faster than raptors in almost all areas except seeking.
Yes, that is right. 1TB per 3.5" platter was the highest capacity till the WD Black 6TB was released (~September 2015) with 5 x 1.2TB 3.5" platters. Meanwhile the highest capacity 2.5" platter I have seen listed so far is 750GB.
Now regarding Raptors, 4th, 5th and 6th generation drives had 2.5" platter capacities of 150GB/160GB, 200GB, 250GB or 334GB according to the Hard drive platter data base:
First generation Raptors (released 2003) and second generation Raptors ( released 2004) had 36GB platters according this review. The third generation Raptor (released in 2006) according to the same review achieved a capacity of 150GB with two platters (suggesting platters of 80GB or slightly less).
So in summary:
1st and 2nd generation (2003/2004): 36GB platters, 8MB cache
3rd generation (2006): 75 or 80GB platters, 16MB cache
4th generation (2008): 150GB or 160GB platters, 16MB cache
5th generation (2010/2011): 200GB platters, 32MB cache
6th generation (2012): 250GB or 334 GB platters, 64MB Cache.