SATA's cost per GB fell another $0.05 this month on average; to as low as $0.43 per GB in the 250GB sector. 7200RPM PATA drives were generally about $0.42 per GB, which gives SATA narrowest margin cost per GB yet. Maxtor continues to lead the pack with its 200GB DiamondMax 10 [RTPE: 6B200M0], although there are slightly cheaper drives in the 250GB range as well. Hard drive pricing is probably one of the most predictable models as this point - particularly if the one year plot of the 6B200M0 is any measure:
If you're interested in seeing the exact cost per GB (accurate to the minute), check RTPE here. Another drive that has lead the drop in cost per GB on our SATA drives is the Seagate SATA 250GB 7200.8 [RTPE: ST3250823AS] The 7200.8 isn't the cheapest 250GB drive right now, but if you click on the RTPE link and scroll down, you'll see the cost per GB is still very competitive. We have been watching this drive very closely, and again this drive takes our pick as the SATA II all around drive.
For whatever reason Western Digital always gets their own little mention for the grossly expensive, exceedingly forward thinking Raptor series [RTPE: WD Raptor]; a feat that no manufacturer has really duplicated yet. The price on these Raptor drives has remained nearly a constant $180 for almost two years, but for the first time last month we noticed a $20 rebate at some vendors bringing the price down to about $165. At this price you are still better off sticking with the Raptor over, say, a SCSI alternative since you won't need to buy a separate SCSI controller - but the gap does continue to narrow!