I thought some people might be interested in these new drives. I picked one up earlier today and threw HDTune at it. It's a fair improvement over my older ST3320620AS even just in general usage. Graphs below: Test system: Gigabyte P35-DS3P rev 1.1 L739B639 Q6600 stock 4 x 1024MB Hynix FP-S5 based DDR2-800 5-5-5-18 Pioneer DVR-215 SATA DVD-RW on ICH9R primary channel 80GB Seagate ST380815AS on ICH9R (3.AAC Firmware) 320GB Seagate ST3320620AS on ICH9R (3.AAD Firmware) 500GB Seagate ST3500320AS on ICH9R (FD15 Firmware) Write caching enabled on all drives Running Vista Ultimate x64, fresh and updated (w/o SP1 RC1) ST3500320AS (7200.11 with 32MB Cache) ST3320620AS (7200.10 with 16MB Cache) Does anyone have the older 16MB cache version for comparison? There's been a bit of a price drop on these recently, although they still are in the more expensive class of 500GB drives. I noticed that the usual 320GB drives are much harder to find now. I tried 3 diffferent vendors and none had stock. Apparently these new 7200.11's are just as popular talking to some stockists.