I recently tested two nearly identical drives on my Pismo's internal drive bus (400mhz/640mb ram/9.1.), a 4200 rpm 30GB (DJSA-230) and a 5400 rpm 32GB (DJSA-232) Travelstars using ATTO's ExpressPro-Tools' 'Benchmark Drive' utility. Both are 66.6 Ultra-DMA mode 4 mechanisms and both have 2MB of cache.
30GT DJSA-230 series - 4200 rpm <http://www.hgst.com/hdd/travel/tr30gt.htm> 32GH DJSA-232 series - 5400 rpm <http://www.hgst.com/hdd/travel/tr32gh.htm> 30GT 32GH --------------------------- sustained transfers - MB/s read write read write ----------------------------- 10.7 10.4 16.4 16.2 peak transfers - MB/s read write read write ----------------------------- 60.7 55.5 55 45 The above TStars are already at least two generations old, I reckon the latest 4200 and 5400 rpm drives to be a bit faster. I haven't any 7200 rpm laptop drives so I can't comment on their speed. The Pismo's internal ATA bus can handle an actual throughput of greater than 60mb/s, suggesting a 7200 rpm drive would provide considerably greater speed than either of my test examples. Heat output can usually be deduced by checking the prospective drive's power consumption specs. Generally, energy in = heat out. Comparing one's current 4200 or 5400 rpm drive's specs with those of the 7200 rpm drive should give at least some idea of how hot the faster drive will get. hth, Dan K ................................. http://macdan.n3.net/ carracho://dankephoto.dhs.org:9700 hotline://dankephoto.dhs.org:9500 ................................. -- G-Books is sponsored by <http://lowendmac.com/> and... Small Dog Electronics http://www.smalldog.com | Refurbished Drives | -- Check our web site for refurbished PowerBooks | & CDRWs on Sale! | Support Low End Mac <http://lowendmac.com/lists/support.html> G-Books list info: <http://lowendmac.com/lists/g-books.html> --> AOL users, remove "mailto:"; Send list messages to: <mailto:[EMAIL PROTECTED]> To unsubscribe, email: <mailto:[EMAIL PROTECTED]> For digest mode, email: <mailto:[EMAIL PROTECTED]> Subscription questions: <mailto:[EMAIL PROTECTED]> Archive: <http://www.mail-archive.com/g-books%40mail.maclaunch.com/> --------------------------------------------------------------- >The Think Different Store http://www.ThinkDifferentStore.com ---------------------------------------------------------------
