I went with 16k, since I have both write and read speed issues with my TOPRAM 8GB SDHC card.
I need it to be fast reading for TomTom Navigator 6 as well as being fast for writing backups. Getting ready to test it out... Roger On Mar 16, 2007, at 12:13 PM, Jason wrote: > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > I chose 32KB clusters to attempt to improve write speeds since that's > the only complaint I have with SD cards in general. Overall I haven't > noticed too much of a difference. > > Roger Prokic wrote: > > > > > > So which cluster size would be best? > > I look at the data below and I think 16k is the best... > > But I think it means that you can actually store less information > the > > larger the cluster size as there will be space wasted more often > than > > not??? > > > > Roger > > > > On Mar 14, 2007, at 11:11 AM, Jason wrote: > > > > It's not the card that determines the default formatting but the OS > > that > > does it. I'm not sure what the Treo's default is, but XP uses 4k. I > > did this with a PC using the command-line format command that looks > > like: > > > >> format f: /a:32k > > > > I would imagine there's a Mac equivalent. > > > > You can get the 8GB cards from a number of places on-line. I keep an > > eye on dealuniversity.com, bensbargains.net and a couple of other > > bargain hunting sites and found the 8GB A-DATA card for about $40 > > after > > rebate from newegg.com. > > > > Roger Prokic wrote: > > > > > >> Jason, > >> Are all cards defaulted to a 4k size cluster? > >> How do you format a card with a different cluster size? > >> Do you do this from the palm or on a PC? > >> (I have a Mac) > > > >> Roger > > > >> On Mar 14, 2007, at 1:59 AM, Jason wrote: > > > > > >>> I have a 680 and an 8GB A-DATA "super" card and ran a couple of > > tests. > >>> The first column is with the default formatting and stuff still > > on the > >>> card (not really a fair test). Column 2 is 32k clusters, column 3 > >>> is 16k, > >>> column 4 is 8k, column 5 is 4k. The default if 4k so it looks like > >>> formatting the card helps clean out the crud: > > > >>> Default 32KB 16KB 8KB 4KB > >>> File Create: 69% 109% 484% 253% 227% > >>> File Delete: 69% 462% 128% 104% 181% > >>> File Write: 16% 22% 20% 18% 18% > >>> File Read: 682% 682% 692% 653% 644% > >>> File Seek: 1685% 1966% 1685% 1475% 1180% > >>> DB Export: 56% 70% 103% 64% 54% > >>> DB Import: 395% 416% 428% 412% 393% > >>> Record Access: 804% 905% 905% 861% 862% > >>> Resource Access: 914% 914% 800% 834% 768% > >>> VFSMark: 521 616 582 519 481 > > > >>> I also noticed that if I re-ran the test without reformatting the > >>> card the > >>> results would drop. For example, a re-run with 32KB clusters > gave a > >>> VFSMark of 573. > > > >>> For the hell of it I compared my 2GB, Ultra brand, 150x SD card > and > >>> came > >>> up with a VFSMark of 869, though most of that was due to screaming > >>> creates > >>> (1561%) and deletes (1387%). Writes were only 11% and everything > >>> else was > >>> on par with the 8GB card. > > > >>> On Tue, 13 Mar 2007, Roger Prokic wrote: > > > >>> > Here is my results... Can I get others that have a Treo 680 and > >>> an 8GB card > >>> > to post their results? > >>> > > >>> > VFSMark Results Treo 680 TOPRAM 8GB SDHC > >>> > > >>> > File Create: 38% > >>> > File Delete: 12% > >>> > File Write: 14% > >>> > File Read: 635% > >>> > File Seek: 1475% > >>> > DB Export: 8% > >>> > DB Import: 345% > >>> > Record Access: 841% > >>> > Resource Access: 783% > >>> > > >>> > VFSMark: 461 > >>> > > >>> > --- > > - -Jason > > - ----- > --- There are no absolute statements. I'm very probably wrong. --- > "The difference between genius and stupidity is that genius has its > limits." > - Albert Einstein > -----BEGIN PGP SIGNATURE----- > Version: GnuPG v1.4.6 (MingW32) > Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org > > iQCVAwUBRfrCNayvi1v8SpM5AQL2TgP/QHAOXRSIZIyl9pdYHXVySoCrh7NakQVv > F3LWzi2jDNYg7b3QpxTqtq95Alxl96vkw/BtPTkqxqD29v2mSrRjI0bVkWPaO3PI > 4Gg3a5ijdXLE32PSE/XDmD9Hugjdy4Q/zbVuCU5tZ4ToQi3braQfpEJKoxEtTOXC > BaRk2ChRL/8= > =0W4r > -----END PGP SIGNATURE----- > > [Non-text portions of this message have been removed]
