Rating: 
Summary: reliablility and affordability, all in one!
Review: I have had an awesome time with my new Zire 72 and it's MP3 features! This card holds more songs than I can possibly listen to and the removal and addition of new songs is easy as pie! The Viking cards are fast enough for me!
Rating:
Summary: very satisfied
Review: ...Have been using it for over 2-weeks now and moved large files from compact flash card to sd card with no-problems. ...
Rating: 
Summary: S ... L ... O ... W ... !
Review: As others have mentioned, this ... card ... is ... slow! I had two 128MB cards (Lexar and SanDisk) before, and both read/wrote much faster with my Palm Tungsten|T than this card. A backup operation, for example, which took about 2 minutes to write to my old 128MB card took about 5 minutes with this card. The total size of files being backed up is about 13MB. Someone mentioned 5 - 10 seconds to write a 5MB file in another review; I have seen nothing CLOSE to that speed.
I don't know if there are faster 256MB cards, but it may be worth checking out before buying this card.
Rating:
Summary: What's not to like about this SD card?
Review: Fantastic results in my Minolta Dimage G500! Speed, reliability, and the right price. Nary a problem from day one.
Rating: 
Summary: Slow write speed but good read speed.
Review: Got it after reading somewhere that it is compatible with my minolta F300 but the performance in writing really [is bad]. I got to give that guy grief for saying otherwise. Anyway, it is not a bad product but the price is too good to pass. I will keep it as a backup card because of poor write performance. ... I would not recommend this card if you are looking for fast write speed. The support, as you know, responded that they are looking in my question but I doubt I will get any satisfactory answer from them. So, I would rate them poor in my opinion because it is already a week since I contacted them.
Rating:
Summary: Three months, no problem, great pictures stored!!!
Review: Hi, I have purchased this Viking SD card for more than three months now. It works fine with my mp3 player as well as my Kodak DX6440 camera.
No complaint for the excellent price at Amazon (...).
Rating: highly recommended.
Rating:
Summary: Good price but slooowww
Review: I bought it to supplement my PDA memory. I use it to install PDA applications instead of main memory; that works fine as the read times on this card are OK.But when I decided to use this card to store some large photos (~1.7MB to 2.5MB each) by copying them over from the PDA's compactflash card over to the SD card (my PDA has both types of slots), the write times for me were extrememly slooowww. By rough counting (1-one thousand, 2-one thousand, 3-one thousand, etc.), I came up with about 50 secs to copy 1.7MB. The pictures were taken using a 4 megapixel compactflash digital camera at highest compression quality (not a highly unusual setting). I can imagine this card plugged into an SD digi-cam and having to wait that long in between shots while the camera saves to this card! I must agree with other reviews here that this card is OK at reading but writing is real slooowwww. My opinion is that if you want something at this price, this card is OK. But if you need better performance, I think you should look elsewhere. Unfortunately, I can't return this card as I cut the UPC to qualify for the rebate immediately after opening the box. My opinion is that you might want to try this card out extensively before applying for the rebate.
Rating: 
Summary: Not the fastest, but works reliably and well
Review: I bought the Viking SD256 in November of 2003. It works perfectly with my Palm m500 and has been reliable all that time. (Speaking of the Palm, I have found that a utility such as Handmark's SuperUtility is very useful for manipulating files and folders on the external memory card, and copying items back and forth. The Palm's supplied software is, I think, a bit lacking in these functions.)
I bought my memory card to store eTexts to have with me as a portable reading library for my Palm. I currently have the complete works of Dickens, Poe, and Shakespeare, the complete poems of Dickinson, plus some Jane Austen, Arthur Conan Doyle, Jules Verne, Lewis Carroll, Robert Louis Stevenson... etc. etc., and I still have plenty of room for more!
For reading eText files, the speed of this card is perfectly fine. Sometimes if I am loading a particularly large file -- such as David Copperfield or the King James Bible -- which was last left scrolled a good way through the document, it takes 5-10 seconds for Teal Doc to load the document and find the right location, but this is tolerable. Once the file is loaded, single-paging through while reading is not noticeably slower than with docs in the Palm's memory.
If I were doing it over again, I would probably get an Ultra II or other "fast" SD card just so the files would open a bit faster, but for my purposes I am quite satisfied with this Viking. You, dear reader, might wish to spend more for a faster SD card if you are going to be frequently transferring files to and from the card, or if you need more speed for your device (i.e. if your camera will have to wait longer between exposures if it is held up by a slower memory card, etc.)
Rating:
Summary: Good card ... but slow !!
Review: I bought this card for my dell pocket PC. This card along with its mailing rebate (which I got within a resonable time) was the best deal out there. There does not seem to be any realiability problems with this card but it is really really slow. It takes ages for me to transfer mp3 files to this card from my PC. Its so slow that I have stopped transferring files!
So I would suggest that this card not be used with any device which benefits from fast data transfers.
Rating:
Summary: Sandisk Card in disguise
Review: I bought this card for my wife's palm Zire 71 and my plam tungsten C thinking Viking made it since my first 64MB Viking card has never had a problem. It turns out Sandisk makes their 256MB cards. I have corrupted 3 Sandisk 256MB in 2 wks. I did this by writing with the sandisk card reader and the viking card reader. 1 of the three cards can no longer be formatted to recover it. I went to the Sandisk site for help on what I was doing wrong and they have a list of things that can cause corruption to these cards. One cause can be writing any file too quickly to the card. Sandisk's solution is to reformat the card and start over. What good is using these cards if you can't trust the integrity.
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