SanDisk SDSDH-1024-901 1 GB Ultra II Secure Digital Memory Card (Retail Package)

As a response to "mom2sarah..." who recommends 2 cards of 512 MB rather than this 1 GB, I have some things to point out
1. It is true that write (and read) a large number of small files to (and from) a 1 GB card is a little bit slower than a 512 MB. However, this card is mostly used in digital camera and today moderate cameras have image resolution of at least 4 megapixels which means around 1 MB per file. And 1 MB is big enough to reduce the difference of transfer speed. For those who use relatively new camera, this difference is hardly noticeable.
2. Occasionally you would want to record some video from your digital camera and of course you don't want your movie to be interupted because of memory limited. In my Canon S2 IS, a super fine video of 620x480, 30fps uses the whole 1GB card just for about 8 minutes. So, using 512MB is even worse.
3. Around the internet, this card is said to be pretty durable, there is no major corruption issue with it. Hence, there is no risk to buy.
4. I have used a lot of SD cards before and this is the fastest among those. I was impressed. The first time I bought this card, I took around 300 pictures (around 400 MB), when I transferred them to my computer, I suspected it would take at least 3 minutes like my other SD cards. But no, it took only a minute flat.
5. In my Canon S2 IS, the actually usable memory is 968MB. The fact is ALL memory storage devices always have a little bit less storage space than indicated by the manufacturer.

I tried to find some cons about this card because they will make the review to be fair. But I must say that I can't find anything to complain about this card.

I have over a dozen SanDisk CF/SD cards of varying sizes. They are the most reliable SD cards I have used.

Recently I bought 2 1GB SanDisk cards from "1OnlyNewStuff" in the Amazon marketplace. When I got them I tried them out immediately and they read/wrote OK.

However, when putting one back in the camera something just did not look quite right about it. Comparing my two new "SanDisk" cards to any of my old ones showed that the new cards had no serial numbers, had slightly different physical profiles, and sort of blotchy printing.

Checking on the internet I found that SanDisk counterfeits have long been known on E-Bay. Now they have been brought to Amazon. There is a page at [...] which shows some of the characteristics of the fake cards.

I checked with SanDisk, provided them with photos of the two new disks and SanDisk confirms them as fakes.

The SanDisk pictured on this Amazon Page is real (note the notch on the bottom of the media - lacking on most fakes). Likely media ordered directly from Amazon is going to be OK.

However if you are tempted, as was I, by the lower price from some Amazon merchants when you get the cards inspect them to see if they are real or counterfeit.

SanDisk very promptly will help you with this. For example, if the media has a serial number SanDisk can confirm if it is valid. If it has NO SERIAL NUMBER, then don't bother SanDisk - because ALL actual SanDisks have serial numbers (and a lifetime guarantee)

This is in response to the first reviewer's valid observation/comment, notably that "This card seems to have a good transfer rate when copying a small number of large files. However, it still crawls when compared to my panasonic 256MB SD card that is much older when copying a large number of small files." The reason for this is that the bigger the card, the longer the recycling time between shots or uploading or downloading files. The best explanation I heard is that info processing in memory cards is similar to it running around a track - the bigger the card, the longer it takes to get around the track. That's why I ALWYAS recommend people who insist on having 1 Gig memory to buy TWO separate 512 MB cards! Also, in the slim chance your card gets corrupted, you won't lose ALL of your precious photos. Btw, I have owned the ULTRA II versions of their Compact Flash Card, Secure Digital Card, and Memory Stick and have never had any problems. But it's always advisable to be "safe than sorry". Finally, unless it's an older camera, your camera will most likely benefit from the increased speed these cards allow. Therefore, I wholeheartedly believe they are worth the extra cost. I do NOT recommend the regular Sandisk cards however - they are Overpriced and SLOW.

I bought this card for my Canon S2 and it works so great that I bought another one not long after. The speed is excellent. I can actually scroll through photos on my camera with no delays and downloading to my pc is pretty fast.

The card holds over 400 photos including a 10 minute video clip, all at the highest quality. I am very pleased with this card.

Not sure why SanDisk hides the speed rating of this card on the back of the package in small print, but this card has a 60X write speed (9MB/second), and 66X read speed (10MB/second).

The increase in write speed while taking pictures was noticeable with a Canon PowerShot SD400 (a 5 megapixel camera with image sizes of about 3MB set at highest quality).

This large card can hold over 300 pictures for my PowerShot.

So no problems with the card, but it's only a few days old.

I bought this card for my new Canon Powershot S2. I used it on our month-long vacation and had no problems with it whatsoever, and in fact was very pleased with the speed in which it seems to process. I haven't had any problems with data corruption (as other reviewers have mentioned), but then again I haven't had the card incredibly long. Still, I consider 30 days of extensive (and constant) use under varying conditions to be a good test, and I have to say that I'm pleased with the card.

Just a disclaimer, I've only had it for a month so far.

Simply put, it gets the job done and done well. Holds a ton of pictures (on a variety of settings). What more can I ask for?

Had seen this chip at Best Buy for $90.00 and at Staples for $119.00, great deal on Amazon! Sandisk cannot be beat for quality also!

No need to format it, you just pop it into your camera and it's ready to go. Well, for the Canon SD400, that is. I've talked to some of my computer geek friends about the 1G vs. 2 512mb business and they've told me that it's a ridiculous argument, it's really your preference but 1G is probably preferable. You have more space in one sitting if you will, and can take plenty of pics without having to worry about fumbling with another tiny card in the middle of a photo op. They also told me that the Ultra II was ideal for my camera.

I even had some problems with UPS re-routing my package (since it had to be signed for and I wasn't home to do that), they seemed to be holding it hostage on the other side of the city and after 4 consecutive days of being promised it was in the system and would arrive to me, I had no luck (or patience). I still don't know where it is! Amazon was quick to resolve the problem and send me another card directly to my business address. 5 stars for the card and amazon, -5 for UPS's (lack of) service.

My speed tests show that this is not 60X (9MB/s) but more like 40X (6MB/s). However, it is plenty fast for my new digital camera.