HP's 8GB SDHC card appears to be one of the better buys at the time of this review, as far as price/performance/capacity is concerned. In my case, it fulfills the task assigned - store a large number of photos for an electronic picture frame to display. However, its relatively low write speed may NOT make it suitable if the intended use was in a camera taking large 'rapid fire' shots.
PERFORMANCE
I would like to note that I did not test the card with a camera but it's stated 'Class 4' speed class, which is the equivalent of a 26x speed rating should guarantee a MINIMUM of 4MB/s.
Unlike the 'x' ratings, the speed class ratings are NOT certified by an independent body so, more or less, you will have to decide whether you trust the card's maker. It so happens that I DID test the card myself and I found that I could copy 1.6 GB worth of photos in about 5 minutes. This is 5MB/s for writing on the card for the first time, indicating that the Class 4/26x claim is honest.
Practically, if you are going to use this card in a camera, depending on the quality of the pics you are taking, you may or may not be happy with its performance. At 12 megapixels, a 100% quality JPG would produce a 2-3 MB file so, without even counting the overhead, your camera will spend about half second, possibly more to write to the card which may or may not be in line with your own expectation. For better performance, look for a higher 'class' number 133x/Class 20, for example, should support 20 MB/s or writing up to 10 12-megapixel JPG photo files per second.
ADDITIONAL FEATURES/CONCERNS
The card comes formatted as FAT32 and my Vista Enterprise computer was able to write to it. If, for whatever reason, FAT32 is not what you need, you should be able to format it under Windows/Vista, Mac or Unix/Linux to whatever you may need.
Not ALL cameras support FAT32. Older cameras may only be aware of FAT16 and can't see any card larger that 4GB. If in doubt, check with the manufacturer or maybe read your camera's reviews at Amazon.
Related to the above - anyone who may have a device meant to use SD cards should be aware that SDHC may not work with it so it's better to ask the maker.
Finally, one nice thing about HP's card - it comes with a write-protect tab. If you are not using your card in a camera and want to prevent accidental writes, move the tab to the 'lock' position but, be careful, it will NOT work with your camera if you forget to move the tab back to 'unlock'.
RATING
This is a honestly rated Class 4 card. Class 4, as I explained, means SLOW so, if blazing-fast write speed is not an issue, this is probably what you need given the price and the maker's reputation - by the way, the card is manufactured in Japan.
For what it is, the card deserves 5 stars.