HP 16 GB Class 10 SDHC Flash Memory Card CG789A-EF (Amazon Frustration Free Packaging)

I recently purchased this HP CG790A-AZ 32 GB Flash Memory Card Class 10 SDHC, mostly because it is budget-priced (similar class-10 32GB card from Sandisk would cost nearly twice as much). To my surprise, this HP card turns out to be faster than all my other class-10 cards.

I used a benchmark program called "H2testw v1.4" to find out the write speed for large (1GB) files. This is essentially the same as the sequential-write speed used for SD card speed ratings. To qualify as a class-10 card, the card must be able to sustain sequential-write speed of 10MB/s.

Here are the results for all my class-10 SDHC cards:

HP CG790A : 15.1MB/s (* see update)

Transcend TS16GSDHC10E : 14.6MB/s

PNY P-SDHC16G10 : 13.6MB/s

Kingston SD10G2/16GB: 10.7MB/s

Wintec Filemate 3FMSD32GBC10-R: 10.2MB/s

(See the chart I uploaded to 'Customer Images')

For completeness sake, I also benchmarked this HP card using other programs, including "Flash Memory Toolkit v2.0" and "CrystalDiskMark 3.01". The results are even more impressive (see 'Customer Images' section for details). The HP card delivered excellent write speed for both large and small files, while all other cards performed poorly for smaller files.

Of course, the REAL benchmark needs to be done in the actual application. For that, I inserted each card in my Canon Rebel T1i, set it to save both RAW and JPEG formats, then took 10 consecutive shots in burst mode. Again, the HP card is the fastest, taking only 16.7s to save all 250MB of data. In contrast, the slowest card (Wintec Filemate) took 28.3s to finish.

Bottom Line:

This HP SDHC card, despite of its low cost (I picked "Amazon Frustration Free Packaging"), is actually the fastest among all class-10 cards I have tested. That makes it the best deal in my book.

[Update on June 26, 2012]

I purchased another HP 32GB SDHC card, because the current price (66 cents per GB) is just too good to pass up. The read/write speed of the second card is identical to that of the first one. So the quality is consistent.

[*Update on May 24, 2013]

The old card reader I used (Transcend M5) was limiting the speed of this HP class-10 card. I re-ran the H2testw benchmark with a new Transcend USB 3.0 Card Reader (TS-RDF5K), and the Write speed jumped from 15.1 to 21.3MB/s. The Read speed also jumped from 18.1 to 30.1MB/s, which is limited by the USB 2.0 port I used. I should expect even better results if I had a USB 3.0 port.

I picked this up in a gold box deal at a great price. I wasn't sure how fast it would really be ("Class 10" is rather ambiguous, since it only means >=10MB/s write), but I'm very impressed. This card is fast and inexpensive.

Raw ATTO Benchmarks Chunk sizes in kB Write & Read speeds in kB/s

Size--Write---Read

0.5---160-----1070

8-----2272----14194

64----13429---36008

256---17700---47403

1024--26683---49435

4096--26816---51523

8192--26703---49618

Equivalent max 'x' ratings (where 1 'x' = 150kB/s):

26816kB/s / 150 kB/s = 178x write

51523kB/s / 150 kB/s = 343x read

Data on the back (As of April 9th, 2012):

Made in Korea

SD32G10133MMC4HB

1VJS414PVB 1312

Buy HP 16 GB Class 10 SDHC Flash Memory Card CG789A-EF (Amazon Frustration Free Packaging) Now

I've only had it for a few days, but so far, so good. The speeds are fine, haven't classified them yet.

As for the other review, the card does seem slightly thicker than other SD cards. There is some extra friction when putting it into my Canon 300 HS, but it does not get stuck.

Read Best Reviews of HP 16 GB Class 10 SDHC Flash Memory Card CG789A-EF (Amazon Frustration Free Packaging) Here

Tested against an Adata class 10 card and it was a bit faster. It ran about 19.6MB/S write speed for most of the ATTO benchmarks, and 20MB/S for read. The price is really good for a real class 10 card. It works in my Canon T2i just fine

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I had Kingston SD cards with my old Canon Powershot S3 IS. I bought a class 4 SD card for my new Canon EOS T3i but I was unable to record 1080p videos with that card. So I decided to by Class 10 SD card.

I found this card for a good price and bought it. I am very much satisfied by the throughput that I get with this card. I am able to record 1080p 30FPS videos with my T3i using this card.

I am very much happy that I bought this card. The packaging of this card was not as impressive as any other card, but thats fine as far as it have such a great throughput.

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