ATP 16GB ProMax II 650x CF Card - Performance Testing and Conclusion

Article Index
ATP 16GB ProMax II 650x CF Card
Features, Specs and Test Setup
Performance Testing and Conclusion

Performance Testing:

Although I don't have the results of all three cards in HDTach, you can check over here for the results from the previous cards.  Also we added Crystal DiskMark this time around as well.

Crystal DiskMark
Crystal DiskMark


The SanDisk card managed to burst a bit faster at 67MB/sec, but was able to sustain a read speed of 34.6MB/sec.  ATP trails in the burst with a top-end of 55.1MB/sec, but manages to keep reading faster at 52.3MB/sec.  It certainly is no slouch as you can see in Crystal DiskMark as well.  Even though the random 4K and 512K performance isn't great when writing to the card, keep in mind that RAW image sizes are around 9MB.  You'll see great performance on this card.

With those numbers in mind, we popped these cards into the D300s and started clicking.  We shot images in bright daylight at 1/200 shutter speed at ISO100, with no noise reduction.  The Tokina 11-16mm lens was set at f2.8 and we ran through a couple of tests.  The first test was to see how fast the camera could fill the buffer and once it was full, we'd take two more frames to get our first result.  In RAW mode, the images at 4288x2848 and were averaging about 9.28MB in size.  The ATP card shot 19 images in exactly 3 seconds.  The buffer filled at about 17 images and we snapped a couple more for a realistic result.  The SanDisk card performed one image faster.  The Lexar card started out pretty good, but when the buffer filled, it slowed down to a crawl as it couldn't write data very fast.  We took 19 images in 5 seconds with this card.

Once we did the initial speed test, we timed out how long it took to take 30 images.  Once again we started out with the ATP ProMax II, and took 30 images in just over 5 seconds.  The SanDisk Extreme Pro managed 30 images in 5 seconds flat.  That works out to six images per second - including the time it takes to write to the card once the buffer is full.  The Lexar card took 19 seconds to snap the same 30 image set.  The first 17 were very fast, but the next images were painfully slow.

  • Lexar - 19 images in 5 seconds = 9.28MB/image * 19 Images / 5 sec. = 35.26MB/sec write
  • Lexar - 30 images in 19 seconds = 9.28MB/image * 30 Images / 19 sec. = 14.65MB/sec write
  • SanDisk - 20 images in 3 seconds = 9.28MB/image * 20 Images / 3 sec. = 61.9MB/sec write
  • SanDisk - 30 images in 5 seconds = 9.28MB/image * 30 Images / 5 sec. = 55.68MB/sec write
  • ATP - 19 images in 3 seconds = 9.28MB/image * 19 Images / 3 sec. = 58.5MB/sec write
  • ATP - 30 images in 5.5 seconds = 9.28MB/image * 30 Images / 5.5 sec. = 50.62MB/sec write


The above information doesn't really indicate actual write speed as the camera buffer is holding 17 images and writing as fast as possible.  The reality is that you can continue to shoot 5 images per second while the ATP card is clearing the buffer and keeping you shooting.  That is a pretty nice result from an affordable card.




Since we reviewed the SanDisk Extreme Pro 16GB card that debuted at $335USD, it has dropped greatly in price to an almost-respectable $179USD.  That puts the ATP card in a bit of tight spot as it will need to be priced significantly lower in order to grab people's attention and their wallet.  It's tough to find online and the only price we could find was overseas and translated to $147USD.  At that price, it is a bit cheaper than the SanDisk card but I feel that many professional photographers would rather trust the name of SanDisk over ATP.  That being said, the ATP ProMax II card is wicked fast.  In fact on PC benchmarks, it edges out the SanDisk card by a few MB/sec.  In-Camera performance shows it to be very fast, but slightly slower than the SanDisk Extreme Pro card.  Still it's not slouch when you can take 30 RAW images in a little over 5 seconds.


  • Very Fast Card
  • Durable CompactFlash Design
  • 5 Year Warranty



  • Not as fast as stated




I'd like to thank ATP Electronics for loading out this ProMax II 16GB CompactFlash card for us to look at.  If you have any questions or comments, please post them in the forum at the "Comments" link below.