![]() I did test it a few times, but, did not use any of the data from it for the results. I already had a SanDisk SDDR-399 reader which I used exclusively for the testing, even though the Lexar came with a reader, I found this guy was a bit better for whatever reason on my Mac. ![]() The Prograde Digital UHS-II V90 64GB I already had Transcend "700S" 64GB UHS-II (same random write 4K IOPS QD as my existing SanDisk, but, UHS-II) Sony "Tough" SF-G64T/T1 (fastest random write 4K IOPS QD per online benchmarks) Toshiba "N502" (fastest random write 512KB speed per online benchmarks) The "real deal" Lexar 2000x UHS-II (to rule out perhaps the Prograde Digital wasn't so good) I preferred the former and wondered if perhaps another UHS-II card might give me more SanDisk-like performance (more consistent) but faster FPS rate.Īfter a deeper dive online I settled on a couple options: To my dismay, my first shooting with the Prograde Digital 64GB (indoors), I found it did deliver much faster buffer clearing times than my SanDisk UHS-I card, but, when driving AI-servo with C-RAW, the SanDisk kept chomping away on a buffer-full condition in a few, ka-chunk, ka-chunk, ka-chunk, vs the Prograde paused on full buffer and then after a bit rattled off a burst of high speed and paused again, repeat. I'd heard good things so I figured I'd give them a shot considering Lexar has been cream of the crop in the past. ![]() To start, I did some basic reading on reviews for UHS-II cards, and came across Prograde Digital, they apparently are formed from the ashes of the old Lexar, not to be confused with the new Chinese-owned Lexar. Long read ahead, highly technical, but should be informative not just for EOS R owners, future EOS M6 Mark II owners, but also future camera's sporting UHS-II. However, after I got my recent Prograde Digital 64GB UHS-II v90 card (top of the line) and under certain circumstances got more favorable results with my existing SanDisk Extreme Pro (UHS-I), I quickly realized something was up and a deep dive on the subject was in order ![]() With the new EOS M6 Mark II looming and it's smaller buffer but, UHS-II support, it's time for me to finally make the jump from UHS-I to UHS-II. ![]()
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