Review on Komputerbay 128GB Professional Compact Flash Card CF 600X 90MB/s Extreme Speed UDMA 6 RAW 128GB - Best Deals & Performance by Bill Schlag

Good. I am an active user of cf-cards. I have about 40 Transcend 32GB 400x cards and am generally happy with them. Decided to try this card. I have a Canon 5D MKIII so when shooting with two cards I was able to try a relatively new card. So far there are two CFs. I'm not a high speed shooter and the 5D MKIII is a fast camera so I haven't had any buffering issues but loading is definitely slower or at best on par with the Transcend 32GB 400x. From these cards I get 60Mbps - 100Mbps (100Mbps is a good match) and Komputerbay - 55Mbps - 63MBps. So I expected better performance from the 600x card. But the main problem is that one of the cards gave me this horrible "card needs to be formatted" error during recording. And this is a sign that you can no longer use this card. However, I was able to recover the photos. In all the 5 years I've used other brands, I've gotten this error once. So getting it with either card in the first month is a bad sign. Since I shoot with two cards I will still order a few, but if you shoot with a single card I recommend waiting for a better controller on the card. older generation.JosephUpdate: got a new map. It works and is actually faster, but it's bigger and I'm having a hard time fitting it into my 5d mkiii. I really have to push it.