KOMPUTERBAY128GB Professional Compact Flash Card CF 1050X Write 100MB/S Read 160MB/S Extreme Speed UDMA 7 RAW 128 GB

UPDATED: When I originally posted the review below I did not receive a response from Komputerbay by email or when I tried contacting them by phone. Before sending back the card I decided to call one more time and when I did get an answer things worked much better. Here is my update. After using the July 22 build of the ML RAW nightly builds and going through the steps described to me over the phone with Komputerbay customer service; I have been very pleased to say I have experienced no dropped frames with the following exceptions, which I should point out are not the fault of the card but the nature of bleeding edge software (that is still amazing) just an FYI: When there is less than 1gb of card space left or if I start my recording while in a menu.-------I began shooting with the ML RAW using a 5D Mark III around mid June. I tested the SanDisk Extreme Pro Cards and Lexar 1000x Cards. Both performed very well and because of higher write speeds I purchased some Lexar 1000x Cards with limited storage capacity over the San Disk Extreme Pro. I purchased the smaller capacity cards with the hope that the price for faster CF cards would eventually come down.It wasn't until KomputerBay released their 1050x cards I thought I may give them a shot, as previously they did not seem to have the write speeds or consistency necessary for ML RAW. After shooting with the new KomputerBay 128GB 1050x card for the past three days I am disappointed. It is clear that it does not perform as advertised. Write speeds under 75 mb/s this card can handle OK, but will still have some drop outs. More importantly, anything above that and you will frequently experience multiple dropped frames (So if you plan on shooting 1920x1080 24fps or higher this card WILL NOT work for you). Advertises 100 mb/s write speeds <--- this is not true for the card I just received; in fact, I was unable to capture sequential clips without dropped frames when shooting 1080p. This has never been the case for my Lexar 1000x cards nor when I was testing the San Disk Extreme Pro Cards. Maybe I have a bad copy? I would be happy to try my luck with a replacement; however after contacting support they will only let me return the item for a refund.Until there is more consistency with the products from this company I can't recommend purchasing anything from them. It is not about getting what you pay for it is about false advertising and misrepresentation of a product.Your time and money is better spent on a name brand card that you can rely on.

I followed all instructions: used a UDMA 7 compatible USB 3.0 card reader (Lexar), formatted as XFAT.Basic file copies did not work. File delete did not work.I repartiitioned into 32GB partition and formatted as FAT32 thinking there might be an issue with xfat. This would not work either.Exact same issue.I then loaded this into my 5d mark II and proceeded to shoot several test shots and short movies. No errors were reported while recording. But while playing, the video just froze. And the camera returned an error saying that the file was not readable.I loaded the card into the card reader and attempted to retrieve, my pc reported that the card was corrupted and needed to be reformatted.There wasn't one scenario where the card worked! This is an absolutely unusable card. Do not waste your time and money.The good news is that Amazon refunded my money. I will put this to use towards a more solid and reliable card.

I have been using these cards in the field on a documentary for the last couple of months and, at first, I was experiencing problems and inconsistencies which prompted a hasty review of these cards. After messing around with the ML settings for quite a while, I discovered that the cards work just fine as long as I turn off most if not all of the ML features such as fps override, global draw, etc. I have been meaning to update this reveiw for a while but have just been too busy filming with these cards.

Hi there, I received the items on time but I only had the chance to test them today and 1 of the cards was not working, went to the amazon.com to my orders, it was already expired, the return date was expired yesterday, just like a shock! Could you please accept 1 of the cards to return, it's not working and it's so expensive. Please help me out here!

I've been using a Komputer Bay 64GB 1000x for Magic Lantern RAW on a 5D Mark III that I've been very happy with and needed more space.This card is not consistently fast enough to do Magic Lantern RAW. It starts slow and gets hit with lag spikes. If the lag spike hits before the slow start has caught up, or if you get hit with a few lag spikes in a row, you'll get dropped frames. I've also seen ML throw a few errors about failed writes.From a benchmark perspective, using the same Blackmagicdesign Disk Speed Test as shown in the product pictures I get ~80MB/s writes when it runs good, but it's not consistent. Speed will drop down into the 50s during many runs.I emailed their support and there was no reply.Updated 4/9/2014Support did finally get back to me after a few days, but I had already sent the original card back. I decided to play the Komputer Bay card lottery and the 2nd one works better. It doesn't benchmark well, but in camera it starts fast and write speeds are a lot more consistent. I can get continuous recording at 1920x1152 with Global Draw on. With Global Draw off and Card Spanning on, it will do a really long take at 1920x1280.I bumped the rating to 3 stars. Support is slow, shouldn't have to play the Komputer Bay card lottery to get a good card, and it still doesn't reach advertised speeds, but it works for my needs.

I have given 2 KOMPUTERBAY 1050X 128 Gig compact flash cards the most demanding tests in assessing whether or not it is a card I can use professionally for writing 1920 x 1080 continuous 14 bit raw video files on my Canon 5D Mark 3's. The card wrote 128 gigabytes of data without a dropped frame in continuous use at both 24 or 25 FPS. I was using Magic Lantern's alpha software with the cameras and cards. For stills or video this card met the demanding use of a professional. While using their early 1000x 128 gig card I had some dropped frames and inconsistent performance and the company refunded my purchase when the cards could not deliver. These newer cards have delivered perfectly.It's difficult these days to find a product which delivers peak performance at an affordable price but these cards have.