Slow CF Benchmark on Computer

[tuckertota]

I bought 2 Komputerbay 1066x 128gb cards. I will be working with a 5D3 (shooting raw), but don't have access to the camera yet so can't test with camera.

I'm on a mac and tried using F3 software to test speeds on the two cards. Got an average write speed of 75MB/s on both cards. I also tried the GUI version called "sdspeed", and the black magic disk speed test, all with the same results.

I'm using this transcend USB3 card reader: http://amzn.com/B0056TYRMW

Are those the speeds I can expect in camera? If so I'll need to send them back, but I've heard the 1066x are usable for recording continuous 1080p MLV with sound.

[Walter Schulz]

Make sure to have cardreader's latest firmware revision installed (TS26). F3/h2testw are for detecting flash fraud and not that good in determine maximum card performance.

[tuckertota]

Thanks, I didn't realize card readers had firmware updates.

The transcend update software doesn't seem to be working for me, I keep getting "no device found". I tried a different computer, same thing.

I'm on Mac 10.11, maybe there's a compatibility issue? I don't have access to any older OS macs.

[Walter Schulz]

Google for "csrutil" and how to temporarily disable SIP (System Integrity Protection) and retry.

[tuckertota]

Disabled SIP and I still get "no device found"

I think I'll just try to find a different computer to update the reader.

[tuckertota]

Update: was able to update the RDF8 firmware with a windows computer. Card speeds still averaged 75MB/s

But I borrowed a 5D3 from a friend, did a benchmark, and both cards were writing at about 90MB/s (mlv sound off) 86MB/s (mlv sound on). 24p. 1080p.

So testing card speed doesn't seem to be accurate via usb3 reader. And both komputerbay 128gb 1066x card are working great.

[Walter Schulz]

May I ask for the Mac type you're using?
I don't get what you mean with "averaged 75MB/s". Do you have a snapshot of Blackmagic Disk Speed Test? Upload it somewhere and link it here, please.

[tuckertota]

I don't know why, but now I'm getting much higher read/write speeds (118 write, 131 read) http://imgur.com/nhpW9sp

I spent a couple hours using the cards on a borrowed 5D3 (benchmarked, test shots, formatted in-camera) Maybe that has something to do with the change?

I just tried formatting on my computer using disk utility, but I still get high speeds. So something happened these last few days that made the cards read/write via USB3 reader at much higher rate.

When I said averaged 75MB/s, I mean that I tested with F3, SDSpeed, Blackmagic, and all were appx 75MB/s.

Using a 2012 13" MBP.

[DeafEyeJedi]

Any ML Benchmark screenshots for verification, please?

[tuckertota]

Here are benchmarks for both cards. Global Draw ON. MLV Sound Off (should audio on/off make a difference? I benchmarked both ways and it seemed to be the same)

Card 1

Card 2