Gear / Technical Help > Recording Media
Mix-Pre 3/6 SD Memory Cards (What works and what doesn't?)
rigpimp:
By Request from @justme
TESTING TOOLS:
Blackmagic Speed Test: https://apps.apple.com/us/app/blackmagic-disk-speed-test/id425264550?mt=12
ChipGenius: https://www.softpedia.com/get/System/System-Info/ChipGenius.shtml
FakeFlashTest: https://www.majorgeeks.com/files/details/fakeflashtest.html
H2testw: https://www.heise.de/download/product/h2testw-50539
Official SD Association Memory Card Formatter: https://www.sdcard.org/downloads/formatter/
CPDT Tool: https://maxim-saplin.github.io/cpdt_results/?about=
Card Formatting per Paul Isaacs:
Start from a clean slate i.e. low-level format your SD card using SD Formatter, then quick format the card in MixPre v4.01 before running the first test. Subsequent tests you can simply do a quick format in MixPre v4.01
Please list the following, as available, feel free to copy and paste:
------------------------------------------------
Mix-Pre type:
Manufacturer:
Model:
Rated Speed:
Class:
Serial #:
Card Size, preferably in GB:
Recording Format (Bit Depth/Sample Rate):
Number of Channels:
Phantom (On/Off):
Results:
------------------------------------------------
Mix-Pre type: 6
Manufacturer: PNY
Model: Optima, 240HD
Rated Speed: NA
Class: NA
Card Size, preferably in GB: 16GB
Recording Format (Bit Depth/Sample Rate): 24/48, 24/96
Number of Channels: 2 & 4
Phantom (On/Off): 4 channels on & 2 on, 2 off
Results: No Errors
------------------------------------------------
Mix-Pre type: 6
Manufacturer: Sandisk
Model: Extreme
Rated Speed: 80MB/s
Class: 10
Card Size, preferably in GB: 32GB
Recording Format (Bit Depth/Sample Rate): 24/48, 24/96
Number of Channels: 2 & 4
Phantom (On/Off): 4 channels on & 2 on, 2 off
Results: No Errors
Claims 8hr HD Video
------------------------------------------------
Mix-Pre type: 6
Manufacturer: PNY
Model: Performance, SD32G06100BMC4HB
Rated Speed: 15MB/s ? (covered with Sharpie)
Class: NA
Card Size, preferably in GB: 32GB
Recording Format (Bit Depth/Sample Rate): 24/48, 24/96
Number of Channels: 2 & 4
Phantom (On/Off): 4 channels on & 2 on, 2 off
Results: No Errors
Claims 8hr HD Video
------------------------------------------------
Mix-Pre type: 6
Manufacturer: PNY
Model: Performance, SD16G04000BMC2RB
Rated Speed: NA
Class: NA
Card Size, preferably in GB: 16GB
Recording Format (Bit Depth/Sample Rate): 24/48, 24/96
Number of Channels: 2 & 4
Phantom (On/Off): 4 channels on & 2 on, 2 off
Results: No Errors
Claims 4hr HD Video
justme:
Mix-Pre type: 6 (firmware 3.0.3 & 4.01)
Manufacturer: Toshiba
Model: Exceria N302 64GB - THN-N302R0640E4
Rated Speed: 90MB/s read (BM Speed Test: Read: 78MB/s Write: 27MB/s)
Class: 10, UHS-I
Serial #:
Card Size, preferably in GB: 64
Recording Format (Bit Depth/Sample Rate): 24/96
Number of Channels: 8 => 6 ISO + 2 Mix
Phantom (On/Off): 4 On, 2 Off
Result: PASSED
------------------------------------------------
Mix-Pre type: 6 (firmware 3.0.3)
Manufacturer: Toshiba
Model: Exceria N302 64GB - THN-N302R0640E4
Rated Speed: 90MB/s read (BM Speed Test: Read: 78MB/s Write: 27MB/s)
Class: 10, UHS-I
Serial #:
Card Size, preferably in GB: 64
Recording Format (Bit Depth/Sample Rate): 24/192
Number of Channels: 7 => 5 ISO + 2 Mix
Phantom (On/Off): 4 On, 1 Off
Result: PASSED
Card does not manage 8 channels @ 24/192 with a bitrate 36.9Mb/s
Firmware 3.03 Result: FAILED: "SD - Warning Record buffer error" after 45 minutes.
Firmware 4.01 Result: FAILED: "SD - Warning Record buffer error" after 2h30.
jerryfreak:
Can we omit ‘rated speed’ seems like a lot of people will quote burst speeds which are often arbitrary speeds the card manufacturer claims. For our purposes class is more useful as it’s indicative of minimum sequential write
Class 10, U1= 10 MB/s
U3, V30 = 30 MB/s
etc
Unless you want to use it as a descriptive identifier for the card- ‘Lexar 2000x’ , ‘Sandisk extreme plus 150 MB/s’ etc
Also model number and if known, country of origin may be useful. I have two sandisk cards purchased recently, one was made in China and is ‘extreme’ and is pn SDSDX-V5..... The other is made in Taiwan and is ’extreme plus’ pn SDSDX-W5. Despite one being labeled plus every rating on them are identical.
Also should we list test duration? I’ve had some tests go for over four hours and then crap out
borjam:
Dealer name and even purchase date would be most useful as well.
If got through Amazon, it’s also important to know wether it’s been sold and fulfilled by Amazon or it came from a third party seller.
There seem to be more fake cards than real ones nowadays.
jerryfreak:
--- Quote from: borjam on July 22, 2019, 06:08:31 PM ---Dealer name and even purchase date would be most useful as well.
If got through Amazon, it’s also important to know wether it’s been sold and fulfilled by Amazon or it came from a third party seller.
There seem to be more fake cards than real ones nowadays.
--- End quote ---
for sure. first thing i do with any card is write it front to back with h2testw to make sure it has full speed *and* capacity. unscrupulous sellers have found ways in teh past to make card capacity look larger than the actual writable area (like sell you a "128GB" card thats really only 32GB)
apart from that, not only are there fakes, there is malware in some cards. check out this dated, but fascinating, article.
https://www.bunniestudios.com/blog/?p=3554
im still looking for the old-school disk benchmark software that would write and graph a disk across its whole surface (premise being inner and outer transfer rates on spinning disks are vastly different)... but i feel this could be useful on making sure a card can write to full speed all the way up to the point of full
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