Gear / Technical Help > Recording Media
Mix-Pre 3/6 SD Memory Cards (What works and what doesn't?)
jerryfreak:
found another card laying around that works well with 4.01. only 32GB but rock solid. >30 hrs with no errors
Mix-Pre type: 6, FW 4.01
Manufacturer: Samsung
Model: "95MB/s" (U1) MicroSD EVO Memory Card with Adapter 32 GB
purchased 4/2019 from Amazon (third party vendor "T.H.E HIT EVOLUTION"), $7
https://www.amazon.com/gp/product/B06XWJM2FV
Model number: MB-MP32G
Card Size: 32GB (29.x GB usable)
Country of Origin: Philippines
Class: UHS-I, C10, U1, V90
Serial #KND73RRAC741
Tested speed:(h2testw on Ricoh PCIe SDXC/MMC Host Controller): Write: 23.6 MByte/s, Read: 63.4 MByte/s
Test 1:
Recording Format (Bit Depth/Sample Rate):24/192
Available recording time on full card at stated bitrate: 1h55m
Number of Channels: 8 (6 iso+mixdown)
Phantom (On/Off): 4 channels on
Powered by: USB-C battery
Formatted at low-level with SD formatter, then quick formatted on mixpre for first pass. subsequent passes quick formatted on mixpre
Result: PASSED. Filled entire card 8x thru with no errors. >15 hrs recording with no errors
Test 2:
Recording Format (Bit Depth/Sample Rate):24/96
Available recording time on full card at stated bitrate: 3h51m
Number of Channels: 8 (6 iso+mixdown)
Phantom (On/Off): 4 channels on
Powered by: USB-C battery
quick formatted on mixpre subsequent to 24/192 tests above
Result: PASSED. Filled entire card 4x thru with no errors. >15 hrs recording with no errors
CPDT on on Ricoh PCIe SDXC/MMC Host Controller:
jerryfreak:
Have had the best luck with 32GB SDHC cards so im trying this SanDisk pro full size
Mix-Pre type: 6
Manufacturer: SanDisk
Model: Extreme Pro 32GB SDHC UHS-I Card ("Older generation" - "95 MB/sec")
purchased 10/2019 from Amazon (direct), $13
https://www.amazon.com/gp/product/B01J5RHBQ4
Model number: SDSDXXG-032G-GN4IN
Card Size: 32GB (29.7 GB usable)
Country of Origin: Taiwan
Class: UHS-I, C10, U3, V30
Serial #BM19197807880
Tested speed:(forgot to record)
Test 1:
Firmware: 4.01
Recording Format (Bit Depth/Sample Rate):24/192
Available recording time on full card at stated bitrate: 1h55m
Number of Channels: 8 (6 iso+mixdown)
Phantom (On/Off): 4 channels on
Powered by: USB-C battery
Formatted at low-level with SD formatter (default 32gb cluster size), then quick formatted on mixpre for first pass. subsequent passes quick formatted on mixpre
Result: PASSED, 3X through no errors
Test 2:
Firmware 3.03 (reverted after display lock up errors on FW4.01)
Recording Format (Bit Depth/Sample Rate):24/192
Available recording time on full card at stated bitrate: 1h55m
Number of Channels: 8 (6 iso+mixdown)
Phantom (On/Off): 4 channels on
Powered by: USB-C battery
quick formatted on mixpre subsequent to tests above
Result: PASSED, 6X through, no errors
Test 3:
Firmware 3.03 (reverted after display lock up errors on FW4.01)
Recording Format (Bit Depth/Sample Rate):24/48
Available recording time on full card at stated bitrate: 7h3xm
Number of Channels: 8 (6 iso+mixdown)
Phantom (On/Off): 4 channels on
Powered by: USB-C battery
quick formatted on mixpre subsequent to tests above
Result: PASSED, once through, no errors
-----------------------------------------------------
different card (#2), also purchased from Sandisk on Amazon, same specs and origin as above, SN BM19323807880
Tested speed:(h2testw on Ricoh PCIe SDXC/MMC Host Controller): Write: 49.1 MByte/s, Read: 66.5 MByte/s
CPDT on Ricoh PCIe SDXC/MMC Host Controller:
-----------------------------------------------------
different card (#3), also purchased from Sandisk on Amazon at same time as card #2, same specs and origin, "Serial Number" same as card #2 above (BM19323807880), so obviously more of a "lot number" of sorts
Tested speed:(h2testw on Ricoh PCIe SDXC/MMC Host Controller): Write: 49.3 MByte/s, Read: 66.5 MByte/s
CPDT on Ricoh PCIe SDXC/MMC Host Controller:
CPDT on Lexar SR2 USB reader:
justme:
I’ve found that cards that perform poor on random writes will get hit with buffer error failures.
Running tests with CPDT on freshly formatted cards shown that cards with random writes around 1MB/s will fail in MixPre-6 within a few seconds only when running 8 channels in 24bit at 192kHz. Even if the cards do manages to write 30-40MB/s sequentially.
When cards reaches 3.5MB/s* at random writes they appear to be stable for 8ch recordings.
Some cards with random write in between 2-3.5 MB/s seems to be more down to for how long you record and some shear luck.
https://maxim-saplin.github.io/cpdt_results/?about=
* revised from 5MB/s
** revised from 3-4MB/s
jerryfreak:
Mix-Pre type: 6, FW 4.01
Manufacturer: Lexar
Model: Professional 1000x 32GB SDHC UHS-II Card
purchased 10/2019 from Amazon (direct), $12.50
https://www.amazon.com/gp/product/B00PLENZF2
Model number:
Card Size: 32GB (29.2 GB usable)
Country of Origin: Korea
Class: UHS-II, C10, U3
Serial #L121472 00772-V3032GBML A 5218B
rear of card is marked "Lexar, an affiliate of Longsys, an Chinese Company"
Tested speed:
(h2testw on Lexar SR2 USB3 (UHS-II)): Write: 13.0(!) MByte/s, Read: 114 MByte/s
(h2testw on Ricoh PCIe SDXC/MMC Host Controller (UHS-I)): Write: 23.0 MByte/s, Read: 66.1 MByte/s
card does not meet U3 spec for sequential write! rear of card is marked "Lexar, an affiliate of Longsys, an Chinese Company". I have heard Lexar quality has fallen off since becoming acquired
Test 1:
Recording Format (Bit Depth/Sample Rate):24/192
Available recording time on full card at stated bitrate: 1h53m
Number of Channels: 8 (6 iso+mixdown)
Phantom (On/Off): 4 channels on
Powered by: USB-C battery
Formatted at low-level with SD formatter (default 32gb cluster size), then quick formatted on mixpre for first pass. subsequent passes quick formatted on mixpre
Result: PASSED (surprisingly), 6X through so far, additional testing in progress
CPDT on on Ricoh PCIe SDXC/MMC Host Controller:
jerryfreak:
--- Quote from: justme on October 03, 2019, 12:29:39 AM ---I’ve found that cards that perform poor on random writes will get hit with buffer error failures.
Running tests with CPDT on freshly formatted cards shown that cards with random writes around 1MB/s will fail in MixPre-6 within a few seconds only. Even if they do manages to write 30-40MB/s sequentially. When running 8 channels in 24bit at 192kHz.
When cards reaches 5MB/s at random writes they appear to be stable for 8ch recordings.
Some cards with random write in between 3-4 seems to be more down to for how long you record and some shear luck.
https://maxim-saplin.github.io/cpdt_results/?about=
--- End quote ---
outstanding info. will test cards and update posts
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