How "picky" are Raspberry Pi 4 Model B [ w/ 32 & 64GB RAM ]...?

So, we bought some Raspberry Pi's, &
- like many here - I've collected my share
of uSDRAM cards, from several makers,
earlier on.

B4 I buy more RAm, I'll ask folks here
whether I can Use, eg:

  1. Samsung EVO 32 GB &/or 64 GB uSDRAM..?

  2. SanDisk of aim. capacities…?

  3. ADATA (sim.)

I know, that I must Format 64 GB cards.

What does Raspberry Pi need…?



  • It needs a micro SDCard big enough to put the OS you want to run on it along with any data you want. This assumes you only want to use the one micro SD card.

  • Depends on…
    ~ read/writes you require
    EVOs are spot on
    !Sandisk burnt out like by fire

    Use smallest possible. Makes image backups smaller and simpler.

  • Never had a problem with genuine SD cards with raspberry pi's, I would say min CLASS 10 for the SD card thou

    • +1

      SD card speed make a big difference to how long it takes to write the initial image and then to reconfigure on first boot and then subsequent boot times if you compare class 10 to U3 SD cards and U3 cards vary as well. I find U3 are better. The best I use are Samsung EVO plus SD cards as for the price the speed is not a problem.

  • +5

    SDCard # RAM….

      • SDCard and RAM are different things…

        In a Pi, the SDCard is used for storage much like a HDD / SSD in a PC so for lack of a better term it defines the amount of photos / videos / games / programs you can store on the device. Some storage devices are quicker than others so there is some influence on performance but RAM is a bit different.

        RAM is more directly connected to the number of things on your storage device which can be accessed or running at the same time, so in a general sense more is better but Pi's aren't upgradeable, so choose wisely :D

        • Correct for the level needed to answer the original end user question, but for hard core embedded H/W &S/W devs there are a few more options (USB boot, FRam and PCI express hacks).

  • I have 2 raspberry pi 4's and I use a Sandisk Extreme 64gb on one of them and a Sandisk High Endurance 64gb on the other. Both cards work without any issues.

    I recommend a minimum of 16gb microsd card with a U1 or U3 rating. Any reputable brand (samsung, sandisk, lexar etc.) should work. You can try the microSD cards you have collected, they will not damage the Raspberry Pi. However older microSD cards generally perform slower.

    Side note: The Sandisk Extreme is rated at 4000 iops random read and 2000 random write, but benchmarks show it only gets 3330 iops read and 554 iops write. If you want to buy this card don't expect it to perform well in random writes.

    • How does the Sandisk High Endurance perform w.r.t. the endurance side of things? Was thinking of buying one to see if data logging / comms intensive app would kill the SD card as it needs to store data changes on the SD card for changes in the data.

      Do you know if the endurance is on a byte or secor or some other thing? I use SD cards, but have not looked at the controller in them. I am familiar with eprom, eeprom and various flash IC's.