On your 2nd point, SRAM might be larger, but remember your program is running in it. EEPROM on the other hand is all there for you to write data to, and you'd be able to store up to 341 of your 3 integer value sets before you ran out.
Thanks for the help! I already know each integer takes 2 bytes. Thats 6 bytes for the ints and 2 bytes for the commas, 8 bytes.<snip>The EEPROM is 1024 bytes right? So 1024/8=128 value sets. I dont understand how you get 341, thats 1024/341=3.002 bytes?
And I thought the SRAM because yes it has more space and you have to declare the size of an array at initialization anyway, so I can just see how much memory my sketch takes (slightly more than half) and then assign some (not all) of whats left for my array? Or would that slow down the processing or something?
edit: Is the playground link for writing the data bytewise? So thats how you can store the integer values without a comma? Does that mean its being written like this? 28 23 55 27 22 54 ? for two 3 int entries? Only in bytes?