You may opt for a smaller card and use CSOs to save space. Comparable to the speed differential, many games can be compressed considerably from their ISO forms. Note: Personally I was very concerned when I was unable to successfully format my card using the PSP. My thought process was that if the PSP is not able to successfully format the cards then it likely wouldn't be able to read/write data to them without issues either. This issue kept me from getting a successful build of a high capactity card for months as I searched and searched for adapters and MicroSD cards that would successfully format. Sony introduces the a7R IV with 61 Megapixel full-frame sensor". Digital Photography Review. July 16, 2019 . Retrieved July 16, 2019. You may find after reading all the information presented here that you have no need to go beyond ~200, ~400, or ~500 GB in size based on other usability factors I will discuss below.

Your formatting tool should provide an option for Cluster Size (possibly called "allocation unit size"). If anyone tells you that CSO (Compressed ISO) loading speed is negligible compared to ISO, they're lying.

Additionally, all my tests were done with MicroSD cards up to 200 GB capacity (because I got a good deal on them). This means the largest high capacity setup I have personally tested is 400 GB. Theoretically, the information in this guide should be attainable for MicroSD cards of 256 GB, 512 GB, or even 1 TB in size. Practically however it may be that the adapters on the market today have a limitation or that the CFW will not indeed support such large sizes. I will leave it up to others who have the available hardware to test this. Taub, Eric A. (February 2, 2004). "TECHNOLOGY; Memory Evolution: Survival of the Smallest". The New York Times. CBS News, 48 Hours – AIBO, The Digital Wonder Dog: Sony Spends Millions On Robotic Canine". Cbsnews.com. February 11, 2009 . Retrieved November 13, 2011. The only difference between SDHC and SDXC cards is the maximum storage capacity and default file system format.

The below has all been validated on this device running currently running 6.61 ME 2.3, though the vast majority of this should work on all of the standard PSP models using ME or PRO. There is a bit more detail below regarding FW versions (which are really beyond the scope of this guide). If it doesn't show the correct space then you won't be able to continue on with the next stage of configuration. After many tests I decided that it was unlikely I was going to ever get a clean format on anything over 128 GB. After reading rsn8887's thread above and seeing that he encountered the same issues I did I gave in to the fact that I probably have to rely on Windows to properly format the cards.

Based on this I would have to recommend #5 if you plan to only go up to 128 GB of memory. Unfortunately I couldn't get this card to reliably detect my 200 GB card and so #6 was the best choice and the one I would continue to recommend out of my tests. So you want a 256 GB card? There are some advantages in buying 1 x 256 GB MicroSD instead of 2 x 128 GB.