ceapy said:
OrGoN3 said:
It's not the class of the card that matters in this case. It's the card's random access speed (or rate) that matters. Classes are for their max transfer speed. NOT their random access speed.
Then are you saying that all memory cards have the same random access speed?
And I thought the class represented the Minimum transfer speed.
Different brand memory cards have ALL different speeds. The "class" represents a guaranteed sustained write speed to the SD; Class 2 means a sustained write speed of 2MB per second, Class 4 is 4MB...and so on.
Read speed is not rated, but is ALWAYS faster than the write speed. For instance, my Sandisk Class 2 16gig writes at 3.8megs (just missing a class 4 rating), but reads at 18megs per second.
Random Access Speed is the SD's response time to any request made to it. The closer you can get to an "instant" response, the better. The problem is, it's usually not an advertised specification. So it's tough to determine what you will get when choosing an SD card to buy. This where where the brand-name SD cards usually shine. For instance, a Sandisk SD card will almost always have quick response time, regardless of its Class rating. There are other SD brands that are good...Toshiba is one, but I generally just stick to Sandisk these days, so I don't really know what-all SD brands are considered good anymore. Maybe someone else can help with that.
Random Access Speed seems to only be important to "some" DS flashcarts. Otherwise, for other devices such as cell phones, mp3 players, cameras, etc. it's not a vital specification for the device to work. That's probably why most companies never bother to mention the response time specification.
Most newer flashcarts have workarounds in place to fix problems between slow SD cards and demanding games. It's generally not a problem anymore....unless you have a REALLY crappy (and/or failing/defective) SD card.....or a really old flashcart that isn't "officially" supported anymore.