What is the difference between a normal hdmi cable and the one you have to buy with a ps3?

May be...

i just want to know cuz im not gonna pay 50 bucks for the one that you have to buy for a ps3 so yea id rather just buy a normal one way cheaper if theres no difference between it

there's really no difference, i compared my friends 50 dollar cable, and my 10 dollar cable, and they're just the same :)

One is probably made by Sony. You can use ANY HDMI cable.