New
#11
I have the gigabyte 4650 and it does what I need it to and quickly
tw33k - what PSU do you have???
I don't think the OP has a small form factor PC, he just said that someone posting a review had one. I think he was thinking if it worked for him with his 220 w PS it should work for me. Small form factor doesn't necessarily mean a normal sized graphics card won't work. A big high end card probably wouldn't fit and even if it did it would probably over heat, but a good mid range card would likely be OK. I'm thinking you might be confusing low profile with small form factor. in that case you are correct. A full size card won't fit in a low profile case and the low profile card probably won't have the same performance as a full sized card.
Well, seeing as they're both 1GB cards with the same chip on them, I should think the advantages/disadvantages are limited to type of cooling and therefore overclockability + noise level, connectivity and not much else I guess.
Consider what you want it for. If you want to overclock, get the one with the biggest fan. If you want a quiet PC, get the one with the smallest fan or even passive cooling. I should think that no matter what one you choose performance will be about the same at stock levels seeing as they're essentially the same card.
I notice the Gigabyte one has an OC in the model number so it may already be overclocked. If it is it should be the faster card.