Maybe this would help you...
my unscientific test on a77.
Extreme Pro 30MB/s - 200x
f/1.8 1/250s ISO 100
Quality - Fine
1. Low : 3fps - maintain through-out | Buffer clear - 6 seconds
2. High : 8fps - maintain 2 sec thereafter 2-3 fps | Buffer clear - 6 seconds
3. 12fps : 12fps - maintain 1 sec thereafter 2 fps | Buffer clear - 7 seconds
Quality - RAW + JPG
1. Low : 3fps - maintain 4 sec thereafter 1 fps | Buffer clear - 17 seconds *
2. High : 8fps - maintain 1 sec thereafter 1 fps | Buffer clear - 15 seconds
3. 12fps : 12fps - maintain 1 sec thereafter 0.5 fps | Buffer clear - 16 seconds
*Note - possible extended more frame therefore takes longer to clear compare to the rest.
Quality - RAW
1. Low : 3fps - maintain through-out (tested for 4 sec) | Buffer clear - 11 seconds
2. High : 8fps - maintain 1 sec thereafter 1 fps | Buffer clear - 14 seconds
3. 12fps : 12fps - maintain 1 sec thereafter 1 fps | Buffer clear - 13 seconds
Extreme Pro 90MB/s - 633x
f/1.8 1/250s ISO 100
Quality - Fine
1. Low : 3fps - maintain through-out | Buffer clear - 1 seconds
2. High : 8fps - maintain 2 sec thereafter 3-4 fps | Buffer clear - 3 seconds
3. 12fps : 12fps - maintain 2 sec thereafter 3-4 fps | Buffer clear - 3 seconds
Quality - RAW + JPG
1. Low : 3fps - maintain 5 sec thereafter 2-3 fps | Buffer clear - 7 seconds
2. High : 8fps - maintain 1 sec thereafter 1-2 fps | Buffer clear - 9 seconds
3. 12fps : 12fps - maintain 1 sec thereafter 1 fps | Buffer clear - 9 seconds
Quality - RAW
1. Low : 3fps - maintain through-out (tested for 5 sec) | Buffer clear - 2 seconds
2. High : 8fps - maintain 1 sec thereafter 1 fps | Buffer clear - 7 seconds
3. 12fps : 12fps - maintain 1 sec thereafter 1 fps | Buffer clear - 7 seconds
i'm not that serious until want to capture every moment..more on casual and enjoying the moment..
i know fast pace activities require that.. i not investing until that level..
if let say 30mbps card still holding back the A77 by much.. then i should consider..
it's something like.. can spent until rm4k.. why not rm400..
still want to see the fact sheet ler..
Added on November 23, 2011, 8:52 pmstill slow meh?
30mbps consider class 10 right?
must upload to you tube..

Then theres nothing to worry. Since you most probably wont be using the 12fps anyways. I have 7fps, let me tell you, i've only used it once for a rugby match. 5fps? once. For an F1 thingy. 3fps? Never.