The SDHC card is damn fix so should - as long as the camera has a corresponding memory access - even RAW continuous shooting succeed. Unfortunately, the PEN's have only one "not quite slow" but no fleet connection. A gain in speed as opposed to the Transcend Class 10 is in this case rather not warnehmbar - it is in RAW + Fine also approximately 1 frame / s down written.
Quite different is the situation if you have a slightly more upbeat memory connection. In Ricoh SD / MMC card reader my Thinkpad X220, the following values for the 16GB card surrendered to the Heise Tool (h2testw):
37-38 MB / s read, 30-32 MB / s
In RAW + Fine mode in the Olympus E-P1, E-PM1 and E-PL3 is about an image / s "written down".