apparently it really is underclocked as standard)
No it is not. It scale to full 998 as it is supposed to. I'm quite certain that FPSEce makes it go all up (998). About overclocking, I never tryed it so tell us how much improvement it is at 1200.
Well I still really recomend you this software and disable autoscaling of processors frequency. Some normal thing that normaly doesnt inform processor that it should go all up will be much quicker. The most significant change I observed is keyboard. It now response really accurately and is great for typing.