Now I have 2 options, 1st is buy a new set of LP Ram and get D14 and 2nd is buy Corsair H100.
Both about the same price RM500++, which 1 is better ?

I read somewhere on the internet about the H100, he get worse result than a Hyper 212, so strange.

hmmm.... i'm totally new to water cooling kit, is this Rasa kit maintenance free like H100? And which model of rasa kit is around RM500 ? Which shop in lowyat can i get ?

EDIT: I'm using 650W PSU btw, is it sufficient to use a watercooling kit or D14 ?

Dimastech paint job is garbage compared to LDPC. There are also some sharp edges here and there.

Good job.
One suggestion: Instead of reusing the original metal heat spreader, try look for a piece of aluminium or copper block about the same thickness as the heat spreader, to pad it before attaching the HSF. Reason because there is a gap between die and heat spreader, and thermal compound not good to transfer heat at that gapping distance. Thermal compound is good for direct contact only. I'm just saying there is room for improvement.

One reason why Tj is hotter compared to hand touch on HSF, because it takes a long time for the Tj to reach heatsink. Thermal gradient is still very high.
Heat transfer seems to be very bad, still. What I have done, is fill up the internal of heatspreader with oil instead. A bit messy, but definitely improves the heat transfer.

anyway,do any of u have idea how far my RAM can oc? using vengeance LP 1333mhz CL9. if i want to upgrade from that ram, which speed should i opt for?