this might be irrelevent but my brother has the same CPU but it is a winchester core. on stock cooling i am running it at 2.2 ghz, 245 FSB with the ram also running at 245. stable in prime95 for 8+ hours. his load temps before were 38C and now 42C i believe. Depending on Temps, i think 50 is pushing it? not postive, but you should be able to get to 2.2 maybe higher. I upped his Vcore 3.3% for 2.2, it was stable at 2.4 with 6.6% more vcore but the temps were 50+ load so i decided to stick with 2.2GHZ on the stock cooling.
Hope that helps a little, goodluck with it, watch your temps and dont give too much Vcore you should be fine, use prime95 blend to test it, and to test memory (prime95 tests it as well) use memtest86. you can use this to test it alone to make sure it isnt causing failures. When you OC the ram or the CPU or both will be unstable, doing a stand alone mem test like that will let you know if the Ram can take the speeds, if not, loosen your ram timings and up the volts
PS-i havent ever seen that multiplication you used, thats pretty cool!