I don't know where you will find a 10 core Celeron, but I don't want it either way. Celeron has always been slow, low performing CPU's with very little cache memory meaning crappy processing and overall slow performance. Today's CPU's have cache memory in the high megabytes, they have increased efficiency and a much better performing architecture and design. Also, hyper threading (virtual cores) allow for double the clock speed per core as on a CPU with only physical cores, so it performs even better in that regard (although it's useless for gamers and everyday en users).
Also, 1GHz means 100MHz per core, which is unimaginably slow. You wouldn't run the slowest of programs, not to mention ancient OS's with it. Not over 10 cores, anyhow.