As long as it simulates it a quad core, then go for it.
Go into the .ini if you can find it, and find the threaded AI line. It should say that it equals something. If it doesn't already equal 4, then change it to match it.
Then just save it. You might want to make a backup, just in case.
After that, the boost in power should allow you to keep VSync on. If not, turn the graphics down a little.
Worst comes to worst, send me a copy of the file, and I'll see if I can get on a computer in some cafe and fix down the game acceleration for you, so you can turn off VSync.