3DMark Vantage CPU Tests
When it comes to 3DMark Vantage CPU tests, the performance increase is really low. The performance increase is, clock to clock between the Core i7-3770K and Core i7-4770K, less than 1%. The performance difference between the Core i5-3570K and Core i5-4670K is almost 1%.
3DMark11 Physics Test
The performance increase in 3DMark 11's physics test is just as small as in Vantage's CPU tests.
3DMark Physics Test
Not much to say here. 3DMark Fire Strike's physics test benefits from Hyper-Threading.