Primate Labs has released benchmarks comparing the performance of Snow Leopard to Leopard.
To find out just how much faster existing applications run under Snow Leopard, I ran Geekbench on my MacBook Pro under Leopard and Snow Leopard. Geekbench doesnt take advantage of Grand Central Dispatch or OpenCL so its a good way to determine how much of a performance boost existing applications will receive under Snow Leopard.
The system used was a MacBook Pro (Late 2008), Intel Core 2 Duo P8600 @ 2.40GHz, 2.00 GB 1067 MHz DDR3.
The results indicate a speed improvement of between 2% and 3%. Qualitatively the new OS also feels faster and smoother due to increased responsiveness.
So how did they test the 32 Bit Snow Leopard? Cause as far as I know its only created and sold in 64 Bit... Hm. Whose wrong Apple or Primate Labs (What ever that is)
If you press a button sequence on the keyboard (I don't what it is) when you boot up your computer it will boot in 32 bit. In some macs the default will actually be 32 bit and you are going to have to do the button thing in order boot into 64 bit.