Memory Upgrade

All,

I am not into OC, just want DRAM that performs well. My Intel G45 Express Chipset supports DDR2-800, DDR3-1060 and DDR3-1333. I would like to upgrade from DDR2-800 to DDR3-1060.

1. How does the CPU know memory has changed? Does it self-detect or do I have to tell it in BIOS?

2. I really would like DDR3-1333, but it is still too pricey and its latency is still too high. I noticed that performance-grade DDR2-1060 has a smaller latency than standard DDR3-1060 so it would probably be a better performer.

3. What memory sticks are appropriate for my chipset: low-voltage or standard?

4. Where is the L2 Cache physically located, on the chip itself or does the CPU reserve a chunk of system memory?