alexbo said:
So you guys seem to agree that the C2D chip will increase performance by about 10%. Is that because the motherboard or OS doesn't support 64-bit? (which is it, the motherboard or the OS?)
The OS is 32bit. The i945 chipset doesn't support more than 4GB of RAM but that's where any issues end.
Speed increases vary wildly depending on the type of code you run. 10% is a ballpark "average figure". Some code will see 20%, some will see 100%, some might only see 5%.
64bit mode can also slow some code down.
alexbo said:
I want a macbook, but I'm not really in a hurry. Can someone give me an estimate for how much Santa Rosa will make a difference? (is it just yet another 10%?)
Probably less, but "it depends".
The major difference for speed is the transition to the 800MHz FSB (current is 667MHz).
That will give you maybe 3-5%, maybe more, depending on the type of code you run.
Robson (flashmem cache) could show a huge speedup, especially if your tasks hit virtual memory a lot. If you don't run out, not so much.
alexbo said:
Obvioulsy, I can't wait forever, but I also refuse to buy right now, just before the obvious C2D upgrade. I'll probably go with the first gen C2D, unless you guys think that Santa Rosa in early '07 would be MORE than just another incremental upgrade. do you?
Santa Rosa is incremental in the Intel world. Most upgrades are because the upgrade cycle -- ie when newer, better parts appear -- is roughly 3-6 months. Mostly it's clockspeed bumps, occasionally it includes new SSE instructions. Core 2 is unusual in that it's a huge jump over the NetBurst days.
Santa Rosa isn't "early 07" btw. It's supposed to launch in April, so expect to see the first systems in May and the majority at the start of June.