Should I upgrade to 3GHz or upgrade to X1900 XT instead

Question

Should I upgrade to 3GHz or upgrade to X1900 XT instead??
Which of these would give me more bang for the money I spent? Would the better graphics card help me when Leopard is here? or is the extra CPU better?
Your opinions are needed!
Thanks

Answer 1

I think it's exactly 10%. Everything in the system
runs as a multiple of 133Mhz. The 3Ghz CPUs aren't
really 3Ghz but 2.93Ghz (i.e. 22*133Mhz versus
20*133Mhz for the 2.66Ghz CPUs).
This is not true.
Intel's information on their Website states that they are indeed 3 GHZ, actually using an 8x multiplier:
The FSB is actuallty 333MHz FSB is quad pumped (for 1333 MHz total per chip), not 133 MHz.
Therefore the actual speed of the chip is 2.997 GHz (effectively 3GHz) using a 9X multiplier.
The 2.66 is an 8 multiplier (2.664 GHz).
You may be confusing the Xeon 5100 series with it's 1333 MHz bus with the Core 2 Duo chip. They are actually the same chip with two important exceptions:
1) The Xeon 5100 series allows for multiple processors (e.g. 2 dual core chips)... Core 2 Duo only allows for one chip.
2) The Xeon 5100 series has a choice of 1066 or 1333 MHz FSB (1333 only in the 2.66 and 3.0 models), whereas the Core 2 Duo chips are only up to a 1066 MHz FSB for now (266 MHz quad pumped).
Thus the top line Core 2 Extreme only runs at 2.93 GHz, which on that chip is an 11X multiplier.
The extra FSB speed of the 5100 gives a slight bandwidth and speed increase over the Core 2 all other things being equal.