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Discussion in 'Buying Tips and Advice' started by zen.state, Dec 31, 2008.
solved long ago
While I share your passion for keeping things going, at some point you have to move on. I did this with SCSI years ago...will do with with FW at some point
I recently took a QS from a 733 (no L3) to 933. That to me was as a good value. After that, there was just too much diminishing returns in how much you are outlaying for a CPU upgrade and what you can buy on the used market.
You can get QS units with DPs, MPs, heck if you are patient a G5 for a few hundred dollars on flea-bay.
Bit more then that and you have CD2 Minis for sale.
If you are dead set on the upgrade, then its a hard call between the two CPUs. The 7448 chip is a bit different micro-architecture so the behavior of the L3 size is not as with the older 7447 chip.
Unless you can benchmark it with your exact programs/needs all you have to go off of is other benchmarks.
I would wager a small amount of money you would see diminished returns going from 1.5 to 2.0 simply because of the other system level bottlenecks start to add up: unless the code was tight and could stay on CPU, the extra Mhz won't really be felt.
Well if you would like to go uber geeky about it you could modify a dual 1Ghz Quicksilver G4 CPU for that Sawtooth. You would need to run a 12volt lead from the power supply and solder on a DIP switch to change the CPU multiplier since the QS runs on a 133mhz bus.