MacPro1,1 shipped with WoodCrest dual-core Xeon CPUs (best CPU was Xeon 5160). In theory and if they exist (because they're not listed on Intel Ark), you could therefore opt for those CPUs and overclock them to FSB1333 through pinmod/voltmod to obtain CPUs That would be a 25% increase over their original speed but a mere 11% over your existing CPUs, making the exercise hardly worthy in my opinion. In the Clovertown series, the only models with a lower FSB and a higher multiplier would be the Xeon E5350/X5350: FSB 1066 + max. If the new CPUs have a large L2 cache, this can significantly improve performance too. For instance, your current X5365 CPUs run at 3.0GHz, a speed obtained by multiplying 1333/4 by max. multiplier by FSB/4 (because FSB is quad-pumped). You evaluate your gain by calculating the target max.
multiplier than your current X5365 models
CPUs with lower FSB than the highest supported by the chipset (here, Intel 5000X which supports FSB 1066 & 1333). To apply BSEL/VID mod overclocking, you would need: a few weeks from now, you will have a smile on your face, and you will be glad you upgraded.Xeon X5365 CPUs are top of the Clovertown range and run at maximum FSB 1333MHz. I kept the same hard drives, other than the startup drive, so it's kind of like you upgrading your processor. Seriously, I have done some profound processing on this thing, and it never seems to buckle, not even close. but at some point, I dunno, a month or two? The computer was "broken in", and I began to experience what has become the most powerful recording system I have ever used. I thought I had made a very costly mistake. When I first got the 12-core, I was very disappointed in the lack of extra performance in DP. The systems nowadays are so complex, I think it takes some usage before the computer knows what has happened with the upgrade, and finally, in a sort of quiet resolve, everything starts to work as it should. I know this is counter-intuitive, and I do not have an explanation for it, but. I had that machine too, before I upgraded to a 12 core.
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