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It's nice what people say.. I have experience with them, a lot of it. They're not fragile, and neither are the motherborad pins. Just keep in mind, you can't hit them with a hammer.. It is a CPU..Geeky1There are no pins on the CPU. As you know, they're now on the motherboard. And everything I've read about LGA775 sockets is that the sockets are very easily damaged. They're also supposedly only rated for 20 CPU insertion/removal cycles, and I've read that motherboard manufacturers are seeing real-world lifespans of about 10 cycles.
The CPU itself is less prone to damage, yes, but the pins in the motherboard are supposedly more fragile than the s478 cpu pins were.
As for DDR1 vs. DDR2 motherboards... you're right on that. I just checked Newegg. Apparently there are more LGA boards that are *not* running the i915/925 than I thought.
AMD vs. Intel...
Yes it depends on what you're doing. However, the A64 is fairly consistently faster than the P4. There is really only one area where a P4 can outperform an A64 (where the A64 has a PR equivalent to the P4's clockspeed)- video encoding. HT works well for light multitasking, but load "both" CPUs to 100% in a single CPU system and I've found that it tends to fare no better than a single cpu system with no HT. The best example I can think of of this is before PeerGuardian 2 came out. PeerGuardian 1 was a CPU hog- it could and would use 100% of the CPU power if it needed it. By the same token, a P2P app like Kazaa or Morpheus, with several thousand queued downloads, can and will use 100% of the available CPU power if it can. On a HT or SMP system you can dedicate a whole CPU to each application... that works very well on a SMP system, but try it on a single HT P4 and it runs just as slow (subjectively) as a single CPU without HT does when asked to deal with both programs at once.
HT doesn't double the speed or anything, yes, that's true. It does, however, (in short, hugely.. Read up on it for the technically correct answer) more efficiently line up processes for the processor.
I am an AMD guy myself.. I'll recommend an A64 over a P4 anyday, however, I don't say that the LGA P4 is crap. P4s performance nearly as fast in every situation of single processes, even though it's obvious which will do faster in situations such as gaming.
As a side note, i915 supports DDR1.