Re: What are we talking...
Originally posted by Hugh
Okay, what are we talking about here? What are the exect advanages the 970. I have read that it will be speed, others say since it's 64bit apps can be more complex with the loss of speed.
What are the advanages (and disavanages) of the 970 over the Intel X86?
-Hugh
Advantages (970 vs. Intel x86):
1) Low power (19-42 watts)
2) Competetive performance (a 1.8GHz 970 probably isn't going to beat a 3.2GHz Prescott P4, but it'll put up a good fight, and win on vector code)
3) Runs existing PowerPC code (BIG advantage)
Disadvantages (970 vs. Intel x86):
1) Probably a more expensive
2) Probably a bit slower (although this is comparing the .13 micron 970 to the .09 micron Prescott. At .09 microns the 970 should do better)
3) Lower clock frequency is bad for marketing
Advantages (970 vs. G4 [7457])
1) SPEED (higher clock frequency, faster bus, more instructions at once, bigger L1 and L2 caches, better out of order execution, dual floating point units, etc...). The 970 will be MUCH faster than the G4 on almost all code.
2) Handles poorly optimized code better (because of improved out of order execution)
3) Future. Motorola isn't interested in desktop chips. The 970 signals that IBM is. IBM also has a great manufacturing process
4) Ability to address more memory (because of being 64 bit)
5) Better multiprocessing (although harder and more expensive to do)
Disadvantages (970 vs. 7457):
1) Price. I would expect the 970 to be at least somewhat more expensive
2) Altivec dispatch. The 970 uses the older 7400/7410 Altivec scheme.
3) No L3 cache
4) Cheaper, easier multiprocessing (but really crappy)