Author: Robert Hyatt
Date: 13:27:10 05/18/05
Go up one level in this thread
On May 17, 2005 at 21:08:08, stuart taylor wrote: >On May 17, 2005 at 20:44:24, Marc D wrote: > >>On May 17, 2005 at 20:37:26, stuart taylor wrote: >> >>>On May 17, 2005 at 20:15:58, Marc D wrote: >>> >>>>On May 17, 2005 at 19:58:35, stuart taylor wrote: >>>> >>>>> 1). What exactly is the implications of RPM in hard disks? >>>>>a). in comparing 42000 rpm to 72000 rpm, >>>>> >>>>>b).what difference does this make to speed of computer functions, and which >>>>>computer functions does it affect? >>>>> >>>>>c).Does the new 915 chipset make the rpm slower? (I read that they make >>>>>something a little slower, but I couldn't understand exactly what, and if it >>>>>causes any handicap). >>>>> >>>>>d).One computer salesman told me over the phone that it represents the weakness >>>>>or strength of the computer. Does he know what he's talking about? >>>>> >>>>>2).What is the difference between the proccessors from Intel Pentium Mobile >>>>>technology, if it is 730, 735, 740 till about 770 etc? >>>>> >>>>>Thanks for any answers, information or opinions. >>>>> >>>>>S.Taylor >>>> >>>>Hi >>>> >>>>1)i think you mean 4200 and 7200 rpm >>>> >>>>2)it mainly affects the cpu clock speed >>>> >>>>Processor Name Architecture Cache Clock Speed Front Side Bus >>>> >>>>Intel® Pentium® M processor 770 90 nm 2MB L2 2.13 GHz 533 MHz >>>>Intel® Pentium® M processor 765 90 nm 2MB L2 2.10 GHz 400 MHz >>>>Intel® Pentium® M processor 760 90 nm 2MB L2 2 GHz 533 MHz >>>>Intel® Pentium® M processor 755 90 nm 2MB L2 2.0 GHz 400 MHz >>>>Intel® Pentium® M processor 750 90 nm 2MB L2 1.86 GHz 533 MHz >>>>Intel® Pentium® M processor 745 90 nm 2MB L2 1.80 GHz 400 MHz >>>>Intel® Pentium® M processor 740 90 nm 2MB L2 1.73 GHz 533 MHz >>>>Intel® Pentium® M processor 735 90 nm 2MB L2 1.70 GHz 400 MHz >>>>Intel® Pentium® M processor 730 90 nm 2MB L2 1.60 GHz 533 MHz >>>>Intel® Pentium® M processor 725 90 nm 2MB L2 1.60 GHz 400 MHz >>>>Intel® Pentium® M processor 715 90 nm 2MB L2 1.50 GHz 400 MHz >>>>Intel® Pentium® M processor 705 130 nm 1MB L2 1.50 GHz 400 MHz > >Do any of these have any correlation in regards to RPM too? [or is that a >completely different, unconnected speed matter?] > >>>> >>>> >>>>Regards >>>>Marc >>> >>>WOW! So they come together!? So I don't need to look at the rpm when deciding >>>about which Intel Mobile? I might as well just look at the Ghz, to see how the >>>speed will be? (in my case 1.73) >> >>the faster rpm could be usefull when accessing (large)tablebases on the hard >>drive. >> >>i don't know how effective greater front side bus speed would be for computer >>chess playing therefore a 400 Mhz could also do. > >Might a 533 Mhz fsb in any way counteract any drawback in a slower RPM? > >> >>Marc >>playing These are different things. FSB simply measures raw bus speed, which translates into raw bus bandwidth. This has nothing to do with disk RPM speed at all. The faster the bus, the faster you can get data across the bus, whether it be CPU to memory, or memory to an I/O device. RPM limits the number of random I/O seeks you can do on a disk drive, in a specific interval of time. Faster RPM, you get lower I/O latency, so you can do more random reads/writes in the same time interval, which makes that part of things go faster. RPM doesn't affect non-I/O speeds at all...
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