tim hall wrote: >Last Saturday 24 July 2004 15:12, Stefan Scheffler was like: > > >>hmm ... are you sure about the type of processor? AFAIK only Celerons >>+700 mhz support a 100mz fsb. >> >> > >I'm just reading the motherboard manual. > > > >>Intel has a utility to check cpu information bus speed and so on .. >>sadly it's windows/dos only: >>http://downloadfinder.intel.com/scripts-df/Product_Filter.asp?ProductID=441 >> >> > >Won't be much use to me then ;-) > >Thanks for the other suggestions tho' > > > >>>I think it's probably more a question of me explaining badly. I think I've >>>just set it to the maximum I can get with this mobo & processor. The one >>>weirdness is that the processor is now being detected as 900MHz, which is >>>not true. Perhaps the 1800 bogomips reading is, I don't know. >>> >>> >>now that is uh ... interesting ... so within two days you like almost >>quadrupled your processor speed .. congratulations :D >> >> > >Yeah, basically I suspect I've been driving with the handbrake on :-] > > > >>could you post the output of "cat /proc/cpuinfo"? I'd love to see that. :) >> >> > >sure: >~$ cat /proc/cpuinfo >processor : 0 >vendor_id : GenuineIntel >cpu family : 6 >model : 8 >model name : Celeron (Coppermine) >stepping : 6 >cpu MHz : 896.977 >cache size : 128 KB >fdiv_bug : no >hlt_bug : yes >f00f_bug : no >coma_bug : no >fpu : yes >fpu_exception : yes >cpuid level : 2 >wp : yes >flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca >cmov pat pse36 mmx fxsr sse >bogomips : 1789.13 > > > >>just FYI: >>"model name :" should tell you the name and aometimes the design >>speed of the cpu >>"cpu MHz" the real current speed >>"bogomips" issome weird timing value I have no idea what it means exactly >> >> >It's a semi-arbitrary benchmarking value, usually twice the processor speed. >AFAIU. > >Last Saturday 24 July 2004 16:33, Matthew Barber was like: > > >>Be careful doing something like that, especially with old boards. I >>think setting the fsb clock to "no man's land" will set the pci clock >>(and AGP if you have AGP on your board) to something unusable, unless >>BIOS locks the PCI/AGP clock to a certain range of values. PCI >>generally wants to run at about 33Mhz (unless you have a very new board >>with PCI-X or some such), and AGP at 66Mhz, and these values will >>generally be a fraction of the fsb. So if your fsb is 66Mhz, PCI will >>be 1/2FSB. If it's 100Mhz, PCI will be 1/3. Setting it to 75Mhz may >>cause it to still be in the 66Mhz realm as far as the division is >>concerned, and set PCI to around 38Mhz, which may cause a lot of >>problems. I know some BIOS will take care of this by locking AGP and >>PCI to a certain value, but I wouldn't count on it with an older >>board/bios. >> >> > >This is what I guessed, I'm using the values specified in the manual for a >Coppermine FC-PGA 600, so: >at 3x clock ratio I get: >CPU (I assume this is FSB) 100 >PCI 33 >AGP 66 >The display cache runs at 100MHz too, a 1:1 ratio seems logical. >One of the reasons I only have 192MB of RAM is because I have already been >fussy enough only to use memory that is supposed to run at 100MHz too. >No-man's land FSBs are only relevant if overclocking, which is not the object >of the exercise for me. I'm trying to optimise. > >I don't think I'm doing _too_ badly. > >Last Saturday 24 July 2004 17:49, Ryan Underwood was like: > > >>Where? Is there an online copy of this manual? >> >> > >I found one here: >http://www.motherboards.org/mobot/manuals/All/0/50/ >http://english.aopen.com.tw/products/mb/MX3WPro-V.htm > >I think I might read it now. I'm a bit confused as to why my system thinks >it's running a 896MHz CPU, But so far there's no overt signs that it isn't >happy, so I'll prod it a bit and see ;-) > >cheers > >tim hall > > > > Yeah that's close enough to 900mhz for me. Some cpu's are noted as being good overclockers, but, hell, that's a free 50% overclock! The new sweet spot for OCer's is the mobile athlon 2500/2600 (~$90US), out of the box they are ~1800 to 1900mhz and are easily hitting 2500mhz on air cooling with just a little extra voltage. The Pentium 2.4b's were easily hitting 3Ghz. Rick B
