Archived from groups: alt.comp.periphs.mainboard.asus (
More info?)
Paul,
Thanks for the information. It is much appreciated.
Regards,
Bill
"Paul" <nospam@needed.com> wrote in message
news:nospam-1704050403500001@192.168.1.178...
> In article <fbm8e.18323$Xm3.7800@trndny01>, "Bill W"
> <wr.wittmer1@nospam_verizon.net> wrote:
>
> > I am going to a computer show tomorrow and I am looking to upgrade the
CPU
> > on my P4PE motherboard with the 478 socket. The specs state it supports
> > 3.0Mhz +, but I am wondering what is the maximum that the motherboard
will
> > support. Any information will be appreciated.
> >
> > Regards,
> > Bill W
>
> If you look here:
>
>
http://www.asus.com/support/cpusupport/cpusupport.aspx
>
> and enter P4PE, the list looks to be all 0.13u silicon.
> There are ordinary Celerons listed (but no 90nm "Celeron D"
> processors). The Pentium4 processors listed go up to 3.2GHz
> and are Northwood 0.13u silicon. There are no Prescott 90nm
> processors with 1MB cache listed there.
>
> The best practical processor, is the 3.06Ghz/FSB533/512KB
> cache processor - the first processor to have Hyperthreading.
> The reason this processor is good, is because you can run
> two double sided sticks of memory on the memory bus, when
> running at the normal rates associated with that processor.
>
> If you want to live on the wild side, there was an overclocking
> option for that board as well. You can run a 3.2GHz/FSB800/512KB
> Northwood processor, and it will run pretty well exactly at FSB800
> and not much more. The memory bus, under those conditions, runs
> at DDR400, and the signal integrity of the memory bus is such,
> that only one stick of memory will work. If you wish to buy a
> processor like that, you might search for a single good quality
> 1GB double sided DIMM. One with 16 chips on it, each chip being
> 64Meg by 8 bits.
>
> If you want to shop for that stick of memory, while at the
> computer fair, be careful, as there is plenty of non-compliant
> generic 1GB sticks being sold for cheap (no brand name on the
> memory chip and/or on the DIMM itself). They do not use 64Mx8
> chips and could cause problems when you get it home. Crucial,
> Kingston, Corsair, OCZ, might sell you a compliant memory, but
> the price difference between the "gambler" RAM and good RAM,
> will make the gambler RAM very enticing.
>
> So, safe play is 3.06GHz/FSB533/_512KB_ cache. The 512KB is
> one of the indicators you are getting the right one. These
> are getting hard to find, as Intel has stopped making them.
> A 3.2GHz/FSB800/_512KB_ Northwood 0.13 micron processor is
> your "single DIMM overclocker" option. The 845PE is actually
> a pretty good Northbridge, and according to one of the hardware
> review sites, has as low a latency as some of the newer dual
> channel boards, when run at FSB800. But one limitation you
> will continue to have, is the P4PE has a single memory channel,
> so the memory bandwidth won't be quite as great as a dual
> channel board using two matched sticks of RAM. (The difference
> might equal a 10% application performance difference, in a
> memory intensive program. Email, web surfing, and office
> applications don't count as memory intensive.)
>
> I hope your power supply is ready for the upgrade.
>
> This is an example of a 3.2Ghz Northwood:
>
>
http://processorfinder.intel.com/scripts/details.asp?sSpec=SL6WE&ProcFam=483&PkgType=ALL&SysBusSpd=ALL&CorSpd=ALL
>
> I found it by selecting Pentium 4 from the list here:
>
http://processorfinder.intel.com
>
> The 82 watt power rating, means 82W / 12V = 6.8 amps. The
> motherboard Vcore converter is 90% efficient or so, so that
> means the current used by Vcore will be 6.8 / 0.90 = 7.6 amps.
> 1 amp for cooling fans, 1 amp for a high end video card,
> 0.5 amps per idling hard drive, means you need at least 11-12
> amps on the +12V output of your power supply. I recommend a power
> supply with 12V @ 15 amps minimum, as the extra capacity gives
> the power supply some breathing room (you don't want to run
> a PSU at its limits all the time). A quality 350W power
> supply can do this, while some super-cheap "500W" supplies
> have only 10 amps to offer. Reading the label on the side
> of the supply, is how you get the necessary information.
>
> Have fun,
> Paul
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