Archived from groups: alt.comp.periphs.mainboard.asus (
More info?)
Whow! Thanks Paul! Now I'm sure it's a bios problem. Well, the system runs
okay so I will wait some time...
"Paul" <nospam@needed.com> schreef in bericht
news:nospam-2309041241150001@192.168.1.177...
> In article <4152c7fb$0$44076$5fc3050@dreader2.news.tiscali.nl>, "Driekes"
> <biker_driekes@hotmail.com> wrote:
>
> > Hello,
> >
> > My P4R800-V Deluxe is showing the 3.20E GHz (800MHz fsb 1Mb L2 cache)
> > Pentium 4 processor as an P4 2.8GHz in the bios. In Windows XP (Home
SP2) it
> > shows a P4 3.2 on 2.8GHz. I updated the bios to the latest version but
that
> > doesn't help.
> >
> > System memory 512Mb Kingston KVR400X64C3A/512
> >
> > Any suggestions?
> >
> > Thanks!
>
> This is a problem with the BIOS and the "Platform Requirement Bit"
> inside the processor. There are two Vcore specs for Prescott, an
> 89W one and a 115W one. The BIOS is supposed to have knowledge of
> which Vcore circuit exists on its own motherboard. Some BIOS code
> is required to communicate which power supply the motherboard possesses
> to the processor. If the processor hears "the motherboard can handle
> 115W", the processor runs at normal speed (3.2GHz in this case).
> If the BIOS remains mute on the subject, like an older board might
> that had not been designed for 115W, the processor runs in "safe
> mode" at a 14X multiplier. 14x200=2.8GHz. All Prescotts with a 115W
> requirement will switch to 2.8GHz if not configured properly.
>
> Here is a mention of "Platform Requirement Bit". It is also documented
> in the Intel datasheet, but with insufficient details.
>
http://www.tomshardware.com/motherboard/20040810/intel_925_915-12.html
>
> This was fixed on the P4C800-E board in a BIOS dated Mar 4 of
> this year. There has been plenty of time to roll this into the
> P4R800-V. See item 4 in this entry for P4C800-E:
>
>
http://www.asus.com.tw/support/download/descript.aspx?l1_id=1&l2_id=15&l3_id=20&m_id=3&key_f_name=p4ced16.zip
>
> You have two solutions. Complain to Asus Tech support, and
> wait for the fix to be delivered. I'm willing to bet that a
> lot of the BIOS changes in this BIOS, come from ATI. You may
> have a long wait.
>
> The other option, knowing the processor runs to 3.2GHz, is to
> increase the CPU clock by 14%. If the CPU clock is 228MHz, the
> processor will be running at 3.2GHz, but the RAM will be
> running faster than it is suppose to. If the board has a ratio
> setting for the memory, then try changing the "DDR400" to
> "DDR333", and assuming these are ratio settings, the real
> memory speed will be (333/400)*228*2 = DDR380, and within
> the operating range of a PC3200 DIMM. You can run this way
> until whoever upgrades the BIOS figures it out.
>
> HTH,
> Paul
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