Archived from groups: alt.comp.hardware.overclocking (
More info?)
Phil Weldon wrote:
> It turns out that the Tyan Trinity S1854 motherboard has a Slot I socket AND
> a Socket 370 socket. It does not seem to have any way of changing the
> default CPU core voltage set by the CPU. I'd guess that the PCI and AGP bus
> frequencies will be correct even with a 133 MHz FrontSide Bus frequency.
> There are no settings for any FSB speeds other than 66 MHz, 100 MHz, and 133
> MHz. None of the available BIOS versions have any settings other than those
> three for the FSB, and there are no settings to override the default CPU
> core voltage on the motherboard or in any BIOS version.
>
> There is, however, a jumper on the motherboard that can be used to lower the
> memory clock speed by 33 MHz. The freeze when booting problem you get could
> be cause by memory that can't keep up with a 133 MHz clock rate, or by
> needing to use a higher CPU core voltage, or by both.
>
> You can download the Tyan Trinity S1854 motherboard (in English) from
>
http://www.tyan.com/support/html/manuals.html .
> Tyan tends to have very good manuals, but back in the days of the Tyan
> Trinity S1854 Tyan did not support overclocking.
>
> You have two choices for greater performance with that motherboard.
> #1. Obtain a 'Slotket', an adapter that allows a Socket 370 CPU to be used
> in a Slot I socket. The 'Slotket' will have jumpers between the CPU core
> voltage selection pins so that you can use a hire core voltage. This
> 'should' get your CPU operating with a 133 FSB. The 133 FSB can be selected
> with a jumper on the 'Slotket' or on the motherboard.
I would caution that he'd need to verify that any slotket he looking into
buying did, in fact, have Vcore jumpers because the Super Slotket II,
possibly under other names as well, does not and it's the most commonly
available 'new' slotket left on the market. That one would give him nothing
more than he's already got.
A third option is to wrap CPU pins for Vcore.
> #2. At this late date, it may be cheaper and easier to purchase a used,
> higher speed Pentium III than to find and purchase a 'Slotket'.
>
> For either choice, keep in mind that your memory sticks may not work at a
> higher FSB speed. The Tyan Trinity S1854 has a jumper to run memory
> asynchronously, at speed 33 MHz lower than the FSB (at some loss in
> performance.
>
> Phil Weldon
>
> "Nope" <SeLoMettoMiSpammano@tin.it> wrote in message
> news:6nB8e.1250662$35.45939726@news4.tin.it...
>
>>hi,
>>I've got a Pentium 3 Coppermine socket 370 600E (100 x 6.0) on a Tyan
>>Trinity 400 S1854 chipset Apollo pro 133A. Multipliers can be set up by
>>changing jumpers and the FSB can be changed via BIOS.....busses have
>>already a correct setting.....
>>FSB is the only bottle-neck.....
>>
>>But it seems to be completely locked!
>>
>>If I change FSB via BIOS PC even does not boot and the only way to make it
>>work again is to clear cmos.....and I hadn't tryed yet to change the
>>multiplier....
>>
>>I would like to change FSB and to reduce the multiplier in order to have a
>>more performant system running at 133x5 without stress it too much.....is
>>it possible?
>>
>>Is there any way to make it work?
>>
>>Thanks
>>
>>
>>
>
>
>
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