325 fsb on Asus P4C800!!!
- Thread starter Thor86
- Start date
Just ran it through the AltaVista translator:
Since our i875P-Canterwood-Review of Monday letzer week reach us many letters by email and also some forum contributions, where for the Overclocking possibilities of the new chip set ask user. Mainly with around the possibility, 533 are a MHz processor on 800 MHz to over clocks - there this however within the specifications of the chip set lies, can quite confirm one the possibility - here is the limit rather because of the processor.
Many questions are occupied however with the over clock barness of 800 MHz processors. This new CPUs finally already possesses an extremely high front Side bus - with a firm multiplicator therefore naturally a Overclocking over FSB is to be classified riskily. Encouraged of our reports of new of the Soltek Springdale Mainboard with 1200 MHz come then however the dreams to perhaps lure a Pentium 4 on this frequency.
We have therefore a Canterwood Mainboard - which ASUS P4C800 Deluxe - for a test with 800 MHz a processor equipped and this over-clocks, in order to test, which FSB is reached. Came out the following results:
A bus clock of 325 MHz results due to the QDR bus of the Pentium 4 into an effective front Side bus of nevertheless 1300 MHz - that is even still more, than Soltek in the proud press release communicates. Of course this frequency no more cannot be driven with a synchronous storing act - with 1300 MHz DDR650 would be necessary. We had the storing act two times to therefore lower - altogether here the Setting "DDR266" is used, we operates the memory thus with a 2/3-Teiler. Effectively this results in a frequency of 216.66 MHz, which corresponds to DDR433.
It can be doubted also here whether the Canterwood limits the system - dual DDR433 is already for a system a challenge. With better memory - we used Corsair XMS3200LL-Speichermodule - can be reached here possibly also still more, because a 1/2-divisor for the RAM does not possess the Canterwood unfortunately.
Who wants thus with the i875P-Chipsatz over clocks, the following should consider:
With our short test we knew the chip set around 62,5% over clocks. That is for most Pentium 4-Prozessoren somewhat much - even with very high tension and good cooling one will not be able a 3.0C-Prozessor on the resulting 4.875 Ghz over clocks. A over clocking within this range appears thus as improbable - even if one reaches outstanding 4 Ghz, must the Canterwood only around 33% be over-clocked - in this case is thus enough a FSB of 266 MHz and/or. 1066 MHz perfectly out.
The large problem with over clocks with the i875P is the memory interface. DDR400 is actually already synchronous at the limit, would like one the memory interface clocks, then one will be already quite fast at the end, even if DDR466 or similarly luxurioeser memory is used. One over-clocks asynchronously, then high bus clocks can be quite reached.
About own experience reports we are pleased naturally in the forum.
Since our i875P-Canterwood-Review of Monday letzer week reach us many letters by email and also some forum contributions, where for the Overclocking possibilities of the new chip set ask user. Mainly with around the possibility, 533 are a MHz processor on 800 MHz to over clocks - there this however within the specifications of the chip set lies, can quite confirm one the possibility - here is the limit rather because of the processor.
Many questions are occupied however with the over clock barness of 800 MHz processors. This new CPUs finally already possesses an extremely high front Side bus - with a firm multiplicator therefore naturally a Overclocking over FSB is to be classified riskily. Encouraged of our reports of new of the Soltek Springdale Mainboard with 1200 MHz come then however the dreams to perhaps lure a Pentium 4 on this frequency.
We have therefore a Canterwood Mainboard - which ASUS P4C800 Deluxe - for a test with 800 MHz a processor equipped and this over-clocks, in order to test, which FSB is reached. Came out the following results:
A bus clock of 325 MHz results due to the QDR bus of the Pentium 4 into an effective front Side bus of nevertheless 1300 MHz - that is even still more, than Soltek in the proud press release communicates. Of course this frequency no more cannot be driven with a synchronous storing act - with 1300 MHz DDR650 would be necessary. We had the storing act two times to therefore lower - altogether here the Setting "DDR266" is used, we operates the memory thus with a 2/3-Teiler. Effectively this results in a frequency of 216.66 MHz, which corresponds to DDR433.
It can be doubted also here whether the Canterwood limits the system - dual DDR433 is already for a system a challenge. With better memory - we used Corsair XMS3200LL-Speichermodule - can be reached here possibly also still more, because a 1/2-divisor for the RAM does not possess the Canterwood unfortunately.
Who wants thus with the i875P-Chipsatz over clocks, the following should consider:
With our short test we knew the chip set around 62,5% over clocks. That is for most Pentium 4-Prozessoren somewhat much - even with very high tension and good cooling one will not be able a 3.0C-Prozessor on the resulting 4.875 Ghz over clocks. A over clocking within this range appears thus as improbable - even if one reaches outstanding 4 Ghz, must the Canterwood only around 33% be over-clocked - in this case is thus enough a FSB of 266 MHz and/or. 1066 MHz perfectly out.
The large problem with over clocks with the i875P is the memory interface. DDR400 is actually already synchronous at the limit, would like one the memory interface clocks, then one will be already quite fast at the end, even if DDR466 or similarly luxurioeser memory is used. One over-clocks asynchronously, then high bus clocks can be quite reached.
About own experience reports we are pleased naturally in the forum.
Crudely translated:
Since our Canterwood review on monday last week, we have received many emails and posts on the forum about the overclocking possibilites of this new chipset. Mainly, the 533Mhz FSB Chip is limited on the 800Mhz FSB. Many questions were also about the overlocking possiblilty of the new 800Mhz processors. These new CPUS posess an extremely high front side bus - with a fixed multiplier therefore overclocking the FSB is risky. Encouraged from news of the Soltek Springdale Motherboard with 1200Mhz, we began to dream that perhaps we could get a P4 that high. Therefore, we have a Canterwood Motherboard, P4C800 Deluxe - to test an 800Mhz P4, in order to see how high we can get the FSB. Here are the following results.
A bus clock of 325Mhz results in an effective FSB of 1300 due to the QDR bus. This is even more than indicated in the Soltek press release. Of course this frequency cannot me used synchronously since DDR650 would be neccessary. We had to change the DDR setting to what DDR266 would be if the FSB was lower, but since it is so high, it turns out to be DDR433.
We arent sure whether the Canterwood is the limiting factor, it may be the RAM. We uses Corsair XMS3200. Unfortunately the Canterwood doesn't have a 1/2 divisor for the RAM. We knew that with the settings the chip would be would 62.5% overclocked, and that is for most P4 processors too much. Even with very good cooling, a 3.0C cant get to 4.875Ghz. Overlocking in this range seems impossible. The biggest problem with overlocking on the 875P is the FSB interface. DDR400 is atually already synchronous at the limit, we would like better memory interface clocks, however, even if DDR466 is uses it will still have to be asynchronously overclocked. We are naturally very happy that we reached this high overclock.
Something like that, sorry if it sucks.
Since our Canterwood review on monday last week, we have received many emails and posts on the forum about the overclocking possibilites of this new chipset. Mainly, the 533Mhz FSB Chip is limited on the 800Mhz FSB. Many questions were also about the overlocking possiblilty of the new 800Mhz processors. These new CPUS posess an extremely high front side bus - with a fixed multiplier therefore overclocking the FSB is risky. Encouraged from news of the Soltek Springdale Motherboard with 1200Mhz, we began to dream that perhaps we could get a P4 that high. Therefore, we have a Canterwood Motherboard, P4C800 Deluxe - to test an 800Mhz P4, in order to see how high we can get the FSB. Here are the following results.
A bus clock of 325Mhz results in an effective FSB of 1300 due to the QDR bus. This is even more than indicated in the Soltek press release. Of course this frequency cannot me used synchronously since DDR650 would be neccessary. We had to change the DDR setting to what DDR266 would be if the FSB was lower, but since it is so high, it turns out to be DDR433.
We arent sure whether the Canterwood is the limiting factor, it may be the RAM. We uses Corsair XMS3200. Unfortunately the Canterwood doesn't have a 1/2 divisor for the RAM. We knew that with the settings the chip would be would 62.5% overclocked, and that is for most P4 processors too much. Even with very good cooling, a 3.0C cant get to 4.875Ghz. Overlocking in this range seems impossible. The biggest problem with overlocking on the 875P is the FSB interface. DDR400 is atually already synchronous at the limit, we would like better memory interface clocks, however, even if DDR466 is uses it will still have to be asynchronously overclocked. We are naturally very happy that we reached this high overclock.
Something like that, sorry if it sucks.
Oh and I registered on the forums over there, and sent the admin an email. Gonna ask him some questions.
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