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[P2B] dual celeron tualatin -- is it possible?
hello,
looking for the answer to that question I googled a little and saw some posts/pages which stated that "intel does not support dual celeron tualatin configuration" but they didn't state this configuration was impossible. however some other pages state that it is not possible. what is the truth? is is possible to run dual celeron tualatin on P2B-D motherboard as it is possible to run dual PIII tualatin with it? cheers, geos |
#2
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geos wrote:
hello, looking for the answer to that question I googled a little and saw some posts/pages which stated that "intel does not support dual celeron tualatin configuration" but they didn't state this configuration was impossible. however some other pages state that it is not possible. what is the truth? is is possible to run dual celeron tualatin on P2B-D motherboard as it is possible to run dual PIII tualatin with it? Impossible. intel does not connect the pins necessary for dual processing to the cpu die. Dual celerons only worked with mendocinos, neither coppermine nor tualatins will work. Oh and PIII tualatins are strictly uniprocessor too, you'd need PIII-S (the 512KB cache version) for dual. Roland |
#3
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"Leythos" wrote in message ... In article , says... hello, looking for the answer to that question I googled a little and saw some posts/pages which stated that "intel does not support dual celeron tualatin configuration" but they didn't state this configuration was impossible. however some other pages state that it is not possible. what is the truth? is is possible to run dual celeron tualatin on P2B-D motherboard as it is possible to run dual PIII tualatin with it? I have Dual P3/1Ghz running in a Compaq Server and it works fine. I also have Dual Celeron 500Mhz running on a BP6. It was my understanding that after the P3 is when things changed on Duals. Before the P4 if your board had Dual sockets, as long as it supported the CPU that you could run Duals - you might have to make sure they are the same STEP. Same stepping works better, but not always necessary. I bought a dual and found out later: System Information report written at: 10/29/2004 08:33:37 AM [System Summary] Item Value OS Name Microsoft Windows 2000 Server Version 5.0.2195 Service Pack 4 Build 2195 OS Manufacturer Microsoft Corporation System Name DARKSTAR System Manufacturer GBT___ System Model AWRDACPI System Type X86-based PC Processor x86 Family 6 Model 7 Stepping 2 GenuineIntel ~498 Mhz Processor x86 Family 6 Model 7 Stepping 3 GenuineIntel ~498 Mhz BIOS Version Award Modular BIOS v4.51PG Windows Directory C:\WINNT System Directory C:\WINNT\system32 Boot Device \Device\Harddisk0\Partition1 I get this error, but all seems to work otherwise: The CPUs in this multiprocessor system are not all the same revision level. To use all processors the operating system restricts itself to the features of the least capable processor in the system. Should problems occur with this system, contact the CPU manufacturer to see if this mix of processors is supported. |
#4
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Roland Scheidegger wrote: geos wrote: hello, looking for the answer to that question I googled a little and saw some posts/pages which stated that "intel does not support dual celeron tualatin configuration" but they didn't state this configuration was impossible. however some other pages state that it is not possible. what is the truth? is is possible to run dual celeron tualatin on P2B-D motherboard as it is possible to run dual PIII tualatin with it? Impossible. intel does not connect the pins necessary for dual processing to the cpu die. I've heard that, and even repeated it myself - but do we *know* that's the case? There are visible traces leading from both BR1# pins (x2 and n33) towards the core on a Tualatin Celeron... Dual celerons only worked with mendocinos, neither coppermine nor tualatins will work. Oh and PIII tualatins are strictly uniprocessor too, you'd need PIII-S (the 512KB cache version) for dual. Roland |
#5
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P2B wrote:
Impossible. intel does not connect the pins necessary for dual processing to the cpu die. I've heard that, and even repeated it myself - but do we *know* that's the case? There are visible traces leading from both BR1# pins (x2 and n33) towards the core on a Tualatin Celeron... It is possible intel disables this functionality the same way as they lock the multiplier - by burning on-die fuses. Nobody *knows* this (I'm sure some people at intel know it :-)) - but experiments showed the cpus simply do not work in a dual configuration (I'm pretty sure some people tried that, didn't you do that yourself? I've only got a lone single-cpu P2B...). And this sounds like the most probable reason. (though I'm not sure for tualatins, afaik coppermine celerons used the same die as coppermine PIII - but the tualatin PIII-S uses a different die (?) than tualatin PIII/celeron, so there would be certainly other ways do disable multiprocessing capabilities.) Roland |
#6
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thank you guys for all the answers
cheers, geos |
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