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Hello!
The Intel 875P chipset does not support DDR200 (PC1600) officially. However, DFI, MSI, Shuttle etc. created motherboards which support these speeds. Is there any way to force an Asus board to start at 400 MHz FSB and DDR200 (instead of DDR266) speed?
The problem is the following: I have an Asus PCH-DL and an NCCH-DL board. I would like to use two SL79V monsters in them because of the impressive 4 MB L3 cache. Unfortunately, the CPU's originally use 400 MHz FSB and consequently the boards start the memory at DDR266 speed. Since the boards initialize the CPU's at their original 30x multiplier, there is no way to start them at 533 MHz FSB and DDR266, even if I reduce the multiplier in the BIOS (since the reduced multiplier is set after the CPU's were initialized...).
I can set the FSB with SetFSB, Clockgen, etc., however, the 3:4 ratio of FSB:RAM prohibits the reach of 800 MHz FSB, because the memory controller of the i875P northbridge overheats when memory clock exceeds DDR400, and 2 CPU's, as well as both memory channels are in use.
The BIOSes of both boards (can be found here, Award BIOSes) contain 3 hidden memory speeds. One of them has the length of 6 characters (like DDR266, DDR333, DDR400), so I think it could be some kind of experimental or unofficial setting. Do you think that it could be DDR200? Does someone have any experienses?
Thanks for the help in advance.
Best regards,
Dani
P.s.: Though in some cases a pair of 3600 MHz Irwindales would perform some percent better than the SL79V's at ~3300 MHz, however, they would consume much more power which I do not prefer.
The Intel 875P chipset does not support DDR200 (PC1600) officially. However, DFI, MSI, Shuttle etc. created motherboards which support these speeds. Is there any way to force an Asus board to start at 400 MHz FSB and DDR200 (instead of DDR266) speed?
The problem is the following: I have an Asus PCH-DL and an NCCH-DL board. I would like to use two SL79V monsters in them because of the impressive 4 MB L3 cache. Unfortunately, the CPU's originally use 400 MHz FSB and consequently the boards start the memory at DDR266 speed. Since the boards initialize the CPU's at their original 30x multiplier, there is no way to start them at 533 MHz FSB and DDR266, even if I reduce the multiplier in the BIOS (since the reduced multiplier is set after the CPU's were initialized...).
I can set the FSB with SetFSB, Clockgen, etc., however, the 3:4 ratio of FSB:RAM prohibits the reach of 800 MHz FSB, because the memory controller of the i875P northbridge overheats when memory clock exceeds DDR400, and 2 CPU's, as well as both memory channels are in use.
The BIOSes of both boards (can be found here, Award BIOSes) contain 3 hidden memory speeds. One of them has the length of 6 characters (like DDR266, DDR333, DDR400), so I think it could be some kind of experimental or unofficial setting. Do you think that it could be DDR200? Does someone have any experienses?
Thanks for the help in advance.
Best regards,
Dani
P.s.: Though in some cases a pair of 3600 MHz Irwindales would perform some percent better than the SL79V's at ~3300 MHz, however, they would consume much more power which I do not prefer.
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