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P4 2.8 not running at full speed
Name: headbeast Date: February 10, 2005 at 04:44:06 Pacific OS: Win xp home CPU/Ram: P4 2.8ghz 512mb 333mhz dd
Comment:
Hi, i need help.I have just installed a p4 2.8ghz on a MSI 845PE Max2 motherboard and put win xp on. when i turn on and look in the system menu in xp it says that i have a 2.8 chip on board but it is only running at 1.6ghz! I have tried changing the fsb speed in the bios but won't change. I have looked on the motherboard and there are no jumpers to change either. Any ideas how to get it working at full,MSI just ignored me.
Name: Sabertooth Date: February 10, 2005 at 09:19:06 Pacific
Reply:
What do you have in the BIOS?...FSB/Multiplier
B4 you criticize a bigger man, walk a mile in his shoes. That way, you're a mile away, and you have his shoes.
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Response Number 2
Name: Cody (by kerodude3058) Date: February 10, 2005 at 11:35:30 Pacific
Reply:
r u sure ur mobo soports the 2.8 chip..if it does contact the cpu manufacturer. (is it intell?)
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Response Number 3
Name: jam Date: February 10, 2005 at 11:46:28 Pacific
Reply:
Are you sure it's running at 1.6GHz & not 1.86GHz?
It sounds like you have the 800FSB (200MHz x 4) version of the 1.8 which has a multiplier of 14x, but you're running it at 533FSB (133MHz x 4). So either you have to change the FSB in the BIOS, or your board only supports 533FSB.
14 x 133MHz = 1862MHz
Asus A7N8X-X 1800+ @ 8 x 210MHz 512MB PC3200 Asus Ti4200 128MB WinME/WinXP Pro
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Response Number 4
Name: lazyman Date: February 10, 2005 at 13:09:08 Pacific
Reply:
845PE does not support 800mhz P4 2.8.
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Response Number 5
Name: headbeast Date: February 10, 2005 at 13:49:17 Pacific
Reply:
The board says it should except a p4 2.8ghz.the chip is a 533fsb but when i run the fuzzy logic program it says 12 x 133(1596 mhz). i look in the bios,the fsb settings run from 133 mhz to 233 mhz. when u try to alter the settings to a higher mhz it does nothing.
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Response Number 6
Name: jam Date: February 10, 2005 at 15:36:14 Pacific
Reply:
If your multiplier is 12x, you have one of the following:
12 x 100 (400FSB) = 1200MHz
12 x 133 (533FSB) = 1600MHz
12 x 200 (800FSB) = 2400MHz
Since the multiplier is locked, it looks like you have a 2.4GHz/800FSB CPU, but since your board only supports 533FSB, it's running at 1.6GHz
Asus A7N8X-X 1800+ @ 8 x 210MHz 512MB PC3200 Asus Ti4200 128MB WinME/WinXP Pro
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Response Number 7
Name: Sabertooth Date: February 10, 2005 at 19:36:43 Pacific
Reply:
If your multiplier is 12x, where does 2.8Ghz come in, maybe you do not have a 2.8Ghz P4 afterall.
B4 you criticize a bigger man, walk a mile in his shoes. That way, you're a mile away, and you have his shoes.
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Response Number 8
Name: Cobra_R Date: February 10, 2005 at 20:54:40 Pacific
Reply:
I was thinking H/T enabled was causing it but 1.6 + 1.6 would end up being 3.2ghz.
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Response Number 9
Name: headbeast Date: February 11, 2005 at 01:39:53 Pacific
Reply:
I checked the Processor and it has 2.8 written on it and it also says 2.8 in the system menu on win xp. do you think there could be a problem with the motherboard?
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Response Number 10
Name: KiDD3 Date: February 19, 2005 at 19:19:39 Pacific
Reply:
Did you change your CPU clock switch?
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Response Number 11
Name: headbeast Date: February 27, 2005 at 04:31:38 Pacific
Reply:
I have checked the motherboard manual and there is no switch for the cpu speed. I think iam just gonna give up
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