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186
 
Group: Forum Members
Last Login: 22/11/2008 11:40:21
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| Hi, I need a little help on trying to get more performance and stability out of my E4400 and P5KC. Somebody told me that if i reduce the multiplier to 6 and increase fsb to 400 with the memory running a 1.1 ratio at 800 my pc should be faster than at 10x300. I tried this but after running orthos for an hour with no problems i rebooted the pc, but i got no post so i switched it off and on only to be given the message 'overclock failed, please press F1 to run setup'. Could anyone advise me on the fsb/multiplier setup for my pc and what voltages should i be running in either situation. Ive also been getting windows xp stuck at splash screen when its loading with any overclock. my bios is version 08.00.12
---------------------------------------------------------------------------------------------------------------------------- Asus p5KC- Q6600@3.2g - Gigabyte 8800gt 512mb - 2x 1 gig Corsair Xms2 6400@ 4,4,4,12 - Creative X-fi Extreme Music- ----------------------------------------------------------------------------------------------------------------------------
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Pentium
Group: Forum Members
Last Login: Yesterday @ 20:23:57
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You need to make sure that it's totally stable with the overclock in Windows first ideally, and I'd stick to the standard multiplier if I were you. The FSB of 400MHz is obviously causing a problem somewhere even with a multi of x6, so I'd avoid going that high personally. Maybe the mobo chipset is cooking and needs better cooling. I don't honestly think that a high FSB is going to help you much anyway.
The CPU is designed to run with a higher multiplier and the relatively slow FSB can still provide all the bandwidth an E4xxx needs to keep it 100% busy. The 2MB L2 cache is likely to become a problem long before FSB bandwidth limitations take effect. Not that the 2MB of cache is a serious problem either.
Use the proper CPU multiplier and try tightening your memory timings if you can. Running the RAM slower but on tighter timings will often pick up a measurable performance boost and tends to make a C2D very 'snappy' for its clock speed. You may need to raise Vcore a little above stock (to around 1.4 to 1.5Volts?) to get a really good overclock though. 
Cheers, Slipstreem. 
System specs: "Phoenix" - Intel C2D E4500 overclocked to 3GHz with ACF7Pro HSF on Volt-modded ASRock 775Dual-VSTA mobo (modded BIOS rev 3.10A and VNB=1.65, Vagp=1.8), 2x1GB Crucial Ballistix DDR2-800 RAM (3.0,3,3,8,1T @546MHz), Sapphire ATI HD3870 512MB GDDR4 PCIe graphics card overclocked to 850MHz GPU & 2.4GHz RAM. Powered by Hiper Type-M 580W PSU. Guess who likes overclocking on a budget. 
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186
Group: Forum Members
Last Login: 22/11/2008 11:40:21
Posts: 30,
Visits: 60
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| Hi, I kept the mulitplier at 10 like you suggested slippy and i raised the fsb to 266 with the voltage at 1.4. I then set the memory at 667 with timings of 3 3 3 8 , i dropped these down from 4 4 4 12, hope these look right. Ran orthos for 30 mins, no problems and both cores went to 60c with the cpu showing 38, are these ok? PC rebooted a few times and everything seems stable. Thanks slipstream
---------------------------------------------------------------------------------------------------------------------------- Asus p5KC- Q6600@3.2g - Gigabyte 8800gt 512mb - 2x 1 gig Corsair Xms2 6400@ 4,4,4,12 - Creative X-fi Extreme Music- ----------------------------------------------------------------------------------------------------------------------------
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Pentium
Group: Forum Members
Last Login: Yesterday @ 20:23:57
Posts: 8,036,
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