overclocking help for e7300

Costom / Costom
January 2, 2009 at 08:26:48
Specs: xp pro, e7300 2gig
i'm going to oc my system i just built. the prob is i only have an antec 430watt psu. what should i set my stuff to for decent performance. i'm planning to replace cpu in 2 or 3 years if that makes any difference... i know a bit about computers, but just delved into bios for first time.

core 2 duo e7300 2.6gh
2g ram (built to oc to 1000)
asus p5q se plus mobo
gt9600 512m (ddr3)

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January 2, 2009 at 08:54:18
When overclocking an Intel system, there are two important things to keep in mind:

1. the faster the FSB, the better the performance
2. always run the CPU & RAM in sync (1:1 ratio)

You don't mention what speed RAM you have but regardless, with the CPU at it's default settings (10 x 266MHz), the RAM should be set to run as DDR2-533. Your board is capable of 1600MHz FSB so I suggest you take advantage of it. Start off conservatively...clock the CPU at 7.5 x 400MHz (3.0GHz) with the RAM in sync as DDR2-800.

Are you experienced at overclocking? I'm downloading the manual for your board right now & will post back with some recommendations.

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January 2, 2009 at 09:08:41
sorry, the ram is basic 800 stuff advertised to run at 1000. all i know about over clocking is what the mobo manual said (read cover to cover) and a little bit of tinkering in the bios, but not much.

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January 2, 2009 at 09:16:30
OK, try these:

AI overclock tuner = manual
CPU ratio = 7.5x
FSB frequency = FSB 1600 / 400MHz
PCIE frequency = 100MHz
DRAM frequency = DDR533 / 266MHz <-- I'm unsure about this one. Go with this setting at 1st, then check your settings after booting into windows using CPUZ.


Just download, unzip, then click on CPUZ.exe...click the memory tab & see what the FSB:DRAM ratio is. If it's not 1:1, it will probably be 3:2. If that's the case, go back into the BIOS & change the DRAM frequency to DDR800 / 400MHz. If you wanna check it before overclocking, the ratio will probably be 2:3.

CPU Spread Spectrum = disabled
PCIE Spread Spectrum = disabled

CPU ratio = 7.5x
Intel SpeedStep = disabled

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Related Solutions

January 2, 2009 at 10:22:00
i followed all that you said master. (insert bow) j/k the ratio is 1:1, with the ram at 400mhz. think it would be alright if i sped up my ram to 1000 or so? if not why? (settings?) would it hurt to speed the cpu up to 3.2? (settings?) is there a desired ratio between the ram and cpu (and or other components)?
thank you so much!

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January 2, 2009 at 10:46:26
The desired ratio is 1:1 (see response number 1) so leave it at 400Mhz to match the 400Mhz fsb.


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January 2, 2009 at 11:36:44
is there a desired ratio that you could apply for the general components one desires to oc?
like cpu:fsb:ram:pcie ? or something like that? sorry, i don't mean to heckle you for answers.

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January 2, 2009 at 12:14:45
Intel systems (except the P4 & it's derivatives) should be run with the FSB:DRAM at 1:1. The P4 was an inefficient design & performs better with the RAM running slightly faster...usually 4:5 or 5:6.

Early AMD systems performed best at 1:1. AMD systems since the 1st A64 don't have a FSB so there's no ratio to recommend. Generally, you just run the RAM as fast as possible.

There are a few constants for both systems. It's best to lock the PCI, AGP or PCI-e buses at their defaults:

PCI = 33.33MHz
AGP = 66.66MHz
PCI-e = 100MHz

One thing I'd like to add is that some sites/forums refer to the ideal ratio as 2:1. That's correct as long as you understand that they're using the data rate numbers rather than the actual frequencies. For example, your CPU is running at 1600MHz QDR FSB & your RAM is running at 800MHz DDR so that would put the ratio at 1600:800, or 2:1. Technically though, the ratio should be calculated using the frequencies, just as CPUZ shows it. Your's is 400:400, or 1:1.

"would it hurt to speed the cpu up to 3.2?"

All you can do is try. Just raise the multiplier from 7.5x to 8.0x & see what happens. You *may* have to increase the CPU voltage though. Do you know how to recover if the system becomes unbootable?

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January 2, 2009 at 12:58:15
uhm, no. apparently my mobo has a "crashfree bios" deal. it says a flashdrive may be used, but it must be smaller that 8gs. well, mine's 8; can i put my current bios on a cd instead as long as i set my dvd drive to boot before my hdd? so two things 1) recover bios 2) can i put my current bios on a cd

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