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OC E7300

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December 31, 2011 5:48:02 AM

OK so I got my Intel core2 duo E7300 2.66GHz OC'd to 3.0GHz by (10x300MHz) not really sure if i have a true OC because I tried going to 333Mhz and faild POST.
Memory is PC2-6400(800Mhz) 5-5-5-15 G.SKILL 2 sticks dual channel adding to 4gb.
board is gigabyte EP43-DS3L
PSU 500w antec
heat sync for cpu: blue orb2 (air cool, and its a big sucker!)

I really want to get to 3.3GHz! CPU-Z program is telling me my RAM is 2:3 @ 5-6-6-17 w/ DRAM frequency at 450MHz got it set to auto in bios, cuz failed to boot when I tried to set it 1:1.
Kinda stumped, any suggestions?

More about : e7300

a b K Overclocking
December 31, 2011 6:13:34 AM

1. try upping voltages if you can
2. make sure your not overclocking your ram too high coz that could be stopping it
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December 31, 2011 6:23:00 AM

well i got my ram on auto, and when i set it to manual, i set it to 5-5-5-15 no problem, then tried to twist in the 400mhz with the multiplier, and it failed to post.
I guess that's what I'm thinking my problem is? cpu-z is showing 2:3 ratio, where I'm guessing I need a 1:1 correct? I'm not sure what my settings should be once i take them off auto.

The recommended voltage for my cpu model is .8500v-1.3625v. got er on auto, and didn't post. should i try manually setting it at 1.3625v to see if it should be stable at 3.3ghz? (333x10)
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a b K Overclocking
December 31, 2011 6:30:39 AM

grr pentium D lol anyways

idk much about em, can you ajust the cpu multiplier? coz that would be easy... and if it dosent post at that, have you tried raising the DRAM voltage?

edit:lol, thought i saw the model as pentium D
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December 31, 2011 6:35:13 AM

meh im in college, i'm broke =P. cpu is locked. multiplier range is 6-10 that is adjustable. i just read somewhere if i set fsb to 400mhz and mltiplier at 8 (400x8) i should get at 1:1 ratio with ram at 400mhz. that would leave me with an OC of 3.2 and i'd be happy i guess.
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a b K Overclocking
December 31, 2011 6:37:15 AM

see if that works :p 
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December 31, 2011 6:38:07 AM

really, I intended to have this problem go away with tax return $$ and get a new mobo and i5, but I might actually stick with this setup since i'm runnin pretty smooth on Battlefield3. :D 
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a b K Overclocking
December 31, 2011 6:40:06 AM

yeah, most games are very gpu intensive, so you can be running an old socket 775 cpu and a shiny new gpu and be fine in pretty much every new game
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a c 197 K Overclocking
December 31, 2011 7:21:15 AM

Core2 CPU's in G'byte motherboards are simple to overclock. (Keep in mind that there is a difference between "simple" and "easy".

The E7200 series is just a slightly crippled E8200. It should be relatively easy to reach at least 3.6 GHz. I have an E7500 running at 4.1 GHz (24 hour Prime95 stable) in a G'byte P35.

Start here.
Shadow's Gigabyte motherboard OC guide:
http://www.tomshardware.co.uk/forum/page-245679_11_0.ht...
It's for an EP35-DS3L but all the Gigabyte Core2 BIOS's are similar.

Go through the guide. Then take your core voltage off Auto and set your memory voltage to factory recommended values. You can also go to 2.2 volts if you need to.

The main source of OC problems in Core2 systems is running the memory faster than you need. Change the System Memory Multiplier from AUTO to 2.00. Then when you increase the FSB, the memory clock will rise in in proportion with it. At an FSB of 266 MHz, your memory clock should be at 533 MHz. And CPU-Z will report a memory frequency of 266 MHz - exactly the same as the FSB freq for a 1:1 FSB:RAM ratio.

Don't bother trying to overclock the memory. You will gain little, if any, additional performance and the loss of stability in the memory may be critical.

To save time, I'd try to jump straight to a 300 MHz FSB. You might need to increase CPU voltage a little. Then I would try something around 330 MHz, then 360 MHz.

You need to keep your load temps under 70 C and your core voltage under 1.45 volts. With a dual core CPU and a decent HSF, you will probably reach voltage limits before you reach temperatuer limits.
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Best solution

a c 197 K Overclocking
December 31, 2011 7:23:31 AM

daviesm118 said:
CPU-Z program is telling me my RAM is 2:3 @ 5-6-6-17 w/ DRAM frequency at 450MHz got it set to auto in bios, cuz failed to boot when I tried to set it 1:1.

That means your DDR2-800 RAM is running at DDR2_900 speed.

Core2 CPU's in G'byte motherboards are simple to overclock. (Keep in mind that there is a difference between "simple" and "easy".

The E7200 series is just a slightly crippled E8200. It should be relatively easy to reach at least 3.6 GHz. I have an E7500 running at 4.1 GHz (24 hour Prime95 stable) in a G'byte P35.

Start here.
Shadow's Gigabyte motherboard OC guide:
http://www.tomshardware.co.uk/foru [...] _11_0.html
It's for an EP35-DS3L but all the Gigabyte Core2 BIOS's are similar.

Go through the guide. Then take your core voltage off Auto and set your memory voltage to factory recommended values. You can also go to 2.2 volts if you need to.

The main source of OC problems in Core2 systems is running the memory faster than you need. Change the System Memory Multiplier from AUTO to 2.00. Then when you increase the FSB, the memory clock will rise in in proportion with it. At an FSB of 266 MHz, your memory clock should be at 533 MHz. And CPU-Z will report a memory frequency of 266 MHz - exactly the same as the FSB freq for a 1:1 FSB:RAM ratio.

Don't bother trying to overclock the memory. You will gain little, if any, additional performance and the loss of stability in the memory may be critical.

To save time, I'd try to jump straight to a 300 MHz FSB. You might need to increase CPU voltage a little. Then I would try something around 330 MHz, then 360 MHz.

You need to keep your load temps under 70 C and your core voltage under 1.45 volts. With a dual core CPU and a decent HSF, you will probably reach voltage limits before you reach temperatuer limits.
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December 31, 2011 2:36:20 PM

lol got it to 1:1 and so far so good! I upped the zapps on the ram from 1.8-1.9v, and set the multiplier to 2.
went ahead and set the cpu to the factory recommended max, 1.3625v.
when i st my fsb speed at 400mhz and a 8x multiplier wham! 1:1! and you are right, this was fairly simple. especially for this being my first time doing an OC minus Easytune :) 
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December 31, 2011 2:39:43 PM

Best answer selected by Daviesm118.
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