E5300 Overclock Help

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Driftmonkey

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May 14, 2012
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So I got a free computer today, decided to have a little play. Specs aren't even fantastic as you can imagine.

Asus P5KPL-AM/ES Mobo
350W PSU
2GB 800mhz Ram
320gb HDD
Intel E5300 @ 3.15ghz (Stock cooler)

So now the question is, it's up to 3.15ghz from 2.60ghz factory. I've set all the voltages and things to auto, what else am I wanting to change other than the FSB to get it running stable at 3.2ghz?
 
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It could have been the Northbridge crapping out. Increasing the FSB can put a lot of strain on the NB chip, as well as the CPU. Can you adjust the NB voltage in the BIOS?

Ahhh, Northbridges, so glad we don't have to deal with them anymore :D

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gopher1369

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Go into the BIOS and turn off Spread Spectrum and EIST would be a good start. Both can interfere with overclocking. You may need to manually increase the voltage to your processor a bit. Warning: make sure you have good cooling. Stock voltage I believe is 1.25v but it should go to 1.35 volts without any trouble.

Luckily enough I was doing very similar recently, I had an E8400 (very similar processor) and I got it up to 3.6Ghz from 3.0Ghz without too much trouble, so I didn't have to think back 5 years, I did this just a couple of months ago :)

 
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stridervm

stridervm

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Sadly, I have that exact same board and similar processor before (E7200) . That motherboard doesn't have any settings to change the vCore of the processor. You'll be lucky to get an overclock beyond 3.3Ghz.

My only suggestion is to lower the Ratio/Multiplier while increasing the CPU FSB. You will need a high speed RAM that can take the punishment for this though.
 
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Driftmonkey

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The FSB is at 240 at the moment running stable(ish...), it started getting a bit glitchy at 244, assuming this is the voltages being wrong? Theres an option for the voltage to be set at 1.40v? I admit I'm not 100% sure what I'm doing here so I'm reading on it as we speak, a few have said 1.45v is the most they reccommend. Should I throw voltage to 1.40v and put the VCore overvoltage to any other options? Theres options for +50mv +100mv and +150mv
 
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gopher1369

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The stock voltage is 1.25v so +100mv would be 1.35volts which should be enough. 1.45 volts is within specification but will throw off an awful lot of heat, only set it that high if you have a serious heatsink and fan.

 
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Driftmonkey

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I hah, I see. Yeah, stock cooler so I won't be going any further than 3.2 (only want it for OCD sake, don't like uneven numbers lol).

So "MCH Chipset Voltage" doesn't need tinkering with, only VCore?

Appreciate the insight bud!
 
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Driftmonkey

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Nah, doesn't look like it's having any of this. 3.2ghz with 100mw overvolt is way too unstable, bluescreened instantly. Went to 50mw overvoltage and it can't even run many things without random stuff closing. Will just have to settle for 3ghz for now till I get a better cooler or upgrade. Just for educations sake, what would be causing it to bluescreen? It was idling @ 36deg celcius at 3200mhz

Dropped to 3ghz and ran prime95 and saw peak temp on cpu-id reach 77 and stopped it straight away. Will check what the thermal paste looks like, I'm expecting it to be disgusting and old and rock hard..?
 
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gopher1369

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It could have been the Northbridge crapping out. Increasing the FSB can put a lot of strain on the NB chip, as well as the CPU. Can you adjust the NB voltage in the BIOS?

Ahhh, Northbridges, so glad we don't have to deal with them anymore :D

 
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Solution
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Driftmonkey

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Set bus speed to 246 and manually set multiplier to x13 but its still dropping down to x6 when idle.. wtf? disabled speed step - disabled cpu tm function - disabled nearly everything that seems to step down the multiplier - still dropping to x6.. ?
 
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gopher1369

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Had a busy few weeks - bit late replying. And I have no idea. That sounds like Speedstep dropping the multiplier down to 6x, if you've turned off Speed Step....well, nope, no idea why it's still doing it, sorry.
 
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Driftmonkey

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Haha - that's fine bud! Found it was some other random option - C1E or something. Managed to get it to 3.7ghz stable with watercooling - mobo is holding it back - can't go past 292fsb. Ram also starts dying @ 3.8ghz. :/

Looking for a LGA1366 and i7 920 to upgrade to now - though - hopefully get some more overclock fun + performance out of my games with that!
 
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gopher1369

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Randomly rebooting? First 2 things I would check would be RAM and PSU, in my experience those are always the most likely culprits. But yeah, you're right, could be one of many things...

Nice PC though, if a little old, bet there wasn't anything that couldn't run.

 
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