i have a p5n-d mother board with a intel quad core q8400. im running dual 9800 gt video cards in sli. with windows 7 operating system. i have read that my cpu can be overclocked to 3.8 ish. im new to OC but am pretty computer savie. should i be changing just the fsb and ram freq and leave the voltages on auto. where would a good voltage values are safe to start with.
help with overclocking intel core 2 quad q8400
coldsore666
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i have a p5n-d mother board with a intel quad core q8400. im running dual 9800 gt video cards in sli. with windows 7 operating system. i have read that my cpu can be overclocked to 3.8 ish. im new to OC but am pretty computer savie. should i be changing just the fsb and ram freq and leave the voltages on auto. where would a good voltage values are safe to start with.
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this is somthing i help someone a few weeks ago with. i updated just now hope it helps
overclocking do not use ntune or any other windows baste overclocking programms for overclocking the chip use the bios
the first fing to do is put everything back to stock settings in the bios then download a few benchmark programms like cpuz speedfan orthose and intel benchmark utility onc thougs have com down do a benchmark off your system and save the results
once that is done start overclocking your system by adjusting the fsb settings do not be tempted to reach 4g on first go
adjust by about 100mhz at a time and boot each adjustment once you blue screen go back about 50mhz and try again and then do each adjustment at 5 or 10 mhz intervals untile it blue screens again then when you have found out where it starts blue screening go back 1 or 2 settings
now you can start adjusting the voltages but only do small ajustments with the voltages when it no longer boots decres the volts you will then now how far you can overvolt it now you can start overclocking again until it reaches its limits but also keep an eye on thoughs temps if temps are getting to high decreas the overclock or voltage
iv noticed wth speedfan it says the temp off your motherboard well that normally means the temp off yor northbridge that can get higher than the cpu so you might need extra cooling for that as well
befor you start overclocking go into bios and set the pci express setting to 100 if you leava it on auto you will be overclocking that as well and it isnt advised
unlink the ramm setting set your vcor setting to 1.2v or slightly higher you could set it up to 1.36 but you will have too high a tempretur at that setting unless you have very good cooling ie top off the range air cooling or watercooling
i find intel burn test is the best for testing your overclock ive used various overclocking utils in the past and found my overclock pass them but i used burn test and it failed so i mainly use intel burn test for overclocking the chip speedfan is good for tempretures as well as monitoring voltages
overclocking do not use ntune or any other windows baste overclocking programms for overclocking the chip use the bios
the first fing to do is put everything back to stock settings in the bios then download a few benchmark programms like cpuz speedfan orthose and intel benchmark utility onc thougs have com down do a benchmark off your system and save the results
once that is done start overclocking your system by adjusting the fsb settings do not be tempted to reach 4g on first go
adjust by about 100mhz at a time and boot each adjustment once you blue screen go back about 50mhz and try again and then do each adjustment at 5 or 10 mhz intervals untile it blue screens again then when you have found out where it starts blue screening go back 1 or 2 settings
now you can start adjusting the voltages but only do small ajustments with the voltages when it no longer boots decres the volts you will then now how far you can overvolt it now you can start overclocking again until it reaches its limits but also keep an eye on thoughs temps if temps are getting to high decreas the overclock or voltage
iv noticed wth speedfan it says the temp off your motherboard well that normally means the temp off yor northbridge that can get higher than the cpu so you might need extra cooling for that as well
befor you start overclocking go into bios and set the pci express setting to 100 if you leava it on auto you will be overclocking that as well and it isnt advised
unlink the ramm setting set your vcor setting to 1.2v or slightly higher you could set it up to 1.36 but you will have too high a tempretur at that setting unless you have very good cooling ie top off the range air cooling or watercooling
i find intel burn test is the best for testing your overclock ive used various overclocking utils in the past and found my overclock pass them but i used burn test and it failed so i mainly use intel burn test for overclocking the chip speedfan is good for tempretures as well as monitoring voltages
Quote:
3.8Ghz is not a realistically attainable speed with this CPU. It doesn't have the same capabilities as the q9xxx series does. IMO.
There are a few others here, (pancing is one of them,) that have managed to achieve 3.5Ghz overclocks on this chip. To get that speed though you also have to overclock your ram. You need to put your full system specs.
To repeat what Thanos said a key thing to remember is never raise your cpu's vore above 1.36v. You can do it, but you risk reducing the lifespan of your chip.
Now, my overclock is more conservative but here are the specs I used, since you have the same mobo.
CPU is at 3.3Ghz
Ram is at 825Mhz (Stock is 800)
My FSB is at 1650Mhz (412.51x8) Linked & Synced
Vcore is on Auto (CPU-Z reads it as 1.328v)
NB is at 1.44v (Won't go any lower without stability issues)
HT is at 1.44v (Same deal)
I use the linked and synced method but others use a RAM ratio of 1:1 and/or unlink it for a higher overclock.
This overclock is nice if you're planning on keeping the chip for a while, because you can leave C1 state on, allowing your chip to clock down when not under heavy use. Also, it's very good temperature wise because without extra voltage going to the cpu you keep your temps down.
Mine idles @ 35C with a max temp of 60C on prime 95 testing.
Originally Posted by coldsore666  i have a p5n-d mother board with a intel quad core q8400. im running dual 9800 gt video cards in sli. with windows 7 operating system. i have read that my cpu can be overclocked to 3.8 ish. im new to OC but am pretty computer savie. should i be changing just the fsb and ram freq and leave the voltages on auto. where would a good voltage values are safe to start with. |
There are a few others here, (pancing is one of them,) that have managed to achieve 3.5Ghz overclocks on this chip. To get that speed though you also have to overclock your ram. You need to put your full system specs.
To repeat what Thanos said a key thing to remember is never raise your cpu's vore above 1.36v. You can do it, but you risk reducing the lifespan of your chip.
Now, my overclock is more conservative but here are the specs I used, since you have the same mobo.
CPU is at 3.3Ghz
Ram is at 825Mhz (Stock is 800)
My FSB is at 1650Mhz (412.51x8) Linked & Synced
Vcore is on Auto (CPU-Z reads it as 1.328v)
NB is at 1.44v (Won't go any lower without stability issues)
HT is at 1.44v (Same deal)
I use the linked and synced method but others use a RAM ratio of 1:1 and/or unlink it for a higher overclock.
This overclock is nice if you're planning on keeping the chip for a while, because you can leave C1 state on, allowing your chip to clock down when not under heavy use. Also, it's very good temperature wise because without extra voltage going to the cpu you keep your temps down.
Mine idles @ 35C with a max temp of 60C on prime 95 testing.
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You're gonna have a hard time hitting 3.8 with that board
I've hit 3.73 on my board with my q8300 4 hours on prime.
With a good board and good ram you can hit 3.8 with that chip.
3.8 with a q8400 will be reaching the upper limits of most boards (475x8)
Good luck!
I've hit 3.73 on my board with my q8300 4 hours on prime.
With a good board and good ram you can hit 3.8 with that chip.
3.8 with a q8400 will be reaching the upper limits of most boards (475x8)
Good luck!
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