Help! overclocking Q8400 asus p5Q-D

[jdfox]

Hey guys i could really do with some help getting my q8400 to 3.2ghz 8x400fsb. I am running a asus P5Q-D 4x1GB Kingston HyperX pc28500 and currently a Q8400 (had Q6600 but stopped working) I could reach 3.6ghz easily with the q6600 but i cant get anywhere near 3ghz now keep getting bsod. ive tried raising vcore to 1.3500 in 0.65 increments with no luck. i think it has something to do with the ram. I can get past 2 tests in prime95 using blend but thats it. If anyone has some experience with this board and processor i would appreciate some help just getting stable at 3-3.2ghz thanks.
jdfox

 

[formulav8]

You first need to lower the memory divider to completely take out that possible bottleneck. Also raise the chipset voltage if you can.

Just to let you know, I have a Q9450 and I can't get more than 3ghz stable because my Gigabyte P35 DS3 fsb won't be stable past a certain speed. Even with higher chipset voltage the board won't oc the chip much past 3ghz without an eventual bsod. (Thats about a 375 fsb clock or 1500mhz speed.) But you do need to try and take as many variables out of the equation like a low ram divider. Maybe lower the cpu multiplier and see how high the boards fsb can really go without the cpu clockspeed itself being a factor if nothing else works. Its all trial and error.

 

[tweakboy]

You can do 3000Mhz without touching the voltage.

To get to 3.2 all you need a tiny bump in voltage

gl

 

[jdfox]

You can do 3000Mhz without touching the voltage.

To get to 3.2 all you need a tiny bump in voltage

gl

Any help with that would be good.

 

[jdfox]

ive managed to get it stable now @3120mhz at 1.360 vcore any less would crash after 3 tests of blend prime95 but had to keep ram 1:1 ratio making it it 390mhz which is well under the specs for the ram is that ok? If i try set ram manually it just crashes so had to leave on auto. Everything else is on auto aswell

 

[tweakboy]

Good jdfox you reached a good OC ... What are your temps,, idle and load. thx

 

[tweakboy]

ive managed to get it stable now @3120mhz at 1.360 vcore any less would crash after 3 tests of blend prime95 but had to keep ram 1:1 ratio making it it 390mhz which is well under the specs for the ram is that ok? If i try set ram manually it just crashes so had to leave on auto. Everything else is on auto aswell

When you say 390Mhz do you mean 390 x 2 for 780Mhz ?

Also you said you kept your ram at 1:1 .. that is great!

ty

 

[jdfox]

Hey, yes the ram is 780mhz which kept it at 1:1 ratio temps are 29-32.c idol and max is 67.c under full load doing large fft's prime95 core 4 only other 3 are 55-59.c
I mainly use for gaming with 2 EAH5870's @x8x8 so normal temps when gaming are usually mid 40's. had blend running now 36 hours and all seems fine

 

[tweakboy]

Awesome very nice idle and load temps....

that is a good voltage. Possibly open a window open your case ,, and your temps will go down more.

 

[tweakboy]

Increase OC , 1 step at a time. Either do GPU first or CPU ,, you dont do them together or we wont know whats wrong if something went wrong.

Make shure your video card stock clocks

Your temps are cool, no worries.

Intel recommends 40's idle and 60 to 70's load.

gl

 

[MustangSVT]

I found out higher voltage for North bridge (MCH) helped alot.