please Help Over Clock E8500 and Asus Rampage Extreme

[RSRAVI]

Hi First I like to say to hello to every one as you know am new to the site........

but have been reading allot on it .......

I am running these items below...

Asus Rampage Extreme Intel X48 (Socket 775) PCI-Express DDR3 Motherboard

Corsair 4GB DDR3 DHX 1333C9DHX Twin3X (2x2GB) (TW3X4G1333C9DHX)

Tested together at 1333MHz, Vdimm = 1.70V, at latency settings of 9-9-9-24
- SPD programmed at:JEDEC standard 9-9-9-24 values at 1333MHz

Intel Core 2 Duo E8500 LGA775 E0 steppping ……

Zalman CNPS9700-NT nVidia Tritium CPU Cooler

I have been trying to get this to over clock with the guides here ...
I got it to got to 4200 mzh with 70c load temp on prime95 ..

was 12hours prime stable...then i stopped it.......
has been working fine but then i started to get BSOD after using it for a fews hours ........

Done a memtest86 after 2 passes it would thro halt errors...
set it back to default ...re-tested the ram ...at

9-9-9-24 values at 1333MHz 1.7 volts ......runs fine 30 plus passes...no problems .......


Cpu when OC was running at 4180 Mhz 440FSB x9.5 Mutiply
any help or advice or bios settings would be great ...I have tried but just not there....

Oh had to up the v core a notch or two cant remember how much thou ..was not much thou

Just goes to show being prime95 stable does not make the pc stable.....

thanks for any help in advance ....

 

[dominick32]

If you are 100% confident it is the ram that is holding you back, try raising memory voltage to 2.0v, which is a very standard voltage for pushing lower rated ddr3 sticks higher than 1600 mhz on 775 configurations. If raising voltage does not work, try looser primary timings while at the same time using the lowest frequency divider selectable in bios.

Prime usually is a very good test to display system stability. What test did you do in prime? FPU testing, small ffts? or blend test? Because this way you can test specifically the ram or the cpu more heavily to find whats holding you back.

Regards,

 

[RSRAVI]

If you are 100% confident it is the ram that is holding you back, try raising memory voltage to 2.0v, which is a very standard voltage for pushing lower rated ddr3 sticks higher than 1600 mhz on 775 configurations. If raising voltage does not work, try looser primary timings while at the same time using the lowest frequency divider selectable in bios.

Prime usually is a very good test to display system stability. What test did you do in prime? FPU testing, small ffts? or blend test? Because this way you can test specifically the ram or the cpu more heavily to find whats holding you back.

Regards,

Hi i used prime95 v257 i used torture with blend tests......

WOW 2.0v on ram the reason i say ram as that is what fails the memtest

it passes with 9-9-9-24 at 1.7volts over 30 passes done on problems...

how do i loosen the timmings ...not sure what you mean

frequency divider selectable in bios what for cpu or ram....

cpu is 6
Ram is 1 or 2 or auto....

thanks

 

[RSRAVI]

Corsair 4GB DDR3 DHX 1333C9DHX Twin3X (2x2GB) (TW3X4G1333C9DHX)

Is my ram the bottleneck of the overclock...............

"""CPU to 440MHz, then your memory frequency is going to be up around 1760MHz and that is going to be too aggressive for this memory.
"""""""

 

[OnDborder]

Welcome to the Forum! http://www.ocforums.com/showthread.php?t=491697

What do you mean, "cpu is 6"?
What is your cpu voltage?
What psu are you running? And what are the rest of your components, please?
Can you give us a screenshot of cpu-z>cpu tab>memory tab? http://www.cpuid.com/cpuz.php

 

[RSRAVI]

Welcome to the Forum! http://www.ocforums.com/showthread.php?t=491697

What do you mean, "cpu is 6"?
What is your cpu voltage?
What psu are you running? And what are the rest of your components, please?
Can you give us a screenshot of cpu-z>cpu tab>memory tab? http://www.cpuid.com/cpuz.php

What do you mean, "cpu is 6"? Is the lowest cpu mutipler in the bios

the core voltage is 1.120v not OC

Intel Core 2 Duo E8500 LGA775 E0 steppping ……

Zalman CNPS9700-NT nVidia Tritium CPU Cooler

Zalman ZM600-HP Heatpipe Cooled 600W Modular PSU

Nivida 8800 GTX 768MB

in a Zalman GT1000 Z-Machine Case

will do screen shots soon not on that pc at the moment ....





Kind Regards,

2 sata hard drives and 2 sata dvd drives.........

 

[RSRAVI]

here is the cpu-z info running default at the moment no OC

 

[spidy]

someone just told me that the SPD programmings for the RAM only work on AMD systems/boards, is that true?

i'm also just starting to OC the exact same CPU, same family and everything. good luck!