Overclocking wall

[Gautama2]

Specs are in sig, cpu is at 1.45v and ram at 2.5v. CPU is not overheating. If I raise the fsb one mhz over 240x10 I can't post and all I get is the memory error beep. I of course first set the memory to 667 now, to get the speed of 799 if I remember correctly. Still nothing. I flashed the bios as well, still nothing.


OTHER INFO:
CPU- 30 idle, 39 load
Chipset- 55-60c.
Ram passed 14 hours of memtest with 0 errors.

 

[Shimmishim]

isn't 2.5 a bit high for ddr2?

try lowering your vdimm voltage to 2.1 or 2.2

 

[Gautama2]

Default is 2, shouldnt 2.5 be fine?

 

[Shimmishim]

i guess it should be okay but seems a bit high for 960 or 480.

try putting a fan over your mem modules

 

[Gautama2]

There is an outtake fan pulling directly from the sticks (DFI flip-flopped the usual processor and memory spot).

 

[bjp999]

I don't have that MB, but my experience is when its stable at one speed, and +1 FSB makes it not boot, it's a memory issue. Post your FSB, voltages, and memory timings. Some MBs do weird things with memory timings when you cross certain FSB levels. On my MB, setting memory settings to SPD gets past most issues. Keep trying the latest BIOS versions - ASUS has been working out these kind of kinks. Hopefully DFI is also.

Pushing voltage on DDR2 is iffy. Most have reported getting best OC results at stock voltage Some at +0.1, I don't think you are not helping yourself with +0.5v.
-------------------------------
ASUS P5W DH, BIOS 1503
E6600 @ 3.6 (400) @ 1.5625 (lapped)
2G GSKILL PC6400 (Manual Memory Timings @ 4/4/4/12)
Scythe Infinity (modded / lapped)
Sapphire 1900xtk (lapped)
SB Audigy 2
Custom Modded SuperMicro SC-160A Case (3x120mm in, 92mm&120mm out)

 

[Gautama2]

K, full specs are

240mhzx10
volts are 1.45cpu, 2.5vram (will lower this to 2.1 and see how that goes)
Timings, 5-5-5-12 2T (wont boot at 1T, even with everything stock).

I'll make changes and tweak again tomorrow, too late in the night now.

 

[cmrmrc]

try immediately jumping to something like 260mhz fsb to see if it helps....also try with the 9X multiplier to see if you pass 2.4ghz

 

[IEC]

Does your board have full locks?

 

[Gautama2]

I have both pci-e and pci locked.

 

[Gautama2]

Actually, I cant find the pci lock...

And I can go over 241 with a lower multiplier.

Current settings reported by bios:
CPU fsb ratio setting 10x
Cpu n NB bus ration 3x
Current cpu speed 2600mhz
CPU clock settings 260mhz
Dram speed ddr 667
Current dram speed ddr 865
Cpu n nb bus width 16 down 16 up
pci clock setting 100mhz
cpu volts 1.45
vram 2.1

and i get the memory beep.

I can boot to bios at
cpu fsb ratio x6
cpu n nb bus ration 3x
cpu speed 1920mhz
cpu clock 320mhz
dram speed ddr 800
current dram speed 768
with the same volts as above.
So mobo isnt the problem.
But if I change the dram speed setting to ddr 667 i get the beep.
So I think the issue is changing the dram speed setting.


And for some reason i can boot at 241x10 now. So Im thinking the issue is just changing the cpu-mem divider (which i believe in this board is controleld by changing the dram speed setting). Whats basically a dangerous speed to run this cheapo ddr2 800 at?

 

[Gautama2]

Anyone?

 

[Gautama2]

Anyone?

EDIT: Snap, double post >.<