Help with First OC

S

Stallion

n00b
Joined
Oct 23, 2006
Messages
11
Here's what I have and where I am at...

Asus P5W DH Deluxe
Corsair XMS2 2x1GB DDR2 800 (PC2 6400)
Intel Core 2 Due E6600
X1950XTX 512MB
Thermalright XP90 (AS5)
650 Watt BFG PSU

Locked PCIe = 100mhz
Locked PCI = 33.33mhz
RAM 1:1 @ mfg recommended 1.9v
Bus speed = 335.4 MHz x 9.0 multiplier = 3018.5MHz
Core Temp Idle @ 35-40 deg c
Core Temp Load (Dual Prime 95 or Orthos) @ 50-55 deg c
AI Booster Idle @25 deg c
Vcore = 1.30v

Any higher bus speeds cause orthos failure. Temps never get higher than 55 deg c. Any suggestions to get more out of this cpu?

Thanks in advance...

Stallion
 
Increase the Ram voltage by 1 step.

Loosen the ram timings by 1 on each...

Increase the CPU vcore.
 
Thanks for the input guys...

Whiskey29, the Vcore has not been changed in the bios (set to Auto)

Stallion
 
Arcygenical,

My RAM is rated for 5-5-5-12. In CPUz it states:

Cas#latency = 5
Ras# to Cas# Delay = 6
Ras# Precharge = 6
Cycle Time (tras) = 18
Bank Cycle Time (trc) = 24

Sorry for the noob question, but which settings should I lower by 1?

By the way, thanks for your "The Penultimate new User Guide to Overclocking the Conroe" guide. It has really help to at least get me started. As you can tell, I am just a bit confused about the RAM timing recommendations.

Thanks for your help,
Stallion
 
In CPUz, what does it say your RAM is currently running at... The frequency option... Should be in mhz :).


What do you have your DRAM frequency Divider set to in the BIOS? Or is it on auto?

You usually have the option of changing it between 533 and 1066mhz or something. Changing it to 533 will slow down your RAM a little, making overclocks easier.
 
In cpuz, the "memory" tab has 345.5MHz (1:1). The "SPD" tab shows two tables. The first states only 270MHz (4-4-4-13) while the second states 400MHz (5-5-5-18).

Without changing any RAM timings I bumped the memory voltage from 1.9v to 1.95v and was able to run Orthos longer without errors (about 15 minutes) before I stopped it. I had to be away from the PC for a bit.

Ooops, your 2nd question. The DRAM freq in bios is now set to DDR2-690MHz, which matches with my now 345 "cpu frequency" in bios.

Thanks,
Stallion
 
id keep bumping up the voltage on the ram. can you link us to your particular set of sticks?
 
Orthos did fail again after about 15 minutes at 345MHz FSB (w/ 1.95v for RAM).

I dropped ram voltage back to 1.9v and bus speed to 335MHz. I already ran Orthos for 12 hours with no errors, but 2 sessions of Superpi 32m fail.... I get a "Not convergent in sqr05" error.
 
After dropping ram voltage back to 1.9v and FSB to 333, was stable again.

Bumped up cpu voltage by .05v to 1.35v and went back to 345Mhz FSB. Orthos ran stable for about 1 hour and will run overnight. So far so good.

Stallion
 
This has been a great learning experience... thanks to all your help and expertise. Here's where I am at...

3244MHz
360.47 Bus x 9
bios set 1.4v vcore
SPD still enabled (1:1; running at 360.5MHz; Cas#Latency = 5; Ras#toCas#Delay 6; Ras# Precharge 6; Cycle time (tras) 18; Bank cycle time (trc) 24)
Orthos stable 8-12 hours
idel temps 37-42C
load temps 55-56C

How much more can/should I get out of this chip? Should I continue to bump up vcore? Thoughts?

Thanks,
Stallion
 
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