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Seeking advice on increasing OC results

post #1 of 9
Thread Starter 
Components:
I have a Smithfield core (D800 EE) CPU, P5WD2-Premium board, 2GB of Corsair RAM (DDR2-800), Ennermax Noisetaker 600W, Zalmann CNPS9500.

Current Status:
I have managed to overclock the CPU from 200MHz to 243MHz (800 FSB to 972 FSB). The efforts have produced a modest 21.50% improvement--not bad, but I want more. If I try to go to 244MHz or 245MHz, I am no longer able to shut down my machine normally. Beyond 245MHz, the operating system does not load. I have attempted to raise VCore up to 1.525 but it does not fix the stability problem.

Goal:
I want to overclock to 266MHz native (1064 FSB) and synchronize it with my memory (1064FSB and 1064MHz DRAM for a 1:2 end-state ratio). This translates to a 33% improvement over the 200MHz native chip frequency.

Any advice on how I can achieve this goal?
My System
(13 items)
 
  
CPUMotherboardOSMonitor
D840EE SmithField ASUS P5WD2 PREMIUM WI-FI Win XP Pro ViewSonic VX922 2MS 
PowerCase
Noisetaker 600W Kandalf VA9000SWA 
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My System
(13 items)
 
  
CPUMotherboardOSMonitor
D840EE SmithField ASUS P5WD2 PREMIUM WI-FI Win XP Pro ViewSonic VX922 2MS 
PowerCase
Noisetaker 600W Kandalf VA9000SWA 
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post #2 of 9
check your ram timings and make sure that you have the proper Vcore voltage
post #3 of 9
Quote:
Originally Posted by Hrodric

Goal:
I want to overclock to 266MHz native (1064 FSB) and synchronize it with my memory (1064FSB and 1064MHz DRAM for a 1:2 end-state ratio).
Wait, you are running your 800Mhz RAM at 1064? So you have OCed your RAM as well??

Just wanted to clarify......
post #4 of 9
Thread Starter 
Rabies229: Touche.

Thumper: Currently, my RAM is running at 800MHz (native at 400MHz). Since my CPU's native frequency is at 200MHz and Intel 'Quad-Pumps', my FSB is also 800MHz. So, right now the partition is 1:2 and they are nicely synchronized. My goal is to pump FSB and RAM to 1064MHz--I'm just not sure what other things I can do to achieve this.

Thanks for the quick reply, by the way.
My System
(13 items)
 
  
CPUMotherboardOSMonitor
D840EE SmithField ASUS P5WD2 PREMIUM WI-FI Win XP Pro ViewSonic VX922 2MS 
PowerCase
Noisetaker 600W Kandalf VA9000SWA 
  hide details  
Reply
My System
(13 items)
 
  
CPUMotherboardOSMonitor
D840EE SmithField ASUS P5WD2 PREMIUM WI-FI Win XP Pro ViewSonic VX922 2MS 
PowerCase
Noisetaker 600W Kandalf VA9000SWA 
  hide details  
Reply
post #5 of 9
Ok, cool, got what you're saying now


First thing to try is to set your FSB:RAM to a 1:1.

You were stable at 243 you said, so start there.

Take your FSB to 245 and set your ram to run at 490 (490/2=245). That should give you some stabibility. If it is stable at those settings, then you can go to 250 FSB and again, adjust your RAM up to match.

You can always run tests to see if your system is faster at the lower clock speed with faster RAM settings, or lower RAM settings and faster clock. It's your choice, depends on what you do with the system and what you want.
post #6 of 9
Thread Starter 
Thanks again for the reply, Thumper. FYI: I gave you "Rep Points" for being so helpful and responsive.

So, to throw an interesting monkey wrench: I remembered that I could play with the multiplier on my chip (I bought the Extreme Edition to fiddle with the system as much as possible). So, by increasing the VCore to 1.4 I was able to get a 4GHz frequency, while maintaining the FSB and RAM at 800MHz.

I pull up CPUz, but find that the actual frequency fluctuates quite a bit. Basically it hits a X14 effective multiplier all the way to the set X20 (normal is X16), which translates to approximately from 2.8GHz to 4.0GHz. I disabled the "CPU Lock Free" to prevent any frequencies lower than X16. Loaded CPUz again and, sure enough, I still hit X14 from time to time.

Very vexing.

I will take your advice in my experimentation. I did find that when I lowered the CPU frequency, but increased my RAM frequency to match the FSB, I got consistently higher FPS in games. However, looking over my motherboard's (ASUS P5WD2-PREMIUM) DRAM frequency options, I only have 400, 533, 667, 800, 711, 889, and 1067 available. Unless there is another lever that I'm supposed to fiddle with, the 490 may not be available to me. Am I missing something with DRAM manipulation?

Thanks in advance for your help.
My System
(13 items)
 
  
CPUMotherboardOSMonitor
D840EE SmithField ASUS P5WD2 PREMIUM WI-FI Win XP Pro ViewSonic VX922 2MS 
PowerCase
Noisetaker 600W Kandalf VA9000SWA 
  hide details  
Reply
My System
(13 items)
 
  
CPUMotherboardOSMonitor
D840EE SmithField ASUS P5WD2 PREMIUM WI-FI Win XP Pro ViewSonic VX922 2MS 
PowerCase
Noisetaker 600W Kandalf VA9000SWA 
  hide details  
Reply
post #7 of 9
First off, don't set your memory 1:1, that defeates the purpose of DDR2. 1:1 works best with s478 processors, but DDR2 is a whole new league.

If I were you, I would dump down the multi to 15x, and then raise up the bus speed. That will give you the best performance. Setting a high multi to reach high clock speeds taks away from your bus speed which might kill your preformance. For example, If you dump the multi to 15 and run the processor 15 x 250 = 3.75GHz it will be faster than a processor running 20 x 200 = 4GHz. Since your stable at 243, set your multi at 15x, that gives you 3.65GHz, not bad, but I'm sure you can do better.

In your bios, set your DRAM to 889 and loosen up your memory timings, this will give your memory an extra boost
    
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CPUMotherboardGraphicsRAM
T2500 Core Duo Dell Laptop Quadro 1500m flashed--> 7900GTX 2x1GB G.Skill DDR2-800 
Hard DriveOptical DriveOSMonitor
200GB SATA 5400RPM 8x DVD±RW Burner XP Home SP2 17" LCD (1920x1200) + 20.1" Samsung Widescreen 
KeyboardPowerCaseMouse
GE Keyboard 9 Cell Battery E1705 Frame Razer Diamondback 
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post #8 of 9
Thread Starter 
Ever since I found this site, I've been introduced to a WHOLE new world in PC modding. Although my overclocking education has just begun, thus far I have found it very addictive. If some people are allowed to obsess over their cars or gardens--why not obsess about one of the greatest human inventions: the PC?

But I digress....

Would you to provide me with a bit more detail regarding the "loosening" of the memory? I am not very familiar with that process.
My System
(13 items)
 
  
CPUMotherboardOSMonitor
D840EE SmithField ASUS P5WD2 PREMIUM WI-FI Win XP Pro ViewSonic VX922 2MS 
PowerCase
Noisetaker 600W Kandalf VA9000SWA 
  hide details  
Reply
My System
(13 items)
 
  
CPUMotherboardOSMonitor
D840EE SmithField ASUS P5WD2 PREMIUM WI-FI Win XP Pro ViewSonic VX922 2MS 
PowerCase
Noisetaker 600W Kandalf VA9000SWA 
  hide details  
Reply
post #9 of 9
Oh, sorry, what I ment by loosening the timings is making the #'s higer. It realaxes the timings of the memory. The extra bus speed will make up for the bigger #'s
    
CPUMotherboardGraphicsRAM
T2500 Core Duo Dell Laptop Quadro 1500m flashed--> 7900GTX 2x1GB G.Skill DDR2-800 
Hard DriveOptical DriveOSMonitor
200GB SATA 5400RPM 8x DVD±RW Burner XP Home SP2 17" LCD (1920x1200) + 20.1" Samsung Widescreen 
KeyboardPowerCaseMouse
GE Keyboard 9 Cell Battery E1705 Frame Razer Diamondback 
Mouse Pad
Icemat 
  hide details  
Reply
    
CPUMotherboardGraphicsRAM
T2500 Core Duo Dell Laptop Quadro 1500m flashed--> 7900GTX 2x1GB G.Skill DDR2-800 
Hard DriveOptical DriveOSMonitor
200GB SATA 5400RPM 8x DVD±RW Burner XP Home SP2 17" LCD (1920x1200) + 20.1" Samsung Widescreen 
KeyboardPowerCaseMouse
GE Keyboard 9 Cell Battery E1705 Frame Razer Diamondback 
Mouse Pad
Icemat 
  hide details  
Reply
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