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Q6600 Voltage questions (yes DELL and pic)

post #1 of 12
Thread Starter 
On my Dell XPS 630 BIOS --> Voltage page, these voltage settings are listed.

CPU Default Voltage (default: 1.3500) [Can't be changed in BIOS]
CPU Voltage (default: 1.325)
FSB Voltage (default: 1.20)
Memory Voltage (default: 1.85)
Chipset Voltage (default: 1.40)




Questions:

Is the 'CPU Default Voltage' just telling you the default voltage on the system? Or is it different than CPU voltage (VID) below it? (It's different from what I've read: 'VID is the set value of Volts that are fired into your CPU to get it started up')

For FSB Voltage I/O (VTT), what's a safe value for it (nForce 650i SLI)? I noticed the only way I could get past the BSOD on start up at 2.7Ghz (9 x 300) is by upping this to 1.25 (default is 1.20), but I havn't try changing the CPU default voltage yet (unchagable in BIOS).

For Chipset Voltage, what does it correspond to exactly (PCI-e, MCH, ICH, etc..) and what's the safe setting for it should I decide to tamper it (default = 1.4)? The info in the BIOS showed 'nForce SPP'.

Spec:

nForce 650i SLI MOBO (C55-MCP51)
C2Q Q6600 G0
2x 1gb PC6400 DDR2 800mhz @ 5-5-5-18
Geforce 8800 GTX
---
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post #2 of 12
The man couldn't have put it in better words

Quote:
Originally Posted by pauldovi View Post
The question is always asked: Can I overclock my Dell, HP, IBM, or Compact system? The short answer is always no.
*Edit*

I will however humor your questions as they are valid and deserve responces.

1. The default voltage is the voltage that the BIOS will run the CPU as a stock value.

2. 1.35 should be your max.

3. It is refering to your North Bridge. As far as Max safety settings on that board, I will leave that to someone who knows the NForce boards.
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post #3 of 12
Quote:
Originally Posted by Avacado View Post
The man couldn't have put it in better words
huh? you can clearly see he has the options to change stuff in the bios.

SPP is NB voltage
    
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post #4 of 12
Quote:
Originally Posted by microman View Post
huh? you can clearly see he has the options to change stuff in the bios.

SPP is NB voltage

Yes i'm not blind, I can see he has settings, but the only settings hes provided us with are Voltage settings, nothing more, I only see one picture, and though he may be able to change a few things, in general Propritary systems aren't made to O/C.
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post #5 of 12
Thread Starter 
Thanks for the quick response. I knew I should've said that the XPS 630 can be overclocked (although to an extent)

As far as I know, I can freely adjust the freq of fsb and mem + timing, but I don't have as many voltage options to play with.


Here's some more pics of the BIOS:









--

Here's CPUZ @ 2.7ghz pic. I ran Prime95 for 6 hours straight with no errors:



I've also gone up to 2.9ghz, but would get random BSOD, so I decided to clear up some voltage questions before I go any further.

More comments and pic requests are welcomed
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post #6 of 12
Quote:
Originally Posted by microman View Post
huh? you can clearly see he has the options to change stuff in the bios.

SPP is NB voltage
Errr. Last i know at least for the evga boards SPP is SB voltage... MCP is NB...
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post #7 of 12
wow, dell is unlocking the bios now?

edit: one thing, disable speedstep.
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post #8 of 12
Thread Starter 
Quote:
Originally Posted by gibsonnova74 View Post
wow, dell is unlocking the bios now?

edit: one thing, disable speedstep.
Yup, I did after I took the pics.

--

So, is the Chipset (SPP) = NB or SB Voltage? Also, recommendation for safe value for it would be great!
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post #9 of 12
SPP is NB and try and keep it under 1.6v or so although you shouldnt need that much
    
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post #10 of 12
i'm not sure about the (spp) i will have to do some research. but since your o/cing you need to download coretemp and give some temps. you will need to stress test your rig for stability. for this you download prime95 and run the small fft test. give us your idle temps, and your load (prime95 test) temps. that will give us an idea how far you can go.
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