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Overclocking CPU, Biostar TP43d2 A7

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Bluescreendeath   07-09-2009 at 06:51:36 AM

Hi there,
I'm currently OCing a E6300 with a Biostar TP43D2-A7 motherboard. The problem I've come across is I can't seem to set the cpu voltage. (after tweaking the items in BIOS)

I've gone to desktop and seen my multiplier and my voltage fluctuate. (E6300 stock volt is .8 to 1.3, my voltage fluctuates from 1.184 to 1.296)


Here are some of my BIOS options (copied from another user who had the same issue):


Ratio CMOS Settings
This item allows you to set the CPU ratio frequency


CPU Frequency Setting
This item allows you to select the CPU Frequency
Options Min=100MHz - Max=800MHz


Overclock Retry Count
This item allows you to set the overclock fail retry times.
Options: 3(Default /Min=1 - Max=8

Right now it's on default of 3.


FSB to NorthBridge Latch
This item allows you to select FSB Frequency
Options: Auto (Default) /FSB 800 /FSB1066 /FSB 1333

on AUTO


DRAM Frequency
This item allows you to control the Memory Clock
Options: Auto (Default) /DDR2 533MHz /DDR2 638MHz / DDR2 667MHz / DDR2 800MHz / DDR2 851MHz / DDR2 886MHz / DDR2 1066MHz

On 800MHz


PCIE Clock By
This item allows you to select the PCIE clock control
Options: Auto (Default) / Fixed 100 / Manual

on AUTO


PCIE Frequency Setting
This item allows you to select the PCIE clock control
Options are 100 (Default) / Min=100 - Max=150

on default of 100



****VOLTAGES****


VTT Overvoltage
This item allows you to select the FSB Voltage Control
Options: Auto (Default) / +0.025v - +0.700v

No idea what to set this at...???


CPU GTL Ref Voltage
Options: 0.63*VTT (Default) / 0.67*VTT / 0.58*VTT

No idea on this one either...???


Basically I'm just trying to get the lowest stable volt on an OC. (currently 1.86 OCed to 2.3, want to get to 2.5 while not surpassing 1.35v with the auto-voltage thingie)

------------------------------ i7 920, E5300
GTX260, HD4870, HD4830
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Bluescreendeath   07-09-2009 at 09:18:55 PM
- 0 +

Anyone with the same or similar mobo?

------------------------------ i7 920, E5300
GTX260, HD4870, HD4830
 Reply to Bluescreendeath
Bluescreendeath   07-10-2009 at 12:48:17 AM
- 0 +

I see, thanks.
That other person didn't have much luck with that mobo either...

------------------------------ i7 920, E5300
GTX260, HD4870, HD4830
 Reply to Bluescreendeath
zipzoomflyhigh   07-10-2009 at 04:31:42 PM
- 0 +

Are we talking about a 65nm E6300 @ 1.86ghz or a 45nm E6300 @ 2.8ghz?

Have you read your manual, those bios settings should be explained in there.

What exactly are you asking?? The voltages you list are correct. They do fluctuate and the cpu clocks down when it's idle.


Message edited by zipzoomflyhigh on 07-10-2009 at 04:35:39 PM
------------------------------ P965/Q6700@3.2 8MB HD4850 OC Edition
4GB Corsair XMS 800
Vista64/Win7
Fatality 550w/Antec 300
 Reply to zipzoomflyhigh
Bluescreendeath   07-10-2009 at 06:36:09 PM
- 0 +

The manual doesn't explain anything. The only thing it has about overclocking is the software overclock utility.

And it's the 65nm 1.86GHz Core2Duo


My cpu voltage fluctuates from 1.184 to 1.296 when OCed to 2.3GHz...so I'm not sure if this is voltage-auto mode or the result of intel stepspeed?

I'd like it to OC it to 2.5Ghz while staying under 1.296, but when I do, it raises the voltage to 1.36

------------------------------ i7 920, E5300
GTX260, HD4870, HD4830
 Reply to Bluescreendeath
zipzoomflyhigh   07-10-2009 at 07:55:15 PM
- 0 +

I said the settings should be explained in the manual.

I never said the manual would explain overclocking. lol

I run my E6300 at 3.45ghz with stock voltage (1.325)

Dont leave it on auto, set it to manual and put it at 1.325v. In fact that cpu has no problem running 3ghz undervoted to 1.25v. So theres no reason to overvolt.

Message quoted 1 times
Message edited by zipzoomflyhigh on 07-10-2009 at 07:58:35 PM
------------------------------ P965/Q6700@3.2 8MB HD4850 OC Edition
4GB Corsair XMS 800
Vista64/Win7
Fatality 550w/Antec 300
 Reply to zipzoomflyhigh
Bluescreendeath   07-11-2009 at 06:01:12 AM
- 0 +

zipzoomflyhigh wrote :

I said the settings should be explained in the manual.

I never said the manual would explain overclocking. lol

I run my E6300 at 3.45ghz with stock voltage (1.325)

Dont leave it on auto, set it to manual and put it at 1.325v. In fact that cpu has no problem running 3ghz undervoted to 1.25v. So theres no reason to overvolt.



I know that already.

But the problem is there is no way to manually set the cpu voltage in BIOS.

The only voltage that can be changed in BIOS are stuff like overvoltage +5%, +10%, +15%


Basically, there is no where to "directly" change the CPU voltage in BIOS...or am I missing something.

------------------------------ i7 920, E5300
GTX260, HD4870, HD4830
 Reply to Bluescreendeath
zipzoomflyhigh   07-12-2009 at 04:34:09 AM
- 0 +

....your missing something. You just said voltage is on auto, yet you say theres no way to change the voltage, well take it off auto.....

So you cant change the cpu voltage but you can change it +5%, +10%, etc, your contradicting yourself. Raising it +5% -IS- changing the voltage....

------------------------------ P965/Q6700@3.2 8MB HD4850 OC Edition
4GB Corsair XMS 800
Vista64/Win7
Fatality 550w/Antec 300
 Reply to zipzoomflyhigh
Bluescreendeath   07-12-2009 at 07:37:08 AM
- 0 +

No, when I say auto, I mean I can't change anything - the mobo/programs manage the voltage by itself. I don't mean an "auto/manual" option bar.

Again, the 5%, 10%, 15% is not changing the actual base CPU voltage, but only deals with cpu overvoltage. Since I don't know what the base CPU voltage value is, I have no idea what percentage will be changed if I use the overvoltage option.

I did try to guess-and-test it with auto-overvoltage, 5% overvoltage, 10% overvoltage, but the numbers didn't seem to make a difference when I checked CPU-z


Message edited by Bluescreendeath on 07-12-2009 at 07:38:16 AM
------------------------------ i7 920, E5300
GTX260, HD4870, HD4830
 Reply to Bluescreendeath
zipzoomflyhigh   07-12-2009 at 02:30:37 PM
- 0 +

Hmmm....my old maybe lets me change the voltages to anything I want. It has not problem running 3ghz undervolted from 1.325 to 1.25.
Its a shame because Imo its the best overclocking cpu ever made.

------------------------------ P965/Q6700@3.2 8MB HD4850 OC Edition
4GB Corsair XMS 800
Vista64/Win7
Fatality 550w/Antec 300
 Reply to zipzoomflyhigh
Bluescreendeath   07-13-2009 at 05:14:54 AM
- 0 +

What's the best OC cpu ever made? The E6300 @ 1.86? :D

------------------------------ i7 920, E5300
GTX260, HD4870, HD4830
 Reply to Bluescreendeath
zipzoomflyhigh   07-13-2009 at 04:34:30 PM
- 0 +

Imo the 65nm E6300, the E8400 and the E5200 are the best overclocking cpu's ever made.

------------------------------ P965/Q6700@3.2 8MB HD4850 OC Edition
4GB Corsair XMS 800
Vista64/Win7
Fatality 550w/Antec 300
 Reply to zipzoomflyhigh
Bluescreendeath   07-15-2009 at 10:07:11 PM
- 0 +

nice. What about the E4300?

------------------------------ i7 920, E5300
GTX260, HD4870, HD4830
 Reply to Bluescreendeath
Bluescreendeath   07-22-2009 at 06:23:08 PM
- 0 +

Btw, due to CPU vdroop (which I believe is the difference in voltage between idle and load?)

what is the "set" cpu voltage?

If I set the CPU voltage to 1.3v, or a manual says the max it can take is 1.3v, is this referring to the voltage during idle or during load?

------------------------------ i7 920, E5300
GTX260, HD4870, HD4830
 Reply to Bluescreendeath
Hard Line   07-23-2009 at 07:00:43 PM
- 0 +

I have to say that the 45nm e7200 is one of the best overclockers... i got mine running at 4.03 1700 FSB on air using a freezer 7 pro and a biostar TP35D2A7 idles 42 load 63 which is well under the 75C ( voltage is a little high but teps are fne so i don't worry about it


Message edited by Hard Line on 07-23-2009 at 08:33:35 PM
Reply to Hard Line
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