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3700+ SD Overclocking Journey - Page 2

post #11 of 104
Thread Starter 
Okay, gonna head out and try to rachet it up a bit more. See you guys soon!
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post #12 of 104
Thread Starter 
Well, got it up to 2.4, but unstable. I have several questions.

LDT voltage- What is this, and what does it do?
Chipset Voltage- My NF4 Temp is reading ~47C, what should I do with the voltage?
CPU Startup Voltage- I put this at 1.4something, what should I set it to?
Also, What controls my main system voltage? CPU Startup or CPU VID control?
So, if anyone can clarify this, esp. ncsa, that would be very helpful. Thanks guys!
Quote:
Originally Posted by ncsa's NF4 OC Guide
CPU Startup : 1.400v
CPU Vid Control : 1.350 [CAUTION: This = 1.66v use what is required for your CPU and OC]
CPU Special VID Control : 123%
LDT Voltage Control : 1.4v
Chipset : 1.6v
DRAM Control : 2.6V
DRAM .03 : Disable
Burning Phoenix
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post #13 of 104
Quote:
Originally Posted by Burn
Well, got it up to 3.4, but unstable. I have several questions.

LDT voltage- What is this, and what does it do?
Chipset Voltage- My NF4 Temp is reading ~47C, what should I do with the voltage?
CPU Startup Voltage- I put this at 1.4something, what should I set it to?
Also, What controls my main system voltage? CPU Startup or CPU VID control?
So, if anyone can clarify this, esp. ncsa, that would be very helpful. Thanks guys!
Wow 3.4 GHz is pretty impresseve even if it's unstable. The highest my 3700+ would do suicide was 3.4 GHz on phase, looks like you got a good chip there.

LDT voltage is HyperTransport voltage, increase that if you think HTT is holding you back, or you can also lower its speed. Your chipset is pretty warm, what are you using to cool the sucker? Stock? Did you remove the default yellow TIM and replace it with something better? Increasing it shoudl help if your motherboard is maxed out.

Default voltage of the 3700+ is 1.4V, go up a bit further. With water I'd go as high as 1.65V. From personal experience going above 1.7V doesn't help overclocking very much but your mileage may vary.
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post #14 of 104
Thread Starter 
Wow, I overestimated a wee bit. It's at 2.4!

Anyway, I'll jack the LDT voltage up to 1.8 and see what happens, it's at 1.71 right now according to MBM5, calibrated with a DMM. Thanks for the clarification.
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post #15 of 104
i cant believe you clocked yours at 3.4 that is so high
i wonder how high i can clock my 3700 hehe
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post #16 of 104
I dunno if this helps, but I just over clocked my 3700+ San Diego with help you lot!

It's http://www.overclock.net/amd-cpus/59...-question.html
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post #17 of 104
Quote:
Originally Posted by Burn
Wow, I overestimated a wee bit. It's at 2.4!

Anyway, I'll jack the LDT voltage up to 1.8 and see what happens, it's at 1.71 right now according to MBM5, calibrated with a DMM. Thanks for the clarification.
Oh. That's surprising that 2.4 GHz is unstable, I don't think it would be the chip, HTT would be my prime suspect. What is it set to right now (the multiplier)? Try lowering it to 4x or 3x, HTT speed doesn't really affect performance that much.
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post #18 of 104
Thread Starter 
There's my stable shot of 2.4. Usually when I'm not stable I get BSOD's all over the place. I can't guarantee 100% because I haven't primed it, but it's Windows stable.
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post #19 of 104
A few things to work through:

Set HTT multi to x3 - then you do not have to worry unless you start to run some very different dividers.

The LDT & HT voltages I use to bump high when running HT 350+ or if you find that CPUz sometimes reports that another copy is running and you know that there is not.

Also set the Chipset fan temps to max at >30C, these fans are quiet and running them at full speed will help drop temps a bit and help stability.

You will be best to really find out what the Chips are on those modules as they may not be TCCx as there is an part indicator implying CAS1.5

On the back get the Product Code and the PN number - I will get the real chips for you from the 'horses' mouth. Then the right BIOS, Vdimm and Slots can be used.

In the meantime run CAS 2.5-3-3-6, place a divider like 133 as I think your stability issues are currently mem timings and these are rated to DDR500, so at a min (CPU allowing) 2.75GHz should run without Mem being an issue.

Work the CPU to see where it will go, run prime for 6-10mins as a quick initial test and at some milestone places Pi32M / OCCT as an indicator - do not worry about times as you can tune for that later on.

Bump Vcore Only when really necessary.

Keep working upwards
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post #20 of 104
Thread Starter 
First off, thanks for helping.

It's Evil's BH-5. Geil ONE BH stuff, dual ratings. CAS 1.5 @ PC3200, CAS 2 @ PC4000.

As to the Chipset, I haven't applied AS5 to it, I'm gonna do that tonight. Probably within the next 5-10 minutes.

As to HTT & LDT Voltages, where should these be? What would you suggest as to voltages. I'll be putting AS5 on the Chipset in the next 5 minutes. According to my DMM, I'm sitting at: LDT: 1.26 Volts, and Chipset, 1.52 Volts.

Will set the fan speed in my BIOS when I get there.
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Burning Phoenix
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