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post #71 of 80
Quote:
Originally Posted by Baron von Awesome View Post
Ok, so new question. I can't push past 4.0ghz without prime95 crashing. I have the Black Edition CPU, so I OC via the multiplier. I am VERY new to this. Do I need to adjust the voltage for more stability? I have voltage set to auto, and it says my CPU_VCORE is at 1.47v; yet my VID is 1.375v. What is the difference, and is my voltage an issue? I believe my PSU is enough at 850w... right?

Thanks again!
Firstly, you'll want to change things to manual.

Vcore - You're good up to 1.55v safely, 1.60v with some balls.
CPU-NB Voltage - You're good up to 1.45v.

You can overclock by multiplier, or you can raise your reference clock (FSB). Raising the reference clock will raise your RAM, NB, and HT Link speeds as well.

You will also eventually want to get your NB clocked higher too. More NB will give you a quicker, snappier experience.

RAM speed and timings can also be played with eventually. Work on the CPU and NB first though.
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post #72 of 80
Thread Starter 
Quote:
Firstly, you'll want to change things to manual.

Vcore - You're good up to 1.55v safely, 1.60v with some balls.
CPU-NB Voltage - You're good up to 1.45v.

You can overclock by multiplier, or you can raise your reference clock (FSB). Raising the reference clock will raise your RAM, NB, and HT Link speeds as well.

You will also eventually want to get your NB clocked higher too. More NB will give you a quicker, snappier experience.

RAM speed and timings can also be played with eventually. Work on the CPU and NB first though.
Well, I researched doing it by FSB clock, but I found it pretty confusing. I know nothing about RAM timings or settings, and I only know very little about stable NB and HT Link settings. Correct me if I am wrong, but with FSB clock do I lower my multiplier and raise the clock speeds?

For my setup (listed below), what would be safe speeds to change it to? I read that HT Link should be between 2000 and 22000, but overall I am not sure what would be ideal stable settings for a 4.0ghz or higher overclock, in regard to voltage, HT Link, RAM, and NB. As a novice, I do not want to mess around with it on limited knowledge.

Any suggestions would be appreciated!
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post #73 of 80
Quote:
Originally Posted by Baron von Awesome View Post
Well, I researched doing it by FSB clock, but I found it pretty confusing. I know nothing about RAM timings or settings, and I only know very little about stable NB and HT Link settings. Correct me if I am wrong, but with FSB clock do I lower my multiplier and raise the clock speeds?

For my setup (listed below), what would be safe speeds to change it to? I read that HT Link should be between 2000 and 22000, but overall I am not sure what would be ideal stable settings for a 4.0ghz or higher overclock, in regard to voltage, HT Link, RAM, and NB. As a novice, I do not want to mess around with it on limited knowledge.

Any suggestions would be appreciated!
Here's a few things that could get you off on a starting point....It might work, it might not.

250 Reference Clock
10x NB Multiplier (puts it at 2500)
Adjust CPU-NB voltage as needed (shouldn't need more than like 1.25v)
16x CPU Multiplier (puts it at 4000MHz)
Adjust Vcore as needed (probably set it to 1.47v since that's what it was at auto)
8x HT Link Multiplier (puts it at 2000)
5.33x or DDR3-1066 divider (puts RAM back to 1333 speeds)

If the above works, you can then tweak things a little more. Such as trying a higher NB multiplier one at a time. Or trying different RAM speeds, or tightening timings.

The above is just a rough / quick guesstimate. You could also JUST use the multiplier. But you'll eventually likely hit a wall, as its not "best" to use JUST the multipliers.

But yes, if you raise your reference clock, you will have to lower the multipliers on things to put it back to the proper speeds.
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post #74 of 80
Why has the last few suggestions to AMD overclockers been to raise the CPU Ref Clock? I was able to get more stable overclocks using the multipliers and voltages only. One of the benefits of having a Black Edition CPU.
post #75 of 80
Set the Vcore to 1.55v and go for the highest multiplier you can go. Try 4.4Ghz first and if fails, lower it to 4.3Ghz and if it passes 1H Blend on P95 shoot to 4.5Ghz!
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post #76 of 80
Thread Starter 
Quote:
Here's a few things that could get you off on a starting point....It might work, it might not.

250 Reference Clock
10x NB Multiplier (puts it at 2500)
Adjust CPU-NB voltage as needed (shouldn't need more than like 1.25v)
16x CPU Multiplier (puts it at 4000MHz)
Adjust Vcore as needed (probably set it to 1.47v since that's what it was at auto)
8x HT Link Multiplier (puts it at 2000)
5.33x or DDR3-1066 divider (puts RAM back to 1333 speeds)

If the above works, you can then tweak things a little more. Such as trying a higher NB multiplier one at a time. Or trying different RAM speeds, or tightening timings.

The above is just a rough / quick guesstimate. You could also JUST use the multiplier. But you'll eventually likely hit a wall, as its not "best" to use JUST the multipliers.

But yes, if you raise your reference clock, you will have to lower the multipliers on things to put it back to the proper speeds.
Ok, so I raised the FSB to 250 and lowered the multi to x16. I also manually changed the NB speed to 2500 and the HT Link to 2000. However, I left the voltages on auto. My computer seems to be running faster since I changed the settings, but I am still getting a crash with Prime95 tests.

My settings:
Clock: 250mhz
Core Speed: 4000mhz (x16 multi)
NB Speed: 2500mhz (x10 multi)
HT Link: 2000mhz
PCIe Speed: 100mhz

Memory (Auto):
Memory Frequency: I have DDR3 SDRAM 1333mhz, was running at 600mhz and now it is 833mhz.
FSB/DRAM: 3:10

Voltage (Auto):
CPU VCORE (Auto): 1.47v
+12v: 1.84v
+5v: 3.02v
+3.3v: 1.84v
VID (whatever that is): 1.375v
HT ref. clock: 1.38v

***Attached screen shot will hopefully add more insight***

I am a little lost, heh.
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post #77 of 80
Your memory could be crashing. It's 1333 memory, and you've got it at 1667. Lower it down to the 1066 divider, or 1333 (or 5.33x multiplier).

You should also manually set those voltages. A lot of times, auto get you the right voltages.
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post #78 of 80
Quote:
Originally Posted by pioneerisloud View Post
Your memory could be crashing. It's 1333 memory, and you've got it at 1667. Lower it down to the 1066 divider, or 1333 (or 5.33x multiplier).

You should also manually set those voltages. A lot of times, auto get you the right voltages.
This.
you are running your memory at much higher speeds then it is designed, so if you want to run at those speeds, first get your overclock stable, then work on getting the ram stable.
post #79 of 80
Thread Starter 
I am not sure where the RAM multiplier is. I tried setting the divider to 1333mhz, and it crashes on boot. Do I need to worry about the timings, or can I just leave them on auto?
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post #80 of 80
Thread Starter 
Ok, so I messed with some settings and this is what I have now. It seems that if I raise the core clock past 200, my RAM will run too high. If I set the RAM to 1066mhz or 1333mhz in the divider it will crash my system.


My settings:

Clock: 200
Core Speed: 4013mhz (x20 multi)
NB Speed: 2608mhz (x13 multi)
HT Link: 2207mhz
PCIe Speed: 100mhz

Memory (Auto):
Memory Frequency: DDR3 SDRAM 1333mhz (frequency states: 669.28mhz)
Ratio FSB/DRAM: 3:10

Voltage:
CPU VCORE: 1.5125v
+12v: 1.84v
+5v: 3.04v
+3.3v: 1.84v
HT Voltage: 1.200v
NB Voltage: 1.100v
NB VID: 1.4000v
SB Voltage: 1.350v
DDR Voltage: 1.600v

Does anything look out of place? I am about to see if Prime95 crashes my system again.

*Edit: I have been stress testing for about a half hour, no issues yet. It would usually crash almost instantly. It must have been my voltage settings.*
Edited by Baron von Awesome - 5/1/11 at 2:55pm
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