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PII X4 945 (non-BE) overclocking results...

post #1 of 13
Thread Starter 
I'm new to overclocking on AMD since my last system was Intel, and last AMD system was with an A64 3200+ which I had going at 2.5ghz for several years.

So far with the stock cooler (I'm going to be putting on my older Thermalright XP-90 on it when I get the retention bracket adapter I ordered to use it on my new AM3+ motherboard), I've gotten up to 3.3ghz stable (Folding@home stable thus far, crossing fingers) @ max of 55C. This is all at stock voltages on every component.



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My FSB is at 220mhz, HT at 1980mhz, RAM at 1760mhz (with 11, 11, 11, 30, 2T timings), and NB at 2200mhz.

Voltages are as per Asus TurboV are:

CPU voltage: 1.35v
CPU/NB voltage: 1.2v
DRAM voltage: 1.5v
VDDA voltage: 2.5v
SB voltage: 1.1v
HT voltage: 1.20v
NB1.8 voltage: 1.8v

Any glaring mistakes, improvements, tips, etc you guys can think of or am I on the right path?

I plan to keep bumping up the speed once I get my XP-90 installed and try to go for 3.6ghz at least. Thanks!
Edited by Swiftdeathz - 8/7/11 at 5:24pm
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post #2 of 13
You're on the right path

To keep various clocks from limiting your OC you could set the memory and the NB a notch lower. You should be able to get to 3.6GHz with a slight voltage bump.
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post #3 of 13
Thread Starter 
I finally got my retention bracket to mount my XP-90 with a 92mm Panoflo that does around 56.8cfm at 35.0dba and my temps at load are amazing.

The system is mildly overclocked to 3.3ghz from stock 3ghz and with ambient temps that are about 5C higher than normal (no AC on at the moment), the temps are much lower.

Before with stock cooler idle of 29-32C and load running F@H were around 54-59C, now I have idle temps of 27-29C and load temps of 42-43C.

Definite improvement and am happy this solution which cost me $4 will hold me over till BD and I may invest in a newer more up to date HSF.

Update for anybody that cares:

So far I'm stress testing at 3750mhz. I don't know how much higher I'll be able to go with my FSB already 250mhz since I don't have a BE edition. At this speed I'm using 1.4125v in BIOS which gives me around 1.380v while doing Prime95 small FFT's. Loading at a max of around 47C and idle at around 27C.

I'm new to overclocking on this platform so I have a bunch of tweaking/tinkering to do. Like I hear if you up the NB speed you get better memory performance, etc. So far prime stable at these settings:

CPU Frequency 250mhz
CPU Voltage 1.4125v
CPU/NB Voltage 1.2v
DRAM Voltage 1.5v
VDDA Voltage 2.5v
SB Voltage 1.1v
HT Voltage 1.20v
NB1.8 Voltage 1.8v
CPU ratio 15 3750mhz

Wish me luck.
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post #4 of 13
Good luck, I had a 945 also and managed to get it stable at 4.056 with a 312 fsb and 13x multi. It took 1.52v to get it stable but cooling was sufficient and temps were good. Keep at it though, your on the right path.
 
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post #5 of 13
Thread Starter 
Nagle, so far I'm stable at 1.45v in BIOS which in windows @ load is dropping to 1.416v

I'm curious, how much did you have to up your CPU/NB voltage to get up to 312mhz? Also did you overclock the NB ratio? (like to get it over 2000mhz to get better memory performance)

Thanks
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post #6 of 13
Thread Starter 
Yeah I spoke too soon. I lost a huge WU since I thought the machine was stable but when I checked it in the morning it was stalled. The system was still up but the work unit had ended. This was at 3.6ghz and 1.4v and I am now testing with a bit more juice 3.6ghz at 1.45v

I still am not going over 43-47C at load. My HT is at 1920mhz, my ram is in spec at 1600mhz, and my NB I also have at 1920mhz, just want to find what's 24/7 stable at the moment. I could even complete all benchmarks and system benchmarks (completed Cinebench, 3dmark vantage, heaven 2.5) at 3750 and even 3600 with lower voltage, but failed at 24/7 folding.

Once I know it's 24/7 load stable, I'll work on the NB. The highest I can get it to 2400mhz at 240 fsb for 3.6ghz.
Edited by Swiftdeathz - 8/11/11 at 11:48am
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post #7 of 13
1760 11-11-11!?!?!?!!
By joves, the performance must be terrible.... get those timings down!

Normally DDR3-1600 kits are rated for 9-9-9
post #8 of 13
Thread Starter 
I figured I needed to loosen the timings to get stability overclocking the memory from 1600 to 1760, so to eliminate the memory being the unstable that's what I did.

Right now I'm running the ram at 1600 9-9-9-25-40 2T since my 3750mhz CPU overclock wasn't stable and I'm running at 240x15=3.6ghz atm.
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post #9 of 13
At 1760Mhz 11-11-11 you will not receive any performance gain (in fact because the timings are so high you may experience performance loss) over 1600 CL9. Might want to balance it out by using somewhat lower timings - such as 9-10-9 or 10-10-10.
post #10 of 13
Quote:
Originally Posted by Swiftdeathz View Post
Nagle, so far I'm stable at 1.45v in BIOS which in windows @ load is dropping to 1.416v

I'm curious, how much did you have to up your CPU/NB voltage to get up to 312mhz? Also did you overclock the NB ratio? (like to get it over 2000mhz to get better memory performance)

Thanks
I can't rember the NB settings. I know it was around 2600-2800 and I was using like 1.35v for it.
 
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