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What next? - 955 BE OC

post #1 of 21
Thread Starter 
I bought a 955 BE to replace my old chip and bought a Corsair A70 to go with it.
I've been testing for about 5 minutes on Prime95 for stability, and increased voltage/[clock+multi] continually.

I'm now at 4.11 Ghz. I idle at 28-29°C and load at 40°C

I have no experience overclocking RAM (G.Skill DDR3) and hyperlink transport, etc

I'll push the CPU further but right now I'd like to know what else I should increase.

PS. My 5850 is maxxed out in Catalyst Control Center. I don't know what other programs I should use to O'C it.

For helping you help me: http://www.ncix.com/products/?sku=30...acture=G.Skill
Edited by dmanstasiu - 4/3/11 at 8:41pm
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post #2 of 21
See if that CPU can do 20 passes of Intel Burn Test on maximum and use MSI afterburner to oc that card more
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post #3 of 21
Not sure if 5 minutes of p95 is enough, probably want to try at least 2 hours before you do anything else.

After that you could try upping your RAM and Northbridge frequency and tightening your RAM timings.
     
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post #4 of 21
Thread Starter 
Intel Burn test for AMD? I'll try it
As for MSI Afterburner... is there unlocked/locked GPUs too? Or are all GPUs unlocked by default?

Quote:
After that you could try upping your RAM and Northbridge frequency and tightening your RAM timings.
Can you elaborate more? I'm not very experienced with RAM/Northbridge overclocking
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post #5 of 21
Quote:
Originally Posted by dmanstasiu View Post
Can you elaborate more? I'm not very experienced with RAM/Northbridge overclocking
Upping the frequency means increasing the RAM speed from the default 1333MHz to say 1600MHz, and the NB from whatever you have it at to 2600 or 2800MHz.

As for tightening the timings, he means dropping the timings from the default 9-9-9-24 to something like 8-8-8-24 or 7-7-7-21. This will provide lower latencies, something that AMD systems seem to prefer.
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post #6 of 21
The other settings u should play with are the CPu-NB and the RAM freq and timings...timings can be a bit tricky so just stick to speeding up the ram freq. Do not increase the HT-Link...doing so will only add to instability, keep that at or around 2000mhz. Aim for a 2600-2800mhz CPU-NB OC and the memory bandwidth will jump big time.
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post #7 of 21
Quote:
Originally Posted by amd-dude View Post
The other settings u should play with are the CPu-NB and the RAM freq and timings...timings can be a bit tricky so just stick to speeding up the ram freq. Do not increase the HT-Link...doing so will only add to instability, keep that at or around 2000mhz. Aim for a 2600-2800mhz CPU-NB OC and the memory bandwidth will jump big time.
^ This. 2800MHz NB feels very responsive. And OP, I've got similar RAM to you (mines CAS 8, or 8-8-8-24 instead of 9-9-9-24) and it's not the best overclocking RAM. I'm running 1333MHz and 7-7-7-20 and that takes 1.6V :/ can't POST at 1600 CAS 7 no matter how many volts and 1600 CAS 8 gives a ton of errors in MEM86+ or whatever that program is called.
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post #8 of 21
Thread Starter 
I ran Intel's Burntest with 4 threads at maximum stress level, and I passed at 1.425V and 4.06Ghz. I'm happy with that for now. 45C max temp

Quote:
Originally Posted by razr m3 View Post
Upping the frequency means increasing the RAM speed from the default 1333MHz to say 1600MHz, and the NB from whatever you have it at to 2600 or 2800MHz.
My NB (I think) was at 2000, same as my HTT. As for the RAM speed, I don't get the 1333 or 1600.I get odd numbers (will post when I get back to computer)

Quote:
Originally Posted by razr m3 View Post
As for tightening the timings, he means dropping the timings from the default 9-9-9-24 to something like 8-8-8-24 or 7-7-7-21. This will provide lower latencies, something that AMD systems seem to prefer.
Okay I think I tampered with those a bit earlier

Are 9-9-9-24 or 7-7-7-21 the standards? What can I use to test whether my RAM is stable?

Quote:
Originally Posted by amd-dude View Post
The other settings u should play with are the CPu-NB and the RAM freq and timings...timings can be a bit tricky so just stick to speeding up the ram freq. Do not increase the HT-Link...doing so will only add to instability, keep that at or around 2000mhz. Aim for a 2600-2800mhz CPU-NB OC and the memory bandwidth will jump big time.
HT-Link is at 2000, I won't touch it.
Any way to test CPU-NB stability?

Edit: Whats the voltage limit for RAM? Rule of thumb kind of thing..
Edited by dmanstasiu - 4/3/11 at 9:41pm
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post #9 of 21
CPU-NB frequency
There are really no standards as to RAM timings
Lower them and see what works. You may need to keep the second value a bit higher than the others (i.e. 7-8-7 rather than 7-7-7). Use HyperPi @ 32M setting to stability test.
post #10 of 21
Quote:
Originally Posted by dmanstasiu View Post
My NB (I think) was at 2000, same as my HTT. As for the RAM speed, I don't get the 1333 or 1600.I get odd numbers (will post when I get back to computer)



Okay I think I tampered with those a bit earlier

Are 9-9-9-24 or 7-7-7-21 the standards? What can I use to test whether my RAM is stable?



HT-Link is at 2000, I won't touch it.
Any way to test CPU-NB stability?
Try to up your NB to around 2600-2800. Chances are you're going to need to up the voltages (I need 1.35V for a 2800MHz NB). Also, you're probably getting odd numbers because you used the FSB and Multiplier to overclock (just a guess) because increasing the FSB also alters the RAM frequency since they're linked.

Memory is usually 9-9-9-24, 8-8-8-24, or 7-7-7-21. Good RAM can be something like 6-8-6-20 stock. You can use MEM86+. I chose to install it on a tiny 128MB flash drive and then just boot it off the drive when starting up the computer (it's not actually run inside of Windows). Or you can use a program called MaxxMem. When I had instability, I would get lower numbers, high latencies, or the program not responding.

Any stress tests would show CPU-NB instability like P95 or IBT.

Edit:

Quote:
Originally Posted by xd_1771 View Post
CPU-NB frequency
There are really no standards as to RAM timings
Lower them and see what works. You may need to keep the second value a bit higher than the others (i.e. 7-8-7 rather than 7-7-7). Use HyperPi @ 32M setting to stability test.
OP, listen to this man. He will help get you where you need to be His knowledge is much greater than my own (which is fairly limited)
Edited by razr m3 - 4/3/11 at 9:50pm
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