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post #21 of 43
Quote:
Anyway any OCer nows that normally you loosen your timmings to 5-5-5-15 before you OC. Also I did state that setting it to 5 will help greatly as far stability goes. 500 FSB on a P5B should be easy right and if not then set up a 4:5 divider and set the FSB to 400 and bam you have 500 on the RAM
I dont loosen up the timings until i get to a point where the RAM is not stable..even then the 1st thing i do is add voltage. I prefer to keep the tightest timing possible...to each his own..nbd. I dont think the way to see if your RAM is going to hang at 1000mhz is to set a 500mhz FSB however...that seems like a foolish move, as there are so many variables to keeping a 500mhz FSB stable...yes, even on a P5B-dlx. I would recommend you set the RAM for 1000mhz but use a FSB that you are comfortable with and know will be stable for the RAM. After all, you dont want the mobo to cause instability when trying to determine if you have a good setting going for your RAM OC.

OC your RAM 1st...when you know what it likes at 500mhz...then try for 500mhz FSB...not the other way around. That is just asking for issues.

And. no I wasnt 'taking a shot' ..just pointing out that contradicting yourself in your opening statement, might not be the way to introduce an idea to someone. You were on the right track with your settings...just a different method, which is ok too.
post #22 of 43
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Im still working on it. Again, thanks for all the help, suggestions, and attention. Im sure ill get things working great and stable with your help guys!
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post #23 of 43
Thread Starter 
Another Update
i have set my cpu back to 1.5375v and my ram is at 2.25 with 5-5-5-15. Also i have my northbridge set at 1.45v. when i test small fft on the cpu everything works fine. When i run memtest, everything works fine. But when i blend on orthos it stops after test 5 or so.
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post #24 of 43
Weird..bad orthos install? If you can pass small FTT's and a memtest...I dont see what the issue is. How are your temps..for cpu and NB? Maybe excessive temps are to blame?
post #25 of 43
Quote:
Originally Posted by CL3P20 View Post
I dont loosen up the timings until i get to a point where the RAM is not stable..even then the 1st thing i do is add voltage. I prefer to keep the tightest timing possible...to each his own..nbd. I dont think the way to see if your RAM is going to hang at 1000mhz is to set a 500mhz FSB however...that seems like a foolish move, as there are so many variables to keeping a 500mhz FSB stable...yes, even on a P5B-dlx. I would recommend you set the RAM for 1000mhz but use a FSB that you are comfortable with and know will be stable for the RAM. After all, you dont want the mobo to cause instability when trying to determine if you have a good setting going for your RAM OC.

OC your RAM 1st...when you know what it likes at 500mhz...then try for 500mhz FSB...not the other way around. That is just asking for issues.

And. no I wasnt 'taking a shot' ..just pointing out that contradicting yourself in your opening statement, might not be the way to introduce an idea to someone. You were on the right track with your settings...just a different method, which is ok too.
He is on a 4:5 divider and it is my mistake... I was reffering to the RAM at 500 not the NB.

The way I OC is I first set my RAM loose with stock voltage. Then I OC my FSB till I hit a wall the I add voltage to the CPU. When I find the CPU max stable OC I then tighten up the RAM and tweak out the bios. I do this so that I can better determine what may be holding back the OC. In this case if you loosen up the timings then you can better determine where the wall is.
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post #26 of 43
Thread Starter 
Villainstone is helping me with great results. My mobo temp is 35c and both cores are 48-51c tops. The only reason why it is getting so warm is because of that darn vcore at 1.537
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post #27 of 43
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Ok, just to update clp320 and anyone else that is looking, i set my nb to 1.55 and sb to 1.6 and it looks like it did the trick. I am at 41 min stable with no errors on blend orthos. I might be able to back down the volts on the cpu!
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post #28 of 43
Quote:
RAM at 500 not the NB.
..keep in mind everytime you drop the CPU multi, you raise the NB speed around 45mhz. Soo, if you are 1:1 at 333mhz FSB, then lower the multi one notch..your new settings would be:

FSB 333, NB ~375mhz and 333mhz RAM.

NB speed at 375mhz is very close to the top end of the strap, [400mhz end] which means your NB latency is still the same as it was at 333mhz. This combo, would give you better results than the 333mhz/sync combo would, if the CPU speeds were the same. Since you cannot in real-world set the same system for these two combinations, it is hard to show you the results.

With your RAM, I would want a higher NB speed, rather than FSB...reason being, the NB will bottleneck your throughput before the CPU will. If you can run a high FSB..good then lower your multi and raise the FSB some more.
ie.-> If you can run 4:5 using a 7x multi you should have outstanding results! Or try to find another divider/speed combo, keeping the same characteristics as below:

FSB- 400mhz
DDR- 500mhz
divider = 4:5
7x multi- lowering the multi 2x from its the cpu's stock value, will raise the NB speed ~90mhz...
---------------
overview:

FSB- 400mhz [1.6ghz effective]
DDR- 500mhz [2.0ghz effective]
NB speed- ~500mhz [2.0ghz effective]

call me crazy..but give it a try and post some SuperPi times and other benchies if you got'em.

Good news on the Orthos test..! keep it going!
post #29 of 43
Thread Starter 
ok here are some benchmarks at my current setup. I am gonna see if i can lower my vcore on my cpu and stay stable. Also after playing with my cpu i am going to change around the fsb and then memory
http://www.overclock.net/gallery/sho...ze/big/cat/500
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post #30 of 43
nice! keep it coming
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