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thoughts on my 3700 OC attempt - Page 3

post #21 of 53
Quote:
Originally Posted by ffmadcow
I have the HTT at 3 and have gotten a good boot at 270 as of right now set at a 8X multi to find the max FSB. Looking very hopeful now. I will bump the DIMM voltage on next reboot for 275. Going in 5 MHz increments right now.
Since you're much higher with your fsb now, drop the cpu mult to 7X because your ram is now well above stock speeds. That will slow it down some and help you find your fsb max without the ram getting in the way. Looks good so far, even if it stops at 275 or 280, we can work with that. Much better than 240
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post #22 of 53
Thread Starter 
OK, died at 275, so I am thinking I will try 272 and call it at that and then move on to the memory speed.

When it says to keep the CPU/memory ratio 1:1 for this, does that mean to keep increasing the FSB to correlate with RAM increases? Thanks again.

I am stable at 272. Sweet.
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post #23 of 53
Thread Starter 
Quote:
Originally Posted by sccr64472
Since you're much higher with your fsb now, drop the cpu mult to 7X because your ram is now well above stock speeds. That will slow it down some and help you find your fsb max without the ram getting in the way. Looks good so far, even if it stops at 275 or 280, we can work with that. Much better than 240
I will try 7X and 275 and see if it dies again. Thanks.
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post #24 of 53
Thread Starter 
OK, stable at 7X and 275. Going for 280.
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post #25 of 53
Quote:
Originally Posted by ffmadcow
OK, died at 275, so I am thinking I will try 272 and call it at that and then move on to the memory speed.

When it says to keep the CPU/memory ratio 1:1 for this, does that mean to keep increasing the FSB to correlate with RAM increases? Thanks again.

I am stable at 272. Sweet.
Yes, lower your fsb back down, change your divider back to 400hz, and start upping the fsb in 5 mhz increments again. This time though, your ram will crap out before your motherboard will, so it'll tell you your ram max. Don't forget to use 2T CPC and when you run into problems, bump Vdimm a tad.
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post #26 of 53
Thread Starter 
Sitting stable in OS at 280, 7X.

So do I keep the BIOS RAM setting at 400 and then only adjust the mobo FSB, or do I adjust both?

For instance, let's say that I crap out here at 280 and say cool. That should be more than enough for now. I then ratchet it back down to 200, put the RAM to 400, set some tight timings and then start increasing what? The mobo FSB, the RAM or both to stay equal? This is the area I am a little confused on.

Thanks again.
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post #27 of 53
Quote:
Originally Posted by ffmadcow
Sitting stable in OS at 280, 7X.

So do I keep the BIOS RAM setting at 400 and then only adjust the mobo FSB, or do I adjust both?

For instance, let's say that I crap out here at 280 and say cool. That should be more than enough for now. I then ratchet it back down to 200, put the RAM to 400, set some tight timings and then start increasing what? The mobo FSB, the RAM or both to stay equal? This is the area I am a little confused on.

Thanks again.
You will be leaving the ram divider setting at 400 mhz to find your ram max. Upping your fsb with your ram divider at 400 mhz will lock your ram speed to your fsb speed. Any change in fsb, will be seen in an increase in ram speed as well. For example, if you change your fsb from 200 mhz to 205 mhz, your ram speed will change from 200 to 205 also. Make sense? Once you hit your max, you can loosen timings and increase Vdimm to move higher.
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post #28 of 53
Thread Starter 
Quote:
Originally Posted by sccr64472
You will be leaving the ram divider setting at 400 mhz to find your ram max. Upping your fsb with your ram divider at 400 mhz will lock your ram speed to your fsb speed. Any change in fsb, will be seen in an increase in ram speed as well. For example, if you change your fsb from 200 mhz to 205 mhz, your ram speed will change from 200 to 205 also. Make sense? Once you hit your max, you can loosen timings and increase Vdimm to move higher.
Cool. Thanks.

Can I assume that since my mobo can hit 280+ that there is not much sense in testing it further at this point since my RAM is limiting me? I am assuming that I can keep the multi at 8X or so, and then we play with that later?
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post #29 of 53
Quote:
Originally Posted by ffmadcow
Cool. Thanks.

Can I assume that since my mobo can hit 280+ that there is not much sense in testing it further at this point since my RAM is limiting me? I am assuming that I can keep the multi at 8X or so, and then we play with that later?
You're making the assumption that your final system settings will have your fsb and ram at equal speeds and that might not be the case. For instance, I run a 286 fsb, but ram at 230. Knowing your fsb max is nice,regardless of what your ram can do. It'll help when we use Gogar's Tool to find your final system settings. If you have the time, I'd continue until it stops or you hit 300 mhz, whichever comes first. Yes, you should leave your cpu on a low multiplier for this step also.
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post #30 of 53
Thread Starter 
Quote:
Originally Posted by sccr64472
You're making the assumption that your final system settings will have your fsb and ram at equal speeds and that might not be the case. For instance, I run a 286 fsb, but ram at 230. Knowing your fsb max is nice,regardless of what your ram can do. It'll help when we use Gogar's Tool to find your final system settings. If you have the time, I'd continue until it stops or you hit 300 mhz, whichever comes first. Yes, you should leave your cpu on a low multiplier for this step also.
Thanks again. I am going for 285 now, then.
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