why can't I touch the multiplier without a definite crash?

[xtknight]

It seems whenever I lower the modifier and up the FSB a little, my system crashes. also, what looked like dead pixels appeared on my LCD and the system completely froze. when I restarted, the pixels were gone...then I noticed some artifacts on the boot loader screen (but I always do, never in games though). I was trying to just overclock my memory, so I had set the multiplier lower and then raised the FSB. Then, just in case my memory (TCCD) couldn't handle 235MHz at 2-2-2-5, I raised a couple of memory timings with A64 Tweaker. After I changed the CAS setting, the system immediately froze. Any ideas? System is in my sig. This also happened when earlier when I hadn't had A64 Tweaker.

 

[Duvie]

Are you doing this in windows cause the pci locks are not working, or you want to make sure they stay enabled going into windows....

I would set the ram timings and divider in the bios for what HTT you are shooting for then use clockgen for the rest. I have had no issue vhange the multpliet and HTT with clockgen from 1.8ghz to 2.7ghz from 200HTT to 333HTT....

MY TCCD wont handle 2-2-2-5 at 235mhz for 470DDR...that is too much....Try 2-3-3-6 at around 445ddris the best I have been able to get with my gskills and only 2.85v to work with....

 

[imported_Kensai]

Could just be that your proc doesn't like it or as Duvie said, the pci locks and HTT.

 

[xtknight]

Originally posted by: Duvie
Are you doing this in windows cause the pci locks are not working, or you want to make sure they stay enabled going into windows....

I would set the ram timings and divider in the bios for what HTT you are shooting for then use clockgen for the rest. I have had no issue vhange the multpliet and HTT with clockgen from 1.8ghz to 2.7ghz from 200HTT to 333HTT....

MY TCCD wont handle 2-2-2-5 at 235mhz for 470DDR...that is too much....Try 2-3-3-6 at around 445ddris the best I have been able to get with my gskills and only 2.85v to work with....

Maybe my memory just can't handle it at 2-2-2-5.

I have quite a few reasons for doing it in Windows. First, Clockgen seems easier (don't have to reboot to test stability). Also I have an a8n-sli deluxe with a 1001 bios (for DiamondMax 10 hard drive compatibility :|) that won't let me touch the FSB at all. Lastly, I only do temporary overclocks when I really need every last MHz of juice out of my system, like when compiling levels (25mins of pain). If I could get my 3500+ up to FX-55 performance that would be great, and I'm sure I'd notice a raw performance difference in compiling. From what I've seen, even most 3000+/3200+ CPUs can get up to FX-55. I don't want to stress my system any more than I need to, so after I'm done compiling I'll put it back to stock because I don't need the performance anymore. I guess it's sort of like a manual "ASUS AI NOS" if that's what you want to call it. Hell, maybe I'll just enable AI NOS when they fix my SATA drive problem. Only BIOS 1001 works with my drive that's why I can't update.

Hmmm...about the 1001 BIOS not overclocking well: it didn't have pci locks, is that what you're saying?

 

[GuitarDaddy]

I have the same board, and it doesn't play nice with the windows O/C utilities. AI booster and nTune are especially bad, I've gotten to where I don't even use them. Clockgen is better, I have no problems adjusting HTT with it, but it will occasionally crash when making a multi change.

If your going to change multi with clockgen, make an offsetting change in HTT at the same time, if you up the mult bring the HTT down some. If you drop the multi bring the HTT up some. I think when just changing the multi and nothing else the change is too drastic.

And A64 tweaker will occasionally lock mine up when making timing changes. I make most all timing and divider changes in bios unless I want to use one of the custom settings in A64 tweaker thats not available in bios.

And like the others said your timings are too tight for that speed. My OCZ TCCD will run up to 230mhz and no more @ 2-2-2-5 but I have to give it 2.95-3.00 volts:shocked:, but I can run 2-3-2-6 up to 240mhz with 2.85v

 

[xtknight]

Originally posted by: GuitarDaddy
I have the same board, and it doesn't play nice with the windows O/C utilities. AI booster and nTune are especially bad, I've gotten to where I don't even use them. Clockgen is better, I have no problems adjusting HTT with it, but it will occasionally crash when making a multi change.

If your going to change multi with clockgen, make an offsetting change in HTT at the same time, if you up the mult bring the HTT down some. If you drop the multi bring the HTT up some. I think when just changing the multi and nothing else the change is too drastic.

And A64 tweaker will occasionally lock mine up when making timing changes. I make most all timing and divider changes in bios unless I want to use one of the custom settings in A64 tweaker thats not available in bios.

And like the others said your timings are too tight for that speed. My OCZ TCCD will run up to 230mhz and no more @ 2-2-2-5 but I have to give it 2.95-3.00 volts:shocked:, but I can run 2-3-2-6 up to 240mhz with 2.85v

well yeah what I did was I adujsted the multiplier then hit Apply FID so the CPU speed indicator would update. So when you change the FSB I couldn't see what my CPU speed was while adjusting FSB, until I applied the multiplier. i could always manually multiply it with calc though. thanks for the data...i'd rather not touch any voltages though. 30 MHz for one CAS setting increase is worth it. the extra 30 MHz will cancel out the increased CAS setting by a large margin, right?

one more question: forgive me if i sound like a noob, but why don't they make GDDR3 memory for PCs? the gddr3 overclocks like 150mhz on my graphics card without any bios hacks or memory timings changes. maybe the memory timings are just real high to begin with? and besides, isnt the memory on graphics cards (GDDR3) faster? not only that but it uses less power? is the only reason they don't make it because there are no GDDR3 supporting CPUs/mobos?