Ram divider/overclocking question!

beast

beast

beast

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10 Apr 2004
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909
My FSB of my 6600 is 340, and my RAM divider is set at 2, giving the RAM speed 680MHZ. but it's rated for 800MHZ. If I set the divider to 2.5, that gives 850mhz, however the System fails to start wtih this setting.

How can I increase my RAM speed, or do I just have to leave it at 680mhz? I do not wish to overclock the chip any more.

Oh finally, if I set the RAM speed to auto, it sets it as 800. Can I leave it on auto with an o/clocked CPU?
 
Are you giving the RAM 2.1v (+3)? Try running it at 2.2v or loosening the timings slightly.
 
Have you tried 400x8? That would give you 3.2Ghz and let you run your ram at 800 at 4-4-4-12.
 
Sorry to sound thick, the "8" in the equation, is that the figure that is currently "9" (default for the 6600) in my motherboard?! I think it's called the multiplier?!
 
beast said:
Sorry to sound thick, the "8" in the equation, is that the figure that is currently "9" (default for the 6600) in my motherboard?! I think it's called the multiplier?!
Click to expand...

Yeah he's talking about the multiplyer. Lowering it to 8 will give you room to higher the FSB.
 
Cob = LEGEND!!!

Ram is now bang on 800mhz and running 4,4,4,12 timings, and the 6600 is at 3.2gig on standard volts. It's just what I wanted :D thanks mate!
 
Good stuff.

Now run the Orthos blend test overnight to be sure that it's stable. Tho you shouldn't have any problems with those settings.
 
Cob, sorry have you got a link to a site with the orthos blend? I have downloaded but encountered probs. I'd like to try again. Muchos thankos !
 
Spoke too soon :( I tried a re-boot because usually if it doesn't like the setup, rather than re-boot, it will turn itself off, then try to power up 3 or 4 times before putting the FSB/RAM speed back to default.

It's just done this with the RAM at 800MHZ 4,4,4,12 + 3.2 gig cpu. It is definetly the RAM at fault because if I slacken the timings to 5,5,5,18 it runs fine, reboots no problem.

Is the geil 6400 not guaranteed to run 4,4,4,12 @ 800mhz??!
 
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