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RAM Speed

post #1 of 7
Thread Starter 
I have a question;

I know that if you are trying to find the max speed for your FSB or your RAM or your CPU, then you just turn the other two way down and then push the one thing higher....for example, turning the RAM and Multiplier down so you can find the FSB.

When my HTT is set to 225mhz and the RAM is set to 1:1, the RAM runs flawlessly at 225mhz (DDR450)

If I push things further (HTT to 245mhz), and set the RAM to 166mhz in the BIOS, which clocks the RAM at around 200mhz, then I can't run Prime95 for more than a few seconds.

If the RAM was running at 225mzh on 1:1, the it should be running fine at 200mhz, right? (166) Does this mean that I can elimintate the RAM as the culprit as to what is holding me back???
post #2 of 7
I would say that right now you would have to consider your cpu as your limiting factor. If you are at stock voltage, the try bumping your vcore up just a tad and give it another whirl.
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post #3 of 7
More details please.
vcore @ _ ._ _v
vdimm @ _._ _v
memory multiplyer @ _x, Default is 5, use 4 up to about 250 and 3 for above 250-333MHz.
Chipset voltage @ _._ _v
Those voltages and multiplyers effect OCing stablilty

Setting to DDR333 or even DDR266 if necessary will help the RAM run stable if it can't match the CPU bus speed! But upping the vdimm and relaxing the timings could get your RAM to run higher speeds.
    
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post #4 of 7
Thread Starter 
The vcore I have had up to 1.6, but now at my current clock of 2.3 it is at 1.5

The Dimm is at 2.7
The Multiplier is at 4x

The RAM is ruuning at 460mhz right now completely flawless, but it wont go much further than that...it will max out at around 240. but when I step it down to 333 speeds, and up the CPU to something higher than 240, that is when prime95 wont last......and at this setting the RAM is only at like 200mhz.

I am about to sell this 3200 really cheap and order a 3700...maybe that will make me happy for now.
post #5 of 7
The vdimm could be upped a bit dependant on wht chips i uses.
Have you upped the chip set voltage a notch yet?
Do you know what chips the RAM uses and what are there timings?
    
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post #6 of 7
Thread Starter 
not sure about the chips, the timings by default are 2-3-2-5, when overclocked I loosened to 2.5-3-3-7...and it runs great. I did loosen them more when trying to push past 2.4 (3-3-3-8) But usning a divider takes the load off the RAM, right? Doesn't this mean that the RAM is not whats holding me back??

I think the CPU is just not one that overclocks that well.......but I am fairly new to all of this.
post #7 of 7
Hard to say with the RAM... some chips, very few, have been unfriendly at CAS3.
I see from your first post that you have the concept of finding each components max.
2 things to try.
1 A64 tweeker for the RAM.
2. http://math.gogar.com/athlon64.cgi

there is a link to many good softs here.
http://www.overclock.net/faqs/38169-...roduction.html

You CPU is rather odd in that I've only found 1 LBBWE 0519 Venice that was maxed at 2400, all the rest did 2500 or more.
    
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