RAm speeds w/ OC

[LoD]

Re: RAm speeds w/ OC

Oh and to find your type of memory you probably need to hit google or some hardware forums and put the exact model and revision number into the search.

Twinx ram could be any number of different chips, and judging off the newegg reviews this ram is only mediocre for overclocking. Your best bet is loosening the timings or running a divider, or both.

[sackynut]

Re: RAm speeds w/ OC

You need to change your tCAS to 2.5. Ram frequency is determined by CPU/divider. The divider is determined by the cpu multiplier and memory frequency setting.

okay so, this would then do what by chaning it to 2.5?

[i made you]

Re: RAm speeds w/ OC

okay so, this would then do what by chaning it to 2.5?

Allow the ram frequency to be increased to at least 230MHz.

[sackynut]

Re: RAm speeds w/ OC

woa ^, okay thanks. so, how? like why does it do that? also, what about other timings, its 2-3-3-6 now, so if I made it 2.5-3-3-6 would that theoratically still work?

also, TW, on that program, which things do I enter in where, to calculate it, and what is reference clock?

[LoD]

Re: RAm speeds w/ OC

woa ^, okay thanks. so, how? like why does it do that? also, what about other timings, its 2-3-3-6 now, so if I made it 2.5-3-3-6 would that theoratically still work?

also, TW, on that program, which things do I enter in where, to calculate it, and what is reference clock?

Reference clock is your FSB... put in 250 and enter your multiplier and CPU divider speed and you get the results.

[sackynut]

Re: RAm speeds w/ OC

okay thanks, using the program i figured out a equation that ALMOST is correct

nvm i was wrong

thanks, but also i made you, why does inscreading tcas to 2.5 help and do i need to increas the others?

[LoD]

Re: RAm speeds w/ OC

okay thanks, using the program i figured out a equation that ALMOST is correct

nvm i was wrong

thanks, but also i made you, why does inscreading tcas to 2.5 help and do i need to increas the others?

Low latency puts more stress on the ram, higher latency will allow you to reach a higher FSB.

I would personally raise your timings to 3-3-3-8 (probably the loosest you would want to go) then see how far you can OC. I wouldnt be suprised at all if you can reach... lets say 230mhz on those timings. But this is all academic until you start running some benchmarks, you very well could get better performance at DDR380 with tight timings, over loose timings at DDR480 for instance... its all going to depend on how high you can push your CPU.

[sackynut]

Re: RAm speeds w/ OC

oic..

I tried that equation TW posted manually, and I tried and retried. the first time, it didnt give me the correct speed instead of the speed its GOING to be, it told me the regular DDR speed.

the second time I did it (with different numbers) it was wrong...

[i made you]

Re: RAm speeds w/ OC

I've never used a program. Check out this ram table to get familiar with frequencies: http://oskarwu.myweb.hinet.net/A64Divider.jpg.

With memory timings info, you'll want to google something like "A64 memory timings." There's around 25-30 with AMD's memory controller, some being very important.