How do you o/c your ram?

[AkumaX]

So how would you go about o/cing it to lower timings one step at a time? Which one is more important towards performance/stability. Let's say you have 2.5-3-3-7-2T ram.

Here's an example:

2.5 =>2 .... 2 .... 2 ..... 2
3 ...... 3 .... 3 .... 3 ..... 3
3 ...... 3 => 2 .... 2 ..... 2
7 ...... 7 .... 7 => 6 ..... 6
2T ..... 2T ... 2T .. 2T =>1T

Let's just say I hit a wall there. But is that how you would do it?

 

[CheesePoofs]

What is your system? A64 or P4?

The most important thing to lower is 2T to 1T, assuming your using an A64. Then you'd want to lower the CAS Latency. After that, I don't really know.

 

[AkumaX]

Originally posted by: CheesePoofs
What is your system? A64 or P4?

The most important thing to lower is 2T to 1T, assuming your using an A64. Then you'd want to lower the CAS Latency. After that, I don't really know.

Yeah it's an A64 (this round ) I read somewhere going from 2T to 1T makes a bigger difference w/ 1 stick of ram than 2 sticks in a S754 environment. Yeah, after CAS, then what?

 

[Fern]

Check out THIS thread. Trend looks like it doesn't much matter

 

[Rikshaw]

Holy Grail of RAM

and
Timings Explained

also
DDR Overclocking Basics

 

[AkumaX]

Originally posted by: Rikshaw
Holy Grail of RAM

and
Timings Explained

also
DDR Overclocking Basics

thanks!! that 1st link was most helpful, because the answer to my question is this:

CAS is not most critical of the various timings, unlike what is taught by many and what RAM sells try to market. In general, the importance of CAS when placed against tRP and tRCD is nominal. Reducing CAS has a relatively minor effect on memory performance, while lower tRP & tRCD values result in a much more substantial gain. In other words if you had to choose, 3-3-2.5 would be better than 4-4-2.0 (tRCD-tRP-CAS).The value of tRCD most often accounts for the biggest hit in performance if increased, followed by tRP, then CAS. So if you need to loosen RAM timings in hopes of achieving a higher clock, it is recommended and accepted that you increase the value of CAS first, then tRP, and then finally tRCD.