Memory tweaking experts, advise please

[tipes]

Hi all,

Have never really bothered to tweak ram timings in the past, but I have just got myself a nice kit to go with my Z87-OC board:-

http://www.gskill.com/en/product/f3-2400c9d-8gtxd

I am currently running this ram at 9,11,11,31 1T @ 1.65V all is working well, and seems pretty snappy. I was wondering though whether I would be better to run it at 2133Mghz and tighter timings - would give better overall performance?

Can anyone give me a starting point as to what timings I could try etc.
Many thanks

Mark

 

[Rroff]

Depends what your doing some tasks and setups gain more from different combinations of timing and frequency than other stuff - as a general rule with current Intel CPUs then 4 core (with or without HT) and single GPU or even 2 GPUs on 115x stocket boards 2133MHz CAS9 will give the most balanced performance. (EDIT: 2400 CAS9 though will be so close as makes no real odds).

If your running more cores and/or high end multi GPU you can take advantage of higher RAM frequencies but often once your upto around 1866+ with decent timings performance gains drop off a lot from higher frequencies.

 

[tipes]

Depends what your doing some tasks and setups gain more from different combinations of timing and frequency than other stuff - as a general rule with current Intel CPUs then 4 core (with or without HT) and single GPU or even 2 GPUs on 115x stocket boards 2133MHz CAS9 will give the most balanced performance. (EDIT: 2400 CAS9 though will be so close as makes no real odds).

If your running more cores and/or high end multi GPU you can take advantage of higher RAM frequencies but often once your upto around 1866+ with decent timings performance gains drop off a lot from higher frequencies.

Thanks for your reply - seems as though from what you are saying that there won't be much point in trying to tune as I am already running at cas 9 at 2400.
Am i reading you correctly?

Mark

 

[Rroff]

Not saying don't bother to tune as such but don't get too hung up on it as with current Intel CPUs once your running 1866+ MHz with decent timings your running into fairly significantly diminishing returns from higher speeds so anything around 1866 with decent timings through to 2400 CAS10 will largely give very similiar performance.

The sweet spot tends to be around about 2133 CAS9 or 2400 CAS9/10 depending a bit on what your doing and neither will be significantly slower/faster than the other.

 

[tipes]

Not saying don't bother to tune as such but don't get too hung up on it as with current Intel CPUs once your running 1866+ MHz with decent timings your running into fairly significantly diminishing returns from higher speeds so anything around 1866 with decent timings through to 2400 CAS10 will largely give very similiar performance.

The sweet spot tends to be around about 2133 CAS9 or 2400 CAS9/10 depending a bit on what your doing and neither will be significantly slower/faster than the other.

Ok - I certainly won't get hung up on it, this is really more about me learning more, and experimenting really. What I could do with knowing is a starting point at 2133 for example. Should I try 8,10,10,28 or something like that - where do I start?

Your help and input is very appreciated btw.

Mark