Whist upgrading my current rig I'm looking at possibly upgrading my current 4B 1600 CL9 RAM to something with tighter timings and better cooling.I note from Nicks setup guide that he recommends at least CL7 at 1600, preferably CL6. In reality, do these timings make much (any) difference? The articles I have seen on the web suggest 2-3% increase at best?Anyway, if I am to upgrade, which of the following would you suggest based on my i7 860 211BCLK O/C?(7-7-7-20, 1.65V, XMP, Airflow Fan, £123) http://www.overclock...-Kit_33363.html (7-8-7-20, 1.65V, XMP?, £65) http://www.overclock...-Kit_33360.html(6-8-6-24, 1.65V, £75) http://www.overclock...rodid=MY-201-OCHow important is the last figure in the timings (-20, -24) compared to the others (-6, -7)? and do I need XMP or is it easy enough to set yourself (like I say, I O/C the CPU anyway)? As a slight aside, if in future I used TrackIR and FRAPS presumably they would require more RAM? Would it then be better to go with a (slighty slower) 8GB setup?As always, any help / advice / experiences are much appreciated!

I suggest buying 2x Mushkin Redline (or Radioactive) 4GB 1600MHz CL6 (6-8-6-24) kits. Extremely low latency, fast and really reasonable prices.

Thanks Chris, i know many here use some form of those Mushkin but unfortunately they are impossible to get hold of over here....and are just the same timings as the last option above?I'm keen to understand why / if the 6-8-6-24 timings are "much" better than the 7-7-7-20? Is it just the CAS latency we are interested in or, does RAS latency come into equation too, in which case the "slower" CAS 7 module may be the more balanced? Also like to know if if 4GB of 6-8-6-24 is better for FSX, Fraps and Track IR than 8GB of 7-7-7-20?

Thanks Chris, i know many here use some form of those Mushkin but unfortunately they are impossible to get hold of over here....and are just the same timings as the last option above?I'm keen to understand why / if the 6-8-6-24 timings are "much" better than the 7-7-7-20? Is it just the CAS latency we are interested in or, does RAS latency come into equation too, in which case the "slower" CAS 7 module may be the more balanced? Also like to know if if 4GB of 6-8-6-24 is better for FSX, Fraps and Track IR than 8GB of 7-7-7-20?

I would keep what you've got, you're right about the 2-3% increase, that's all you'll get.for FSX 8GB is useless. It's a 32b application anyway

I would keep what you've got, you're right about the 2-3% increase, that's all you'll get.for FSX 8GB is useless. It's a 32b application anyway

Thanks Dazz.....you've just saved me some money to get soemthing else instead I know FSX won't utilise the 4GB I already have but if I had Track IR and FRAPS running as well, would the extra 4GB benefit me? Sorry, but I'm still not fully "educated" when it comes to this kind of thing so don't know if those programs are also 32 bit or indeed, if it makes an iota of difference!? Is it just 64 bit apps that make use of the extra RAM no matter what other apps are running?