faster / tighter

capriboy1978

capriboy1978

capriboy1978

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can anyonew give me the laymans overview on ddr3 ram timings and speeds please? Is slower speed with tighter timings better than the reverse or is the sweet spot to be had with a balance of the two? Where should that balance be?

I've been messing with OC my RAM now i've got my head round i7 OC. I have ocz reaper 1866 rateed at 9-9-9-21 iirc. At current settings (180x21) i've got the ram running at 1444 odd. I've tightened the timings using stock volts down to 7-7-7-20 but strangely IBT runs are slower and the GFlops is lower the tighter I get - the opposite to whjat I expected. Each time I tighteened the ram 9 to 8 to 7 I tested stability using ibt and noted the speeds and each time the runs got slower.

Am I missing something obvious here?
 
Ok to get this out the way... bad choice of a title!

the tigher the timings, the overall system performance will increase, so fiddle around until you are happy with the performance. it appears u are doing this correctly however.
 
It's not the article I was looking for, but it's from the right site. Madshrimps.

Iirc it doesn't matter very much. Triple channel bandwidth is ludicrous enough for a single processor that more speed/better latency doesn't mean much. There's a much better article on there about memory on the X58 platform but I can't find it
 
I remember paying a load of money to "upgrade" myself from CAS3 ram on my S939 X2 to CAS2

No change, a very small change in benchmarking results but absolutely no noticeable change in performance.

Mind you thats been the same with any memory overclocking/tweaking I've done.. benchmarking changes but only slight and no noticeable real world effect.
 
thanks, slackening the timing back to stock and going for highest stable clock to see where that goes. After that will stock sppeds and timings and see if I can drop much voltage.

It might be me but the system 'seems' to boot quicker relative to the tighter timed ram (when it's stable that is).

Thanks for the link, will peruse it later.
 
Hey man. I've got a better link for you courtesy of Anand. The conclusion is that 1333 C6 is roughly where you want to be.

I like this as it's probably where I'm going to end up. I'm struggling to get over 4.2ghz at present, so I'm leaving the memory at x6 to help hit a higher cpu clock. Then lower latencies as far as possible, hoping to get c7 stable at around 1320mhz. Bloody machine keeps freezing though.

Cheers
 
Thanks Jon, have given up for now, P08 bios is a load of carp. y ram has a jedec profile at 6-6-6- somrthing at 1200mhz or thereabouts so 1333 odd should be within reach. Interesting that the lower latency wins through just like ddr2 and the rest.
 
capriboy1978 said:
Thanks Jon, have given up for now, P08 bios is a load of carp. y ram has a jedec profile at 6-6-6- somrthing at 1200mhz or thereabouts so 1333 odd should be within reach. Interesting that the lower latency wins through just like ddr2 and the rest.
Click to expand...

What is good ram to get to run at 1333Mhz C6 or even 1800Mhz C6?
Especially as ram prices seem to have gone up a lot over the last week, and will probably continue to rise.
 
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