8 Packs 4ghz 32m Challenge win full Haswell 4770K Bundle.

I'm on AMD so my tRFC options are 90,110,160,300 or 350ns and I can't load the XMP profile. I'd have though if SuperPi fails before even reaching the initial value then memtest is going to fail too?

I can try it in the MA78-LMT board in my server and see if it will run @ 1600mhz
 
I've emailed mushkin about the ram, need to run memtest on both sticks for them, as I've already tried all of they're suggestions. I'm hoping I can RMA them if they are faulty, but I might not have much luck as u don't have an invoice.
 
My Trfc options are totally different 8 Pack? Is it be because I'm using an AMD board going to try it in my other board as well as the local pc shop have said I can pop in a see if it'll boot at the rated timings. Mushkin have said it's more than likely faulty modules though.

Edit: I tried 90,110,160 and 300 yesterday and it was still flaky.

Edit edit: both sticks pass 3 passes of memtest at 9-9-9-24 and will do at superpi run with everything stock and the memory at 7-8-7-24. Still fails to boot at 6-8-6-24 though.

If it try 7-8-7-24 with both sticks of ram then it fails to boot so I'm guessing this is imc related?
 
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Problem solved. Well sort of, the ram is fine in my servers motherboard, although I'm not sure if benching with a Gigabyte 78LMT-S2 is going to be a good idea
 
Need to find yourself a new motherboard then? Although i'm also a big gigabyte fan, there's no denying that the top end asus boards will probably perform better with that ram.

I'm going to revisit mine in a few days now i've realised that i forgot about adjusting those sub timings. I have my doubts about it getting me anywhere as i was right on the verge of stability as it was.
 
Giga does well with PSC BBSE on AMD. Well it did for me for HWbot Vantage team cup.

I RAN 2200+ C7-9-7-18 1T. I think the ASUS Crosshair is the best AMD RAM clocker though.
 
8 Pack said:
Giga does well with PSC BBSE on AMD. Well it did for me for HWbot Vantage team cup.

I RAN 2200+ C7-9-7-18 1T. I think the ASUS Crosshair is the best AMD RAM clocker though.
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Was that with a deneb phenom, a thuban or piledriver/bulldozer? I've not seen many deneb based systems clock much past 1800mhz. Mine doesn't seem inclined to get past 1700mhz. I am on the older AM3 790FX board though which may well make a difference.
 
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Phew... about done on these Samsung Greens I think and the TeamGroup memory is calling to me from it's packaging :)

Managed 8m11.969s - after tweaking tertiary and secondary timings... anyone know what tCKE does and if it makes much difference? I had to raise mine to 10 in order to reduce tRAS and tRFC. Must resist tweaking by raising some timings to reduce others or I will be still tweaking this time next month :)

gVlEm8Ql.jpg

Lord_ZED - how did you manage to get below 8m10s!!! - I'd love to know your secret tweaks ;) some of my timings are tighter but guess maybe some of my optimisations are off?

Did you start with fairly loose timings? Only problem I find with that is then some of them cannot be reduced, so guess there must be certain ones to loosen and not others.

I have run through most of the tweaks mentioned earlier in the thread (512mb page file, reduce available memory to 600mb for bench and large system cache, kill all processes apart from super pi etc....) I even tried the CDT method last night (still not sure if I'm doing it right) but I think it gave me -2 seconds :) so happy with that.

Might have another go with tCKE and tWCL later as they are still high after loosening the timings...
 
@dlknight did you try raising trefi? had mine to about 7800 I think, help keeps the usable memory window between refreshs open. I also lowered the tWR (even numbers seem to work best). Try to get tFAW to just over 4 x tRRD (e.g. if tRRD = 5, then set tFAW to 21).
 
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Sir SpankalotUK said:
@dlknight did you try raising trefi? had mine to about 7800 I think, help keeps the usable memory window between refreshs open. I also lowered the tWR (even numbers seem to work best). Try to get tFAW to just over 4 x tRRD (e.g. if tRRD = 5, then set tFAW to 21).
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Thanks Sir SpankalotUK :) - just found this guide below which is pretty good -

http://rog.asus.com/136402012/maximus-v-motherboards/maximus-v-formula-overclocking-guide/3/

I didn't change TREFI but will take a look - the MSI Control Center doesn't let you change it in Windows but will have a go at changing it through the UEFI BIOS or CPU Tweaker :)

Will set tCKE back to Auto and then have another bash with those and your recommendations :) also going to try some other tweaks in Windows.... hint I see a ramdisk shortcut on someones desktop :D
 
8 Pack said:
With Samsung TWL can be 6 or below at these speeds and TCKE can be 4.
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Thanks 8 Pack - I set both to auto last night and it wouldn't complete 32M :( - tCKE = 6, not sure what TWL was set to.

I tried raising the tertiary timing to 5 and 6 and still wouldn't complete so I'm guessing my tCL, tRCD, tRP and tRAS are too aggressive? I raised ram voltage to 1.7v but still same result.

I also put Super PI onto a ram disk but only gave me a reduction of a few hundredths of a second :D

I may have another go over the weekend but time is running out and need to test out the TeamGroup memory and Ivybridge CPU I acquired ;)

So do we have anymore surprise results or are people holding entries back until next weekend?? ;)
 
You would be better with 9-11-11-18 and TWCL Tight mate. Also with these speeds on SB you will probably need IMC volts to run the timings not just frequency.
 
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