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1.475 - but only running 2T

I find on my mobo with current bios that 1T is fine in memtest86+ with a small bump in volts but not stable over long encodes etc - didn't bench much different either

running 10-11-11-26-2T
 
Ah that might be it, I've had timings set manually to 1T. Probably been too stubborn about that as it used to make such a big difference in the past - will give 2T a try.
 
give it a whirl :) let me know if you notice a big difference vs 1T thought and I'll try and get my 1T stable ...

to be fair to the Samsung - getting 1T stable does require a reasonable bump in volts (about .3V more than 2T) - but getting mobo stable at 1T is far more difficult - it'll be stable then just randomly blue screen out

I boosted VCCSA and VCCIO too - yet 2200 CAS10 only needs these at stock, and mem at lower volts, so it seemed not worth it for 1T

:)
 
wazza300 said:
are you using latest mb bios? ive seen these sticks run at 2133mhz on gigabyte z77 boards 8gb with 1.55v dram voltage

tried with 1.10v cpu vtt?
Click to expand...

Thanks for the suggestions. Tried 1.1v vtt and 1.1v Imc with 1.6v dram, was memtest stable without error for 10hrs yesterday. Testing now to try and drop the vtt and Imc voltages. Least I know my Samsung sticks aren't duff and do OC :)
 
dont be scared to up the dram voltage,i needed atleast 1.55v for 8gb cas 10 and it timings,with 16gb i needed 1.62v dram

cpu/vtt or qpi/vtt can use upto 1.2v but around 1.10v is usually needed
 
While it turns out my new 3770K is a decent clocker, the IMC ain't great by the looks of things.

Was able to run this memory at 2133 11-11-11-28-1t on X79 board with just 1.425V, but on this I tried similar settings, al the way up to:
1.5V DRAM
11-11-11-28-2t
VCCIO at 1.2V

but would will fail ibt very high on second pass without fail.

Was hoping to hit 2133, but not looking possible. Would I likely need to up the dram voltage even more?

Just seems odd, knowing that it is quite capable of doing 1.425V on another platform.

Or could it be my z68?
 
I have a similar experience, my RAM does not seem to clock as well for some reason without significant volts. Could well be IMC if your CPU is the only change, could also be 2nd/3rd timings need adjusting.

1.425 for 16GB at that speed does look like low voltage compared to settings that other people have posted
 
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eyetrip said:
While it turns out my new 3770K is a decent clocker, the IMC ain't great by the looks of things.

Was able to run this memory at 2133 11-11-11-28-1t on X79 board with just 1.425V, but on this I tried similar settings, al the way up to:
1.5V DRAM
11-11-11-28-2t
VCCIO at 1.2V

but would will fail ibt very high on second pass without fail.

Was hoping to hit 2133, but not looking possible. Would I likely need to up the dram voltage even more?

Just seems odd, knowing that it is quite capable of doing 1.425V on another platform.

Or could it be my z68?
Click to expand...

Z68 is not great for RAM clocking mate, especially with full dimm population. Also the 3 series ASUS bioses supporting Ivy on Z68 are very immature. They are being worked on as we speak.

Having said this 2133 should be fine with two DIMMS.
 
covenantuk said:
I have a similar experience, my RAM does not seem to clock as well for some reason without significant volts. Could well be IMC if your CPU is the only change, could also be 2nd/3rd timings need adjusting.

1.425 for 16GB at that speed does look like low voltage compared to settings that other people have posted
Click to expand...

Your correct in this secondary timings and third timings play an important role in stability. Also the correct timings for one platform do not apply on another as the IMC's are totally different architecture.
 
8 Pack said:
Z68 is not great for RAM clocking mate, especially with full dimm population. Also the 3 series ASUS bioses supporting Ivy on Z68 are very immature. They are being worked on as we speak.

Having said this 2133 should be fine with two DIMMS.
Click to expand...

Oh well, will try and get around 2000 with 10-10-10-28 (roughly) and live with that, and see if future bios updates improve things.

Not really going to notice much of any difference
 
need more testing but atm the Samsungs seem more stable with the new 0903 bios for the Gene V @ 1T than they were before :)

currently running 2200 11-11-11-26 @ 1.53V 1T
 
eyetrip said:
Oh well, will try and get around 2000 with 10-10-10-28 (roughly) and live with that, and see if future bios updates improve things.

Not really going to notice much of any difference
Click to expand...

Dude, just an FYI.
I'm sitting at 2000MHz @ 8,9,9,21 1T @ 1.62v

I would advise you try and tighten those timings if you can't push the frequency.

I think i'm going to go back to BCLK 100 and move on up to 2133MHz... I can't seem to leave it alone!
 
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Rossi~ said:
Dude, just an FYI.
I'm sitting at 2000MHz @ 8,9,9,21 1T @ 1.62v

I would advise you try and tighten those timings if you can't push the frequency.

I think i'm going to go back to BCLK 100 and move on up to 2133MHz... I can't seem to leave it alone!
Click to expand...

Yeah, but you're on x79 - I am back on a plain old z68 :D

I can live with the 2000 for now. Got it at that with 1.475V.

If future BIOS improves things, then awesome, but at the moment I am not not sure I will try new BIOSes, as my chip is running to bloody well on current.
 
eyetrip said:
Yeah, but you're on x79 - I am back on a plain old z68 :D

I can live with the 2000 for now. Got it at that with 1.475V.

If future BIOS improves things, then awesome, but at the moment I am not not sure I will try new BIOSes, as my chip is running to bloody well on current.
Click to expand...

You're mainly limited on frequency, you should still be able to tighten the timings.

You need to get a Z77 board mate, or return to X79 :D :p it's a load of fun.
 
more experimentation

2200 10-10-10-24 1T seems fine and stable @ 1.55V

CAS9 at 2200 at voltages (sub 1.57) that I am happy with seems a no go - as does 2400

so anything else I can tighten up on current settings please ?

2200-10.jpg


2200-10.png
 
Rossi~ said:
You're mainly limited on frequency, you should still be able to tighten the timings.

You need to get a Z77 board mate, or return to X79 :D :p it's a load of fun.
Click to expand...

I have been toying with the idea of Z77 sabertooth, but pretty much the only benefit I MIGHT see is faster memory speeds - and what will that really do for me at the end of the day?

I can run my ram at 2000-10-10-10-28-1t with 1.55V, or I can drop down to 1866 9-9-9-27-1t with 1.45V

Sure, I might get it up to 2133, or maybe 2400, but there is always the possibility that the sabertooth I end up with will actually clock my 3770 worse than my current board.

I mean I am running 5GHz with 1.3V - I am hesitant to risk losing that :(
 
Been following this thread for a while but not posted yet, I've had the RAM for a few weeks now and I've started to experience a few issues.

Please ignore the RAM clock in my sig as its now back to stock, while the RAM was clocked to my sig spec I starting getting a few BSOD (0x1000007e, 0x0000003b, 0x00000050, 0x0000000a) all I believe are related to RAM issues? Also a few games crashed back to windows with different relating memory issues...

Since I've clocked back to stock (1600 11-11-11-28 1T) I've not had any issues, volts were set to 1.53 for the oc, but I didn't alter anything else.

CPU Vtt and PLL are set to auto (1.05 and 1.8) do I need to give these a little boost to try and get a stable 2000 10-10-10-28 oc???

Just looking for a few pointers, I've tried running mem test 86 but it wont run from countless CDs I've burnt? the built in mem test for my mobo seems to be a bit temperamental....

Cheers

CaNNoN
 
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