G.Skill Trident X F3-2400C10D-8GTX

[willg]

Hi
I was hoping some of the Guru's might be able to give me some advice on the memory kit in the title, which I have coming in the next few days.
It will be installed in a GB Sniper M3 Mobo with a 3570k processsor.

The Trident mem is rated 2400mhz 1.65v, but I have quite an effecient processor and would rather not have to raise the VTT or IMC to much. They are at 1.065v and 0.925v stock ratings at the moment running 1866 memory.

So I was looking to underclock the Trident memory at 2133 - 2200mhz, so it is hopefully no higher than 1.55 - 1.6v and, moreimportantly, without having to bump the VTT and IMC too much.

Does anyone have experience with underclocking this memory to a nice performance/efficiency compromise - enough to give me a ballpark area to start with my BIOS settings?

Thanks for your help

[emissary42]

Start at

DDR3-2133 10-11-11-27 @ 1.6V / 1.55V / 1.50V. For VCCIO and VCCSA start with AUTO voltages and then reduce them manually if stable.

Then try for

( 10-10-11-27 if single sided)
9-11-11-27
9-11-10-27 / 9-10-11-27 (dual sided / single sided)
9-10-10-27
9-10-9-27 / 9-9-10-27
8-10-9-27 / 8-9-10-27 (dual sided / single sided)

If you get down to CL8 with 1.6V it may be worth it vs CL9 @ 1.55V. Decide that yourself / based upon actual performance.

[willg]

Thanks for the tips Emissary42. Appreciated.
In general does the VTT and IMC voltage have to be raised much above stock to run 2133 and higher on 3570k?
Or is it just silicon/chip dependant?
I'm not overly concerned about running the Ram at 1.6-1.65v but would like to keep the CPU voltages down.

Anyone else with any experience in regard to OP?


P.s. whats the best program for testing stability quickly (currently on Windows 8)

[GSKILL TECH]

Not much , generally about +0.05V to +0.1V. It is solely dependent on the CPU. For stability, look for a stress test supported by Windows 8 such as Prime95.

Thank you
GSKILL TECH

[willg]

Ok, Thanks. The extra 0.05v - 0.1v is that for VTT or IMC or both?

(The memory wont be arriving in the post till next week, but i'll post my results when i get them)

[emissary42]

I had a 3570K that even did DDR3-2400 at stock VCCSA & VCCIO. Don't worry too much about 2133

[willg]

I had a 3570K that even did DDR3-2400 at stock VCCSA & VCCIO. Don't worry too much about 2133

Seems that's pretty much the case with my 3570k too

2400mhz 1.64v VTT @ 1.080v and IMC @ 0.935v.

So pretty happy with that overall.

Thanks again for your input guys.

[willg]

Down to 9-10-11-27 @ 2400mhz 1.65v.

1.080 VTT and .940v IMC.

It's noticibly quicker.

Thanks for the numbers emissary42.

[emissary42]

Getting DDR3-2400 CL9 out of F3-2400C10D-8GTX is actually a very good result!

The voltages also seem to be about right.

[NIK1]

Hey,Willg,I have the same ram as you. I have had it for a week now and the best I could do with my sabertooth Z77 board and I5 3570k is 2400 @10 10 12 27 1T.Are you running 1T or 2T,and what's your vccsa set to if you don't mind me asking. I also have tried 2200 @ 9 9 11 27 1T and it works pretty good.

[willg]

Hey Nik,
As I posted above my IMC is at 0.94v - I believe this is the same setting as Vccsa (different brands - different names)
The ram is running at 9-10-11-27-1t @ 1.65v. So it seems I may have been lucky there.
Vtt (or vccio) is at 1.080.

This is on a Gigabyte z77 Sniper M3 board. Nice board once it had a functioning BIOS.
I wouldn't recommend GB boards though, because they are extremely tardy with issuing updated Bios's (if you get an update at all) and even then they usually don't work right.
I use a custom - updated Bios made by enthusiasts. Otherwise the board would be useless with the official latest Bios.

[NIK1]

Hey Willg,what do you have your 3570k oc to, or, do you run it stock.And with how much volts if ya don't mind me asking. I am running 16 gigs,2-8 gig sticks. My processor oc is 4.5 with about 1.208 to 1.216 volts.I can not seem to get 2400 @ 9 10 11 27 no matter how many volts I try.

[willg]

I'm running 2 x 4gig sticks, so that may be an influence - or I just lucked out with the sticks.
I'm oc'd 4.6 @ 1.18v though I have got an occasional WHEA 'event id 20' error at that voltage, but it's so rare that I stick with it.
Can't even find anything to tell me what an event id 20 is? Would be nice to get rid of that error though.

[emissary42]

I am running 16 gigs,2-8 gig sticks. I can not seem to get 2400 @ 9 10 11 27 no matter how many volts I try.

Only a very small percentage of all DDR3-2400 CL10 specced modules will do that and an even smaller number will need less than 1.75V for it. So don't worry, he was very lucky with his kit. Try 10-11-12-27 @ 1.65V first, then go for 10-10-12-27 and 10-10-11-27 if your still stable (as always lower voltage afterwards).

[NIK1]

At 10-10-12-27 1T I am stable running prime,at 10-10-11-27 1T errors pop up quickly. Do you think upping the volts from 1.65 would help stable it.Also I have vccsa volts at 1.0000.