G.Skill TridentX F3-2666C11D-8GTXD DDR3-2666 Preview

[Shiranui Gen-An]

I just got in a 4x4GB kit of these from NewEgg for under $300 (used a 15% off coupon). They're double sided Hynix (xxxx2400). So far looks like they need to go over stock volts for 2800 C11 and they won't do 2400 C9 even with 1.70v.

[Shiranui Gen-An]

G.Skill must be feeling the pinch from the popular Dominator Platinum 2666C10 kits: http://www.newegg.com/Product/Produc...82E16820231594

[ihog6hog]

[Reefa_Madness]

Interesting to note that the Quad kit in OP has "2400" for the 5th-8th digits, but Dual kit is "1400" in the pic above. Wonder if that's a pattern?

[Shiranui Gen-An]

My kit is 12422400 and has the GSK markings on the ICs, but I'm pretty sure they're CFR PBC.

[Shiranui Gen-An]

I know a good IMC is required, but man does the Maximus V series make clocking memory easy.

[GMX]

To get 1300mhz on memory I had to drop to 2T. loosen secondary tertiary sub timings. Below SS is 250% memtest.
1333mhz fails to boot, I will try 1.65v+ again (dropping to 1.635v actually gave me more stability for 1300).



I don't know whether to increase VTT or VCCSA first?
My kit is 1400/x400 - Hynix.

edit: Forgot to try tRCD first... I'll try loosening that.

[andressergio]

I know a good IMC is required, but man does the Maximus V series make clocking memory easy.

yeah specially the Formula, the Extreme aint good as the Formula in my personal experience with Gskill TX 2666CL10 and 2800CL11

[andressergio]

To get 1300mhz on memory I had to drop to 2T. loosen secondary tertiary sub timings. Below SS is 250% memtest.
1333mhz fails to boot, I will try 1.65v+ again (dropping to 1.635v actually gave me more stability for 1300).



I don't know whether to increase VTT or VCCSA first?

My kit is 1400/x400 - Hynix.

1.20 VCCSA / 1.15 VTT / 1.655 VDIMM for what i know Hynix does not take lots of advantage of more volts like samsungs ICs

try it and report back !

Cheers !
Sergio

[GMX]

I tried 1.1vccsa (can only set 0.925v, 1.1, 1.2v on this mb) & 1.15vccio and up to 1.68vdimm.
Doesn't even POST. I think I will research some other memory settings on this mb and see what I can do as I think with what has been tried so far, it must be something else or limits met on IMC/mem prematurely (that's part of the game ). Some things I have left on Auto which I'm not sure what role they play such as MRC Fast etc.

[Shiranui Gen-An]

Binned some of my best CFR sticks for a 2800C12 run at 1.65V.

[Reefa_Madness]

D/S CFR like the ones that ihog6hog has pictured at post #228?

[Shiranui Gen-An]

And to think, I actually considered getting rid of these sticks because I was disappointed they won't do 9-11-10 at 2400

[IceB]

What voltage are you running them on 2933 ?

What bios settings / timings do you use ?

[Shiranui Gen-An]

1.75V on the memory. All the timings are in the Mem Tweakit screenshot (note that I only set the four primary timings and the command rate, everything else was on auto).

[XBrytanX]

1.675v

[aussie-revhead]

Mine fail nearly instantly at 2800 1.675v but seem ok at 1.700v, what is a safe voltage for IMC for 24/7?

Edit: nup it crashed at 1.700v too, which voltages help ram stability?

Edit: 1.725v fails pretty quickly too, back to 2666 .....

[XBrytanX]

I had similar problem on the beginning ..you have to bring down/balance your timings(Haswell) and see what they like (no other voltages were increased )

[aussie-revhead]

Which timings mate?

I increased system agent (asus) and it seems to have helped.

[Shiranui Gen-An]

Looks like I didn't even need 1.75v. 1.65 is enough for 32M at DDR3-2933 12-14-14-35-2T.

[XBrytanX]

@aussie-revhead
the last few I would play with is tWR,tFAW <-secondary and tWRRD_dr,tWRRD_dd,tWRWR,tWRWR_dr,tWRWR_dd<-tertiary,so find what works without touching this first

P.S. this how I did go about tightening timings on this but if you trying validate high frequency loose timings and voltage will help
EDIT; boot with XMP

[Shiranui Gen-An]

I thought CFR couldn't do these timings at all! This isn't stable by any means, but I have a crapload of BFR that won't even BOOT 2400 9-11-10. This was with 1.80v BIOS set.

[varand]

hi guys , this is my first post on this forum

here is my test results with this memory on haswell platforum

aida 64 2700mhz
tRDRD 4
tWRWR 4

read , write & copy up to 40k+



Aida 64 3000mhz cl 11-15-14-35 1T
tRDRD 5
tWRWR 4

47k write



3000mhz cl 12-15-14-35 2T hyper pi 32m passd at 1.65v



LN2 test results
mem -130
my Dual side CFR scale up to 3393mhz try MFR next time



http://valid.canardpc.com/s8ise4

[TaPaKaH]

Which week is that kit?
What sort of voltages can you get for 1333-1400-ish CL11?

[varand]

hi dear sam

Which week is that kit?

from sn? 1223 1400 which means hynix

here is my old tests with ivy

2800mhz CL 11-13-12-35 1T super pi 32m

VTT=0.980v
IMC=0.820v
VDDR=1.642v



3108mhz with i7 3770k

http://valid.canardpc.com/2647938

table of Frequency/voltage