Cannot start X.M.P profile for TridentZ F4-3400C16Q-32GTZ on ASUS X99 Sabertooth MB

[ViperAleks]

I cannot start X.M.P default profile for TridentZ F4-3400C16Q-32GTZ on ASUS X99 Sabertooth MB with i7-6950X processor. I think i7-6950X processor has a DDR4 memory limit 2400/2133. I have set X.M.P profile to its default and then changed DRAM Frequency to 2600. It works fine and passes the stress test. My question is next. Did I overpay for these extreme memory modules which I cannot use for their full power? Is there a way to OC processor and memory to exceed these limitations? Which parameter should I try to change first to overclock this processor in combination with this memory?


Thank you!

My system:
i7-6950X 25M Broadwell-E 10-Core 3.0 GHz LGA 2011-v3 140W
ASUS SABERTOOTH X99 LGA 2011-v3 Intel X99 SATA 6Gb/s USB 3.1 USB 3.0 ATX Intel Motherboard
G.SKILL TridentZ Series 32GB (4 x 8GB) 288-Pin DDR4 SDRAM DDR4 3400 (PC4 27200) Model F4-3400C16Q-32GTZ
Corsair Hydro Series H115i Extreme Performance Liquid CPU Cooler. 280mm CW-9060027-WW
Corsair CC-9011078-WW 750D Airflow Edition Black Computer Case
EVGA 220-P2-1000-XR 80 PLUS Platinum 1000 W
SAMSUNG 850 EVO 2.5" 500GB SATA III 3-D Vertical Internal Solid State Drive (SSD) MZ-75E500B/AM

[Erixx]

I have the same questions! It would be nice if GSKill provided more than 1 (maximum settings) XMP profile like competitors do.

I cannot run max settings from XMP but do not want to run minimum settings of Intel spec. In between 2133 mhz and 3800 mhz (my XMP) there are too many possibilities!

[emissary42]

Some X99 mainboards struggle with memory ratios beyond DDR4-3200 and even that might already be too high for auto settings. I don't own a Sabertooth X99 or any LGA2011-3 system, but the actual settings for DDR4-3200/3400 can vary, depending upon what combination of strap, BCLK & memory ratio has to be used.

In any case this is probably more of a MB & configuration than a CPU issue, so don't worry about the 6950X only being specced for DDR4-2133/2400.

For a quick test manually set the XMP timings and try lowering the memory ratio until the system POSTs. Do a quick stability test and afterwards tweak the timings and adjust voltages if you want to, then do a full stability check.

[ViperAleks]

I have ended setup with 3000 memory frequency. 3200 is not stable. I have no idea what strap, BCLK & memory ratio has to be used for this memory to be honest.

[emissary42]

How to set it up does not matter for the memory, but depends on the mainboard and what combinations are actually working on it. The TUF models are usually a step or two behind the ROG ones in supporting higher speed memory, but you could try to ask the ASUS support about what settings to use. Maybe they do have an updated BIOS for you with improved memory compatibility, it is worth a shot i guess.

[GSKILL TECH]

With XMP enabled, if the system is unstable, lower DRAM Frequency and test until the system is stable. That is what your hardware combination is capable of. From there you can troubleshoot to see what's going on, if you think it is capable of better, or you can leave it as is. The key is to have a base point and then you can test certain things to maximize performance.

[lilchronic]

Are you on the latest bios 3101 ?

Also i would try adjusting the system agent voltage slowly increasing to about 1.15v should be enough.
if not up to 1.25v system agent would be max in my opinion.

[Erixx]

Thank you all! I have not started touching secondary voltages like SA.

I have been running 3200 Mhz for months, but sometimes system does not boot and board LCD always shows a "b6" or "b9" code which is RAM related, and I also have played with UNcore multipier (44x) which gives amazing RAM benchmarks like 70.000 in all 3 columns in aida)

So I think I am nearly there. Main mistery is regarding timings: 16-16-16-34 or 16-18-18-38 etc... or maybe I am missing something.

Again, thanks for helping with this special case!!!!!!

[GSKILL TECH]

You can try lower timings to see if it can be stable for 3200. Increasing DRAM Voltage can help improve that as well.