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Overclocking RAM on Sabertooth X99

This is about where I maxed out (different board)

capture.png
 
My RAM is dud now. But maybe something changed in regard of CPU. Maybe I can clock it higher now. Lets see :D
 
Tip after many joyfull and horrific X99 overclocking nights: reset you bios to default values, use MemOK! and start over again.
X99 bios tends to walk away in strawberry fields forever. And does not like to be pushed too hard. Use auto values as much as possible.

I also used Cadaveca's tip to increment the power band (read his latest Trident Z 3886 review)
 
Ok, reset everything. Haven't tried fiddling with RAM yet, but I'm typing this from 5820K ticking at 4.8 GHz :D My smile goes all the way around. Maybe my BIOS was really walking in strawberry fields because before I couldn't get it past 4.5 GHz either. Hm. Now, to the RAM :D
 
Nope. CPU overclocks better now, RAM is basically unmovable now. All I can do is give it 1T command timing and that's it. Lowering other timings or increasing clock makes it super unstable or simply unbootable. And not even with beeping error for RAM. It simply doesn't boot in absolute silence. :/ Oh well. That's a disappointment, can't overclock the ram even for 200MHz. I guess I can't have best everything if the CPU is such a gem.
 
i think the newer bios are more optimized for samsung memory.
when x99 came out hynix was tha flavor but now everything turns to samsung
 
Are you sure that 4.8GHz is stable? Try some good old 16hrs Realbench Stress test or 8hrs of OCCT. AIDA64 stress test simply won't cut it to stress X99 platform enough.
 
basco said:
i think the newer bios are more optimized for samsung memory.
when x99 came out hynix was tha flavor but now everything turns to samsung
Click to expand...

Hynix IC chips are shitty at best. My first set from ADATA DDR4-2800 was Hybix IC. Eventually it refused to boot at rated 2800 and would constantly drop one stick out of four. I thought that was Sabertooth X99's problem or the CPU's IMC problem. Nope. Turns out it was just shitty Hynix.Since the exact same MoBo and CPU would gladly take my 128GB RAM at DDR4-3000, with CL14-14-14-35 timing!

My current GSKILL set utilize top of the line Samsung IC. Never had any stability problem.
 
Dude be careful. I saw your cooler is a single 120mm radiator. Pushing 4.8GHz on Haswell-E with your cooler is a little bit risky.
 
RejZoR said:
My RAM is dud now. But maybe something changed in regard of CPU. Maybe I can clock it higher now. Lets see :D
Click to expand...

Well some bios do make ram OC go shit.. Saw it on my Z87 delux too.. Mostly newer..

I could OC my 2133 to 2400 or even 2666, then with latest bios 2400mhz no go.. I reverted to older when I still had 2133 ram.
 
The thing with DDR4 is the IC has been heavily binned from the start. For example, if the IC can run DDR4-3000 it WILL be put to make DDR4-3000 sticks. So most lower speed RAM IC are actually of worse quality comparing with higher speed RAM IC. In other words, you get what you pay for.
 
Not quite. Because while that ram is 3000, it would mean that RAM shouldn't overclock at all either since it's already on the IC limit. But that's usually not the case...
 
ram overclocking is a waste of time .....try n put that much time n effort in cpu and then GPU overclocking
 
I have all that already overclocked enough.
 
Ok, I've had a breakthrough. I don't get it how, but somehow I managed to OC my 2400 MHz (15-15-15-35-2T) RAM to 2666 MHz like 2 days ago. What's bizarre, I've already tried this before, with same BIOS and it just didn't work. Now I can pump out 2666 MHz at 15-15-15-25-1T and only 1.280 V. That's 266 MHz extra with tighter timings. I just don't get it how my PC overclocks better at low voltages. Not that I'm complaining, it's just really weird since we are used to crank voltages high to achieve anything...

2800 MHz still doesn't want to function (no POST), but it's a decent OC I guess. Besides, I have to poke second tier timings, supposedly those matter more with DDR4 than primary timings.
 
p1kalmig2k149.jpg


try 1.35v and a bit lower timing. All of the memory chips I have seen for DDR4 scale to at least 1.35v.
 
What was your stock RAM clock? I've never had much experience with RAM overclocking, so I have no idea how far they even scale. Is 2400 -> 2800MHz a lot or can you get even more? I just have no idea. 3000 or 3200 MHz would be sweet though, but just seems too high to obtain from 2400 MHz stock modules...
 
These are just running their XMP. The original set I had in there were 2800mhz and I had those over 3200. It just depends on the kit that you are using. Any idea what modules are under the heatspreader?

This is the original set I had in the rig

3055cl15.png
 
XMP on mine is just 2400 MHz. So, 2800 MHz is kinda an expected limit I'd say. 2666 MHz being OK-ish OC.
 
RejZoR said:
XMP on mine is just 2400 MHz. So, 2800 MHz is kinda an expected limit I'd say. 2666 MHz being OK-ish OC.
Click to expand...

That 2800mhz kit saw over 3400...It really just depends on what memory you ended up with.
 
It would be easier if I'd know what changed since last time when I couldn't get it even to 2666MHz... All the settings are the same, same BIOS, but now it goes somewhere. Before, it wouldn't move anywhere from 2400MHz no matter the voltage. Tried even 1.35 and 1.4V.
 
That is weird...
 
RejZoR said:
It would be easier if I'd know what changed since last time when I couldn't get it even to 2666MHz... All the settings are the same, same BIOS, but now it goes somewhere. Before, it wouldn't move anywhere from 2400MHz no matter the voltage. Tried even 1.35 and 1.4V.
Click to expand...
YMMV
What ive learned atleast with my system is that I found the fastest 2400 trident kit on the Gskill site ( i have ripjaws 2133 16GB kit), set my ram exactly the same as that kit with the same voltage, it runs just fine, i then went back and adjusted timings 1 by 1 until they wouldn't boot or would cause a BSOD, now have the tightest timings my ram will go for stability.

Look at my signature below
 
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