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Mushkin Memory not able to run at 2133 in x79

2K views 12 replies 4 participants last post by  rctrucker 
#1 ·
All of my rigs details are in my sig rig so here is the problem.

While overclocking I have achieved right where i want to be, around 4.5ghz while under 1.33vcore. I have used 34x133 and 45x100 and had about the same results.

Now the issue I have is with stress testing my memory at higher speeds. I am unable to get prime stable when I set my memory to auto and load the XMP 1.2 settings (which is detected fine at 1.65v 9-11-10-28 2T).

In order for me to be stable I have to drop my memory speed down 1866 or lower. Every time I test it seems that workers start to drop off, I lose 1 worker every 30 seconds or so running blend test.

I have tried setting the memory and bumping up my CPU Vcore, bumping up my memory Voltage, dropping the timings all the way to 11-13-12-36, with no success. I have also attempted to set everything manually with the speeds/timings/voltages of the memory. No dice.

Is this and issue that I should look into RMA'ing my memory because it does not run at 2133mhz stable at the spec timings?

I'm not even overclocking the memory, I just want it to run at what is stated.

Thanks
 
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#3 ·
I had a similar situation with my G-Skill set and X79. It's rated for 8-9-9-24/2N/1.5V/1866 but randomly bluesreens and instantly fails P95 blend at that XMP profile.

It will run 8-9-9-24/1N/1.5V/1600 or 9-9-9-24/2N/1.5V/1866.

I thought about RMA, but I bet the new set would do the same. If one was truly defective, I don't think it would run stable at other speeds/timings. With yours I'm guessing the same, but if you want to be sure you'd have to P95 Blend test each stick separately at rated XMP profile.

Maybe a problem with incompatibility? I've heard Corsair sets run strong at their rated speed. For me, there weren't any other sets at 1866/1.5V that could beat the 9-9-9-24 and I honestly don't see any need for 2000+ speeds and loose timings.
 
#4 ·
Quote:
Originally Posted by 2thAche View Post

I had a similar situation with my G-Skill set and X79. It's rated for 8-9-9-24/2N/1.5V/1866 but randomly bluesreens and instantly fails P95 blend at that XMP profile.
It will run 8-9-9-24/1N/1.5V/1600 or 9-9-9-24/2N/1.5V/1866.
I thought about RMA, but I bet the new set would do the same. If one was truly defective, I don't think it would run stable at other speeds/timings. With yours I'm guessing the same, but if you want to be sure you'd have to P95 Blend test each stick separately at rated XMP profile.
Maybe a problem with incompatibility? I've heard Corsair sets run strong at their rated speed. For me, there weren't any other sets at 1866/1.5V that could beat the 9-9-9-24 and I honestly don't see any need for 2000+ speeds and loose timings.
I will try to removed all the sticks but one, and give it a shot. Then try each stick, but why pay for memory that doesn't run at it's specs? It's not like I'm trying to push it further, I just want what it says on the box.
 
#5 ·
What Vtt and IMC voltages are you trying?

I can run Mushkin 997000 kit, which is 1600Mhz kit, at 2333Mhz at stock voltages using 9-11-10-31 timings. So I doubt it's the memory itself, unless your kit is damaged, you probably just need to find the right mix of Vtt and IMC voltages. Or it could be a BIOS compatibility issue?
 
#6 ·
Quote:
Originally Posted by lsdmeasap View Post

What Vtt and IMC voltages are you trying?
I can run Mushkin 997000 kit, which is 1600Mhz kit, at 2333Mhz at stock voltages using 9-11-10-31 timings. So I doubt it's the memory itself, unless your kit is damaged, you probably just need to find the right mix of Vtt and IMC voltages. Or it could be a BIOS compatibility issue?
The motherboard is not "officially" compatible with the memory I have in it now.

Here are the voltage settings:

VCCSA: 1.195v
DRAM: 1.65v
VTT: 1.202v
CPU PLL:1.811v
PCH 1.1v:1.107v
PCH 1.5v:1.5v

I attempted bumping up the Dram in increments all the way to 1.7v, without success.

Also upped the VTT to 1.254, 1.306, 1.358 without any success.

Attempted to set all timings and voltage manually, not using XMP, no success.

I'll be back in about an hour after this movie to try any more suggestions.
 
#7 ·
Ya, Mushkin usually doesn't make it onto any compatibility lists because they are a smaller company and don't often get many samples out to manufacturers I don't tihnk. No worries there, I just said it in case you've heard of others with similar kits (Same IC's) having issues on your board, then you'd know it was a BIOS issue.

What speed are you running the CPU at? You may not need that much Vtt, but may need more VCCSA (1.2-1.3), dram voltage should be fine at it's specified amount.

You should test each stick one by one as mentioned above, just to be sure you don't have a weak stick in the mix. I'd run at least 5-10 full passes on each stick one at a time to be sure they are all OK
http://www.memtest.org/#downiso

Do that at stock CPU speed, and rated ram speed with voltage and timings manually set. Vtt and VCCSA can be left in auto for the single stick tests, that should be fine with the CPU at stock and only a single stick in use.
 
#8 ·
Quote:
Originally Posted by lsdmeasap View Post

Ya, Mushkin usually doesn't make it onto any compatibility lists because they are a smaller company and don't often get many samples out to manufacturers I don't tihnk. No worries there, I just said it in case you've heard of others with similar kits (Same IC's) having issues on your board, then you'd know it was a BIOS issue.
What speed are you running the CPU at? You may not need that much Vtt, but may need more VCCSA (1.2-1.3), dram voltage should be fine at it's specified amount.
You should test each stick one by one as mentioned above, just to be sure you don't have a weak stick in the mix. I'd run at least 5-10 full passes on each stick one at a time to be sure they are all OK
http://www.memtest.org/#downiso
Do that at stock CPU speed, and rated ram speed with voltage and timings manually set. Vtt and VCCSA can be left in auto for the single stick tests, that should be fine with the CPU at stock and only a single stick in use.
Right now I am running it at 133x34 for 4522mhz OC. It is in my sig rig specs. I can try tweaking the vccsa and seeing if that helps, although I might be satisfied if I can run it at 1866 but 8-10-9-28 timings, we'll see as i play with it some more.
 
#10 ·
I've found that setting Prime95 to test memory if far more sensitive than Memtest86+.

Select blend, then custom change settings to these:

407

I set 10000 in the "memory to use" box since I've got about 12-13GB free.

The standard blend will work also, but I'd still change the "memory to use" to a higher setting.
 
#12 ·
Quote:
Originally Posted by rctrucker View Post

The motherboard is not "officially" compatible with the memory I have in it now.
Here are the voltage settings:
VCCSA: 1.195v
DRAM: 1.65v
VTT: 1.202v
CPU PLL:1.811v
PCH 1.1v:1.107v
PCH 1.5v:1.5v
I attempted bumping up the Dram in increments all the way to 1.7v, without success.
Also upped the VTT to 1.254, 1.306, 1.358 without any success.
Attempted to set all timings and voltage manually, not using XMP, no success.
I'll be back in about an hour after this movie to try any more suggestions.
The VCCSA at 1.195v and the VTT at 1.202v seam really high from my experience. I have 8x4Gb modules running 1866 right now (the Samsung 30nm kits) and my VCCSA is at 1.05v and my VTT is at 1.10v. The seconmdary timings seem to play a big part in ram stability with the x79 chipset. Here are the settings I am trying to follow (might be more ram dependent) which you might find helpful. These might be more specific to the 30nm Samsung ram, but VCCSA and VTT are for the CPU's internal memory controller:

http://www.techpowerup.com/reviews/Samsung/MV-3V4G3/6.html
maxoc_timings.jpg


More on VCSSA and VTT:
Xbit Labs: DDR3 SDRAM for LGA 2011: Which Memory Is Best
By Ilya Gavrichenkov | January 07, 2012
Quote:
However, during our conversations with Intel we managed to find out that only the increase to 1.1 V on VCCSA and to 1.2 V on VTT may be considered "safe" for everyday use in 24/7 mode. Moreover, you should also keep in mind the recommendation not to exceed 1.65 V for the memory voltage, otherwise, it may stimulate degradation of the memory controller and untimely death of your processor. However, you can almost always reach DDR3-2133 frequency even without using the "risky" settings.
 
#13 ·
The settings I posted above were on auto, I don't believe the XMP profile adjust anything but the DRAM, but don't quote me on that.

I have tried an abundance of settings with no luck. There might be some combination that would work, but I have yet to find it.

Do you think lowering the voltages would increase the stability? I have never see that to be the case, but this might be the first.
 
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