8 PACK MEMORY RANGE GROWING: SAY HELLO TO 8 PACK RIPPED EDITION & 32GB KITS!!!

I spoke to soon. I restarted so I could redo my CPU OC and test stability with that and it didn't POST again. So, in conclusion:

XMP didn't work
Manual timings didn't work
1.4v didn't work

After bios reset:
XMP didn't work
Manual timings didn't work
XMP then changing to 1.4v worked for 2 POSTs and failed on the third
 
O
benjii said:
I spoke to soon. I restarted so I could redo my CPU OC and test stability with that and it didn't POST again. So, in conclusion:

XMP didn't work
Manual timings didn't work
1.4v didn't work

After bios reset:
XMP didn't work
Manual timings didn't work
XMP then changing to 1.4v worked for 2 POSTs and failed on the third
Click to expand...
Not sure on your board. But put every thing to auto and let it run as basic jedec. 2133 or what ever it is.

Perhaps pull them out and reseat.
 
lnoton said:
O

Not sure on your board. But put every thing to auto and let it run as basic jedec. 2133 or what ever it is.

Perhaps pull them out and reseat.
Click to expand...

I was able to POST fine when they were running 2133, no problems there.

Servo said:
Try the ram in the other two slots.
Click to expand...

Would that make a difference? I mean beyond testing whether the slots are faulty. As I was running 4x8GB, so all slots populated. I'm back on that now and everything is ok.
 
benjii said:
I was able to POST fine when they were running 2133, no problems there.



Would that make a difference? I mean beyond testing whether the slots are faulty. As I was running 4x8GB, so all slots populated. I'm back on that now and everything is ok.
Click to expand...
What board do you have? Normally it's slot 2 and 4 furthest away from cpu. I think it matters.
 
lnoton said:
What board do you have? Normally it's slot 2 and 4 furthest away from cpu. I think it matters.
Click to expand...

I have a Asus Maximus VIII Hero Alpha. I did double check the memory configurations in the manual prior to installing the RAM as I had 4 sticks in previously and couldn't remember which slots it was for 2.
 
lnoton said:
So where are you upto?
Click to expand...

I'm back with my old RAM. The only stable config with the new RAM both with and without a bios reset was the default 2133Mhz. 3600Mhz @ 1.4v had a hint of stability but ultimately failed. I'm not sure there's anything else to try, I think I covered it all. I guess I'll contact OCUK and see what they think.
 
Here is my dram calc results with my ram.

Remember these are not the 3600MHz CL14 kit. These are the 3200MHz CL14 kit which I have used the dram calc to run at 3600MHz CL14.

Voltage is high tho. 1.47v in the bios but after the bios over volts it it is more like 1.488v - 1.5v.

Untitled.png
 
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opethdisciple said:
Here is my dram calc results with my ram.

Remember these are not the 3600MHz CL14 kit. These are the 3200MHz CL14 kit which I have used the dram calc to run at 3600MHz CL14.

Voltage is high tho. 1.47v in the bios but after the bios over volts it it is more like 1.488v - 1.5v.
Click to expand...
Create a RAM benchmark thread!
 
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benjii said:
I'm back with my old RAM. The only stable config with the new RAM both with and without a bios reset was the default 2133Mhz. 3600Mhz @ 1.4v had a hint of stability but ultimately failed. I'm not sure there's anything else to try, I think I covered it all. I guess I'll contact OCUK and see what they think.
Click to expand...
Disappointing start..
 
opethdisciple said:
Here is my dram calc results with my ram.

Remember these are not the 3600MHz CL14 kit. These are the 3200MHz CL14 kit which I have used the dram calc to run at 3600MHz CL14.

Voltage is high tho. 1.47v in the bios but after the bios over volts it it is more like 1.488v - 1.5v.

Untitled.png
Click to expand...

Those results seem poor for 3600c14. I'd definitely test to see if it's stable. I use Karhu Ram Test but it's not free, less than a tenner though.
For free you can use Prime 95, custom stress test with 800k-800k, in-place FFT unticked, and 14000MB/28000MB memory allocated. Instability should cause a worker to fail within 30 minutes. Beyond that I'd run it overnight to be sure, once you are happy with your timings.
TM5 with 1usmus config is good too, though I have ran 20 cycles of that, passed, then ran Karhu or the p95 custom, and failed within minutes.

You shouldn't need gear down mode enabled with 2x8GB, which may be holding your bench results back. Need it for 2x16GB but bank interleaving increases performance and makes up for it a little.

memory-3400c14-dramcalc-membench.png
 
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LadFromWales said:
Those results seem poor for 3600c14. I'd definitely test to see if it's stable. I use Karhu Ram Test but it's not free, less than a tenner though.
For free you can use Prime 95, custom stress test with 800k-800k, in-place FFT unticked, and 14000MB/28000MB memory allocated. Instability should cause a worker to fail within 30 minutes. Beyond that I'd run it overnight to be sure, once you are happy with your timings.
TM5 with 1usmus config is good too, though I have ran 20 cycles of that, passed, then ran Karhu or the p95 custom, and failed within minutes.

You shouldn't need gear down mode enabled with 2x8GB, which may be holding your bench results back. Need it for 2x16GB but bank interleaving increases performance and makes up for it a little.

memory-3400c14-dramcalc-membench.png
Click to expand...

You're right. I hadn't applied the settings in the misc box from the dram calc and gear down mode is disabled. So I'll try that.

I do seem to be stable yes. I passed 400% HCI and I played about 2hrs of BFV on it yesterday. Not an extensive test but thats all I had time for. I do find BFV is a good test of stability tho. Usually find instability within 20mins on that game.

But thanks for the GDM suggestion. I'll apply it.

---

Ok so I went in to the bios and disabled GDM and PDM and immediately received two memory errors when stress testing within seconds. Also my latency actually increased form 66ns to 67ns.

Voltage wise I am at 1.47v in the bios but after the board overvolts it is 1.488-1.5v. I am not sure I have any more voltage wiggle room to go any higher with GDM and PDM disabled or do I?

---

So I've just had a mess about with my ram and it absolutely will not do gear down mode disabled. I threw everything at it. All dram calc voltages and even up to 1.55v dram. Would not pass more than a few seconds stress test.

So I think my current set up is as good as it will get.
 
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