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*Official* Intel DDR4 24/7 Memory Stability Thread - Page 247

post #2461 of 5752
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Quote:
Originally Posted by opt33 View Post

My new Gskill 4x8gb 3200C14 1.35v kit needed 1.2v SA, 1.15v I/0 to boot with XMP profile (1.36v dram V auto) but running HCI has multiple errors in less than 1 minute, or bsods. Assumed since rated 1.35V that my board XMP giving it 1.36V was sufficient, but finally tried 1.38v Dram, now was able to back off SA/I/0 to 1.15 and 1.10 and no errors in 30 mins so far (using 85% mem with HCI), which is 30x longer than any other attempt before raising dram v.

Reasonable odds that it is not indicative of failing ram if it passes at 1.38v? In which case, just run at 1.38v.

Not all of those kits are certified for X99, so in terms of guardband, compensating with more DRAM voltage is not all that out of the ordinary. G.SKILL is all hand binned, some may need it and others won't.
Edited by Silent Scone - 8/12/16 at 2:58pm
post #2462 of 5752
Quote:
Originally Posted by superkyle1721 View Post




CPU core: 4.843
Cache: 4.843
Vcore: 1.44V
Dram: 1.49V
VCCIO: 1.224V
SA: 1.25V

Tested stable with 4 passes of memtest. I plan to download and install Gsat to further test and submit. I think this will be my 24/7 settings. What do you guys think?

for a Z170 board, those voltages are just fine.. especially seeing that you can get away with only 1.25V VSA with that ram frequency. thumb.gif
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x99
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i7 5960X i7 6950X Asus Rampage V Extreme 10 2 GTX Titan X Pascal 
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GSkill 3200c14 TZs 8x8GB @ 3400c13 Intel 750 NVMe 400GB 2x Plextor SSD 256 Raid 0 (Win 7) Samsung NVMe 950 Pro M.2 
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post #2463 of 5752
Quote:
Originally Posted by Silent Scone View Post

Not all of those kits are certified for X99, so in terms of guardband, compensating with more DRAM voltage is not all that out of the ordinary. G.SKILL is all hand binned, some may need it and others won't.

thanks...Ill just run at 1.38v then....currently im at 130% coverage, still no errors, so looking good so far.
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post #2464 of 5752
Doing some more experimenting I got a configuration in adaptive with DDR4-3458 14-15-14-21 with the tight tweaks I had to run 80 minutes of GSAT. The only catch is it's a bclk of 96, right at the low edge (95.8 will not boot nohow noway, 95.9 gets weird and thinks it's 96), and I'm going to need over 1.41 vcore for 4610GHz cryingsmiley.gif
post #2465 of 5752
If I am on X99 platform with a HWE processor am I realistically limited to the 3200/3400 limit? Looking at the table on the first page I did not see any HWE results near Skylake, I'm not sure if this is just because people do not post or if those are the expected limits of HWE. I am very tempted to buy a new G.Skill kit but if my motherboard/processor isn't capable of running the higher speeds I'd like to avoid throwing away my money.
post #2466 of 5752
Thread Starter 
Quote:
Originally Posted by sdrawkcab View Post

If I am on X99 platform with a HWE processor am I realistically limited to the 3200/3400 limit? Looking at the table on the first page I did not see any HWE results near Skylake, I'm not sure if this is just because people do not post or if those are the expected limits of HWE. I am very tempted to buy a new G.Skill kit but if my motherboard/processor isn't capable of running the higher speeds I'd like to avoid throwing away my money.

The highest supported ratio for HWE is 3200, this should tell you all you need to know.
post #2467 of 5752
Quote:
Originally Posted by Silent Scone View Post

The highest supported ratio for HWE is 3200, this should tell you all you need to know.
In regards to the table, is Moorhen's stability with 3340Mhz and 3426Mhz on the case of a very good HWE chip? I've checked the thread for my motherboard model to see very few people above 3200 so I am curious myself what falls under requirements for this.
post #2468 of 5752
Thread Starter 
Quote:
Originally Posted by sdrawkcab View Post

In regards to the table, is Moorhen's stability with 3340Mhz and 3426Mhz on the case of a very good HWE chip? I've checked the thread for my motherboard model to see very few people above 3200 so I am curious myself what falls under requirements for this.

3333 to 3400 on Haswell-E will need a fairly good IMC, but it's also down to everything being in your favour within some of the deeper auto parametres also. Some of these guys will go through several kits for example, before finding stability.

3200 is the strongest ratio on Haswell-E, this is why you are seeing what you are in the other thread. As I've already said, this is the highest supported ratio officially, so if piecing things together you can probably imagine why this might be.
post #2469 of 5752
Quote:
Originally Posted by Silent Scone View Post

3333 to 3400 on Haswell-E will need a fairly good IMC, but it's also down to everything being in your favour within some of the deeper auto parametres also. Some of these guys will go through several kits for example, before finding stability.

3200 is the strongest ratio on Haswell-E, this is why you are seeing what you are in the other thread. As I've already said, this is the highest supported ratio officially, so if piecing things together you can probably imagine why this might be.

This clears many doubts, thanks. When reading posts from the various users it is hard to know how many dimms they have gone through, I try to avoid assuming.

Now this may be a silly question, but it would be silly to not ask. Ruling out Z170 ram frequencies on X99, do you think there is room to buy a DDR4-4000 C16 kit and underclocking it to 3200 and a low cas latency? I don't want to assume that because it can do C16 at 4000 it will do something ridiculously low such as C10 3200, would these type of numbers be limited by the DDR4 architecture itself?
post #2470 of 5752
Quote:
Originally Posted by Silent Scone View Post

3333 to 3400 on Haswell-E will need a fairly good IMC, but it's also down to everything being in your favour within some of the deeper auto parametres also. Some of these guys will go through several kits for example, before finding stability.

3200 is the strongest ratio on Haswell-E, this is why you are seeing what you are in the other thread. As I've already said, this is the highest supported ratio officially, so if piecing things together you can probably imagine why this might be.

Technically 2133Mhz is officially the highest supported ratio for HWE, anything else is overclocked. 3200Mhz is the best to run with HWE because you don't need to use a different strap..... but definitely not the strongest

Why would anyone get multiple memory kits and not try to find stability on all of them? Do you mean they bin several kits before finding the best?

Also my motherboard's QVL say's it supports 3400Mhz

Oh and here is 3600Mhz on x99 HWE


biggrin.gifbiggrin.gif
Edited by lilchronic - 8/13/16 at 3:28am
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