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*Official* Intel DDR4 24/7 Memory Stability Thread - Page 500

post #4991 of 5786
Quote:
Originally Posted by Nizzen View Post

Allways use latest Aida 64 beta wink.gif

https://www.aida64.com/downloads/N2IzMDI5Y2M=



even using the new aida doesnt change anything

Anyone here using 7920x as well having this problem?

aida doesnt seems to recognize this cpu
post #4992 of 5786
Quote:
Originally Posted by venomousdesigns View Post

Thank you for the prompt response tknight! Some important points I missed out sorry haha...

Literally a complete novice to this 'new era' of Overclocking (coming from a 2600k) - I'd like to be able to get to 5GHz on the 8700k and I use it as an everyday PC; Gaming, Work (just normal Word/Excel not rendering etc) and general browsing (and I may take up Streaming now with my new PC!). Nothing extreme, I do normally put my PC to 'sleep' once I finish for the evening - unless there's a new PC game release tongue.gif.

Oh crap I didn't release that about the RGB PCBs, is it that a big a difference for my non-extreme OC'ing - I'll probably like to just have them running at 3200MHz @ CL14, from benchmarks the next 'big' jump is 4266 which I'm not too keen on trying haha. I cannot for the life of me find out if these are 'single-sided' or 'double-sided' or where you saying all 16GB Modules are double-sided?

http://www.gskill.com/en/product/F4-3200C14D-16GTZR
https://www.gskill.com/en/product/f4-3200c14d-32gtzr

Basically for my light OC needs, are the 8GB Modules going to be easier to Overclock vs the 16GB Modules - I honestly don't even think I need 32GB ATM but I'm concerned with future proofing and then figured I'd ask about if I'm not doing Quad Channel (which Coffee Lake doesn't, and not sure about Ice Lake?) if its better to spend the extra now or later...

Thxs!

For everday 24/7 use, then the RGB modules are fine, as you can overclock them to higher frequencies and moderately tighter timings. It is only when benching at C12 with tight timings, that 99% of the RGB modules just fail to train up.

For what you will be doing, I would suggest getting either the RGB or NON-RGB version of the Trident Z - 3600mhz C16-16-16-36 16GB (2x8GB) kit or 32GB (4x8GB) kit, which are the following part numbers :

3600mhz C16 16GB RGB Kit - F4-3600C16D-16GTZR
3600mhz C16 32GB RGB Kit - F4-3600C16Q-32GTZR

3600mhz C16 16GB Kit - F4-3600C16D-16GTZ
3600mhz C16 32GB Kit - F4-3600C16Q-32GTZSW

They are all Single Sided B-Die modules, which will overclock a lot easier than the double sided ones.

The 3600mhz kits are the best ones for overclocking to higher frequencies, as they just bin a lot better than all the other different frequency modules.

The RGB issue of the corruption of the SPD, occurs when you change the colours using the software, because it writes the changes to the SPD section of the module. This then causes a CRC Error, which you can verify using Thaiphoon Burner, which is also the best software for when you are wanting to identify all aspects of your modules.

However this does not affect the operation of the module and can only be seen when doing a CRC check of the module in Thaiphoon. There are ways to fix the CRC Error. So if you are wanting RGB modules for the look, then don't panic and by all means get them and if you leave them running the default rainbow colour mode and never install or run the RGB software, then you will never get the CRC error.

Here is a link to a list of all the different memory IC's and which kit has what IC and whether it is single or double sided. So you can just search for your kits part number and find out exactly what it contains.

Link - Samsung and Hynix IC List
post #4993 of 5786
Quote:
Originally Posted by zilin View Post



even using the new aida doesnt change anything

Anyone here using 7920x as well having this problem?

aida doesnt seems to recognize this cpu
Contact Fiery (Aida64) and explain the problem

I asked for the Vcache, and in the latest version, it's available
I am currently seeing to have the Input Voltage
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post #4994 of 5786
Quote:
Originally Posted by venomousdesigns View Post

Thanks for that JMTH! Confirmed that the 8GB Module is Single and the 16GB is Dual. Now I've spent the last 2hrs reading about the Trident RGB SDP corruption issues and am terrified!

I'm thinking now is it better I go for the plain non-RGB Trident or Ripjaw options...

F4-3200C14D-32GTZKW
F4-3200C14D-32GVK

If I can get a verdict on if I should go 2x8GB (to begin) or 2x16GB (Single vs Dual argument) with regards to being able to do the advertised CL14 @ 3200MHz (14-14-14-34) on my new Intel 8700/z370 system, I can begin to place my order smile.gif. I've gotten myself SO confused because most threads/Google results are talking about RAM issues with AMD Ryzen - does it affect us Intel'ers?

Am I correct in thinking if I went the 2x16GB route (as opposed to their 2x8GB solution - single vs dual) I would not be able to run them at 3200MHz 14-14-14-34 on my Asrock Z370 with Intel 8700k? Or it will run as normal, just Overclocker will be harder on the dual-ranked sticks?

Thxs!

Wish I could tell ya but my motherboard maxes out at 3333. I was able to get a 4x16 kit to tighten down to 13-14-13-28-1 after a lot of tweaking and looking through the thread at other people's settings.
I have seen that if you want to get onto the 4000mhz range then I believe 2x8 or 4x8 single sided samsung b die is recommended. At least that's what I remember hehe.
    
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post #4995 of 5786
In regards to z370 and RAM (so far) is that most kits haven't been tested. Gigabyte has a handful, but there's many kits on the QVL. Personally, I'm finding anything over 3200MHz needs a bit more VCCIO and VCCSA over z270/Kaby Lake. It could be a bios thing... Kinda too early to tell. At least with the latest bios I can actually boot into bios at 4000Mhz... Doesn't seem very stable tho.
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post #4996 of 5786
For me new mainboard z370 Taichi work better than z270F Asus. When it comes to getting higher memory clocks.
I have f4-3200C14D-GTZ

Atm working with 4133 CL 16-16-16 36 360 CR2 1.48V 1.2 VCCIO/SA
Without mutch problem I have 3600CL14-14-14-36-360 CR1 1.45V as well.



But at maximum, what I achieved was 4300MHz. But timings....They were not interesting.

I guess better ddr4 modules like f4-4400c19d could give more..maybe not in clocks but timings.




ogider -- 8700K@ 4.8/4.5 --- Asrock Z370 Taichi --- 4133 16-16-16-36-2T --- 1.48V --- SA 1.208V --- IO 1.192V --- Stressapptest --- 1 Hour--F4-3200C14D-16GTZ


Edited by ogider - 10/23/17 at 6:46pm
post #4997 of 5786
Thread Starter 
Nice work smile.gif. Now what about 1T wink.gif?
post #4998 of 5786
post #4999 of 5786
Hi, I have been lurking in this forum for a while but now I have been having issues with my ram, my system is:

CPU: i5 6400 @ 4.62 GHz BCLK OC
MB: ASRock Z170 Extreme6
RAM: Patriot Viper Elite 2 x 4GB DDR4-3200, CL16-16-16-36 (PVE48G320C6KRD)

Previously my CPU was at 4.7 GHz but I had problems running my ram at 3248 MHz, with auto timings my PC wouldn't post so I had to manually set the primary timings to 16-16-16-36-2T but sometimes it wouldn't post on cold boot, I lowered my BCLK OC to 4.62 GHz so I could choose 3200 MHz ram speed, now my PC post with auto timings but the timings are like 20-20-20-40 so I manually set again to 16-16-16-36-2T, if I try to lower the timings, change command rate or increase the frequency my PC won't post, it'll show error code 55 every time.

I tried messing with DRAM voltage and VCCIO/SA but it doesn't seem to help only if I go from 1.35 V to 1.49 V I'll get like CAS 15 or 14 but nothing else.

It seems like the RAM it is failing training.

So the question is: there is something I could try to lower the timings or my ram is trash and I should be grateful I could run it at stock speeds?

Thanks.

PD: English isn't my first language so if anything doesn't make sense tell me and I'll try to explain it better.
post #5000 of 5786
Quote:
Originally Posted by zilin View Post



even using the new aida doesnt change anything

Anyone here using 7920x as well having this problem?

aida doesnt seems to recognize this cpu

I had the same issue along with a few other people. We covered it a bit in the Skylake-X/Kaby Lake-X thread.

7920X chips and higher tend to have lower memory write performance and slightly higher memory latency. The issues seems to start with the 7920X and lessons a bit with the 7980XE. I personally believe that it's a result of the bigger die and the longer mesh routing within the CPU to support the higher core count.

I started with a 7900X, which obviously has a smaller die than the 7920X through 7980XE chips. Read and Write bandwidth on the 7900X are almost identical (~110 GB/s Read, 110GB/s Write) with Copy being slightly lower (99 GB/s Copy). Latency ~ 48ns - 49ns.

When I switched to the 7920X using the same memory configuration, Write bandwidth dropped dramatically. The absolute best I could ever get out of the same 4x8 single rank kit was ~76 GB/s Write, which wasn't even stable. Latency also increased to ~52ns - 53ns.

Anyways, here are some links to a couple of other guys seeing the same results.

http://www.overclock.net/t/1632870/skylake-x-kaby-lake-x-combined-discussion/3700_100#post_26369117

http://www.overclock.net/t/1632870/skylake-x-kaby-lake-x-combined-discussion/3900_100#post_26381300

http://www.overclock.net/t/1632870/skylake-x-kaby-lake-x-combined-discussion/3900_100#post_26381502

http://www.overclock.net/t/1632870/skylake-x-kaby-lake-x-combined-discussion/3900_100#post_26382232

http://www.overclock.net/t/1632870/skylake-x-kaby-lake-x-combined-discussion/3900_100#post_26382545



Here, you can see by the time it gets to the highest core count on that larger die size, the 7980XE seems to have gained some of that Write bandwidth back, but not all of it.

http://www.overclock.net/t/1632870/skylake-x-kaby-lake-x-combined-discussion/3900_100#post_26381326
x299 / 7900x DD1
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