G.Skill Ripjaw V Overclocking

[Tobalex]

I have a few problems with my ram. I just bought a 16Gb Kit of Ripjaw V DDR4 Memory. I choose a kit without an XMP profile because i thought i can just overclock them myself and save some money. Now i tried that and it is working fine but i really can't get the kit past 2700Mhz. It doesn't matter what i try. Right now i have them running @2700 14 14 14 34 278 2T. I tried it with high very high timings and 1.4 Volts. My VCCIO and VCCSA voltage is both at 1.15V too so that shouldn't be the problem. So did i just got a really bad kit? Because normally this ram can overclock much higher than that.

I even tried the same ram but with the xmp 2400Mhz profile from my brother and got it to 3200Mhz @16 16 16 36 350 2T. Even 3400Mhz would be possible. Are xmp kits somehow better than non xmp kits? I always thought the ram itself is the same just the speed is different. I know that overclocking capabilitys can vary but this much?

I mean i don't really care because they are good enough like that. Still i thought i could push them easily to 3000Mhz without any problems. Or am i just missing something here?

 

[ATMINSIDE]

What model number did you buy?

 

[Tobalex]

Spoiler

This is my ram that i only got to 2700mhz.

Spoiler

This is the ram from my brother that i got to 3200mhz and higher. The only difference is that this has an xmp profile and was manufactured one month later.

 

[ATMINSIDE]

Your brother is just lucky that his will overclock that high, be glad yours will run where it does also.

 

[Mandrake4565]

The Ic's on those 2 sets are different as well, I believe your set are Hynix IC’s and your brothers are Samsungs.

 

[ATMINSIDE]

Yep, A400 and A500, good call Manny.

 

[Woomack]

It's Samsung based kit and regardless what is inside it should OC higher ( well, maybe except Microns ). Check these threads and maybe you will find settings to OC it higher:
http://www.overclockers.com/forums/...x8GB-)-DDR4-3000-CL15-1-35V-F4-3000C15D-16GVR
http://www.overclockers.com/forums/...x8GB-)-DDR4-3200-CL16-1-35V-F4-3200C16D-16GVK

Here you have 2133 Geil kit based on similar Samsung IC but tested on X99:
http://www.overclockers.com/forums/...1-20V-GPR416GB2133C15QC?p=7840063#post7840063

On Z170 it may require slightly higher voltage.
Also since memory has no XMP profile then you have to set some sub timings manually for higher clocks.
3000 is usually working at 15-16-16 1.35-1.37V or something close like 16-16-16, 15-17-17.

 

[Mandrake4565]

It's Samsung based kit and regardless what is inside it should OC higher

I thought A400 was Hynix Woomack?

 

[Tobalex]

The Ic's on those 2 sets are different as well, I believe your set are Hynix IC’s and your brothers are Samsungs.

Really? Wow i thought they are all made of Samsung ICs. i searched for a while and only found about that they are using Samsung ICs. Even on the official website they only mentione samsung. That would explain something. Maybe i should have paid the 2€ more for the 2400mhz Kit

It's Samsung based kit and regardless what is inside it should OC higher ( well, maybe except Microns ). Check these threads and maybe you will find settings to OC it higher:
http://www.overclockers.com/forums/...x8GB-)-DDR4-3000-CL15-1-35V-F4-3000C15D-16GVR
http://www.overclockers.com/forums/...x8GB-)-DDR4-3200-CL16-1-35V-F4-3200C16D-16GVK

Here you have 2133 Geil kit based on similar Samsung IC but tested on X99:
http://www.overclockers.com/forums/...1-20V-GPR416GB2133C15QC?p=7840063#post7840063

On Z170 it may require slightly higher voltage.
Also since memory has no XMP profile then you have to set some sub timings manually for higher clocks.
3000 is usually working at 15-16-16 1.35-1.37V or something close like 16-16-16, 15-17-17.

As i said i tried everything. Even timings around 20 with 1.4 Volts. But everything above 2700mhz crashes instantly. It runs fine on 2700 with reduced timings but i can't even boot into windows with anything higher. It will only boot again when the board uses it's automatic clear cmos funktion or when i do it manually. It is completly unstable. And that is what i thought is a little bit strange. That there is no step between fully stable and completly impossible to boot from. I can do one more thing. MSI has an option in their mainboards for specific ic's. I used the samsung option because i thought that these are made from samsung. I can try hynix too. Maybe that can help.

 

[Mandrake4565]

Woomack would know better then I about the Ic's in those two sticks. From what I've read A400 are Hynix and A500 are Samsung. Again, Woomack is out resident memory guru so he can give a better answer.

 

[Tobalex]

I will test tomorrow a little bit more. Somehow i have to teach this kit how it can reach 3000mhz or higher There must be a way ^^

 

[Mandrake4565]

Have a look through Woomacks reviews here. I do not believe ha has tested those exact sticks but maybe you can see something with the secondary timings that might help.

 

[Tobalex]

Thank you, but again i already read tons of those guides and so on. I validated now that it is not me causing these problems. I did some further testing. The first thing i did was mixing my ram with the ram of my brother. Surpisingly it bootet in the first try @3200mhz. Sadly they won't run in dual channel mode. Still that one of these sticks run at these speeds made me wonder if it is only one stick that causes the problems. An yes seems like that is true. I testet the first stick and it had no problems running at 3200mhz with the same settings as with the ram from my brother. Than i testet the other stick and it didn't bootet if i set it above 2600mhz. So it is this one stick that causes the problems and not the settings. Sadly that means too that i can't do anything against that. And what is a little bit weird is that running them in dual channel i can push them to 2700mhz even though this one stick couldn't go further than 2600 in single channel.

Seems like i get trolled by my ram sticks

 

[Mandrake4565]

Well just like any other piece of Silicon such as Gpu's and Cpu's every one is different even if it's the same model. Apparently the one stick you have seems to be pretty good as opposed to the other. It is interesting that the one will only do 2600 by itself and 2700 in dual channel.

 

[Woomack]

Woomack would know better then I about the Ic's in those two sticks. From what I've read A400 are Hynix and A500 are Samsung. Again, Woomack is out resident memory guru so he can give a better answer.

Yes, you are right. I don't know how I was reading posts as I saw 2nd photo where are samsungs and for some reason answered to that

Anyway there are Hynix based kits on my list too and many examples. Actually all kits tested by me except Crucial are Hynix or Samsung.

If it's Hynix then rules up to ~3200 are about the same. Most kits on the market were on Hynix IC and later manufacturers moved to Samsung but product numbers are the same. Only these highest series on tight timings are still only on Hynix.

Hynix kits are under all popular settings so:
2666 15-15-15 1.20-1.35V
2800 15-15-15 1.25-1.35V , 16-16-16 1.20-1.25V
3000 15-15-15 / 15-16-16 / 16-16-16 1.35V
3200 15-15-15 / 16-16-16 / 16-17-17 1.35V

Depends from IC may require higher or lower voltage to make it. Also with higher clock they usually don't like higher voltage so you can set 3200 16-17-17 1.35V but the same at 1.45V may not boot at all. At the same time 3000 may work up to 1.6V+ without issues ( hard to say how long ).

In most cases all what matters is good motherboard, good BIOS and some time to set correct timings.