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Extreme6 Z170 RIPJAWS V 3000 - Compatibility
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J Z View Drop Down
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    Posted: 20 Oct 2016 at 3:09pm
Originally posted by parsec parsec wrote:

This is the second or third OC Tweaker screenshot I've seen recently of an ASRock Z170 board, that shows the Cache speed higher than the CPU speed.

The Target CPU speed is shown as 4000MHz.

The Target Cache speed is shown as 4100MHz.

The description of the CPU Cache Ratio in the OC Tweaker screen states the maximum (ratio) should be the same as the CPU ratio.

When the PC boots with those settings, the Cache will only be at 4000MHz, the same as the maximum CPU ratio. So that Cache Ratio setting is ignored.

EdOz, did you set the CPU Ratio to 40, and the CPU Cache Ratio to 41? If not, I'm wondering where it comes from.

Hi @parsec

Is normal with i7-6700K Smile
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Forgot to add this before!
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Hey Parsec, I hadn't changed ANYTHING on the BIOS other than tried to get the RAM to work at the 3000 instead of 2133... no idea where the CPU ratio was at as I wouldn't even be game to try and play around with it seeing as I know next to nothing about OC'ing. Is that something I may want to change? 

I followed Imakuni's suggestion and voila! It worked!!! I updated the BIOS and things worked almost straight away... almost 'cause the 1st time the memory still remained at 2133 even if on the BIOS mainpage it stated it was at 3000. Weird. Reset everything (XMP profile 1 and auto) and it 2nd time around did the trick. 

I also used the EZ OC feature to set my CPU to 4.4, it has other options like 4.6 and 4.8 etc but like I said, I'm very new to OC'ing and for now I feel like baby steps are the way to go for me. I do have a very decent cooler so if the computer struggles once I start editing my videos I may have to look more into the OC side of things and a lot more questions will be coming your guys, sorry! ;)

Thanks heaps everyone for trying to help me figure this one out! Especially Imakuni for coming up with the goods!
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Points: 4996 		Post Options Post Options   Thanks (0) Thanks(0)   Quote parsec Quote  Post ReplyReply Direct Link To This Post Posted: 20 Oct 2016 at 11:42am
This is the second or third OC Tweaker screenshot I've seen recently of an ASRock Z170 board, that shows the Cache speed higher than the CPU speed.

The Target CPU speed is shown as 4000MHz.

The Target Cache speed is shown as 4100MHz.

The description of the CPU Cache Ratio in the OC Tweaker screen states the maximum (ratio) should be the same as the CPU ratio.

When the PC boots with those settings, the Cache will only be at 4000MHz, the same as the maximum CPU ratio. So that Cache Ratio setting is ignored.

EdOz, did you set the CPU Ratio to 40, and the CPU Cache Ratio to 41? If not, I'm wondering where it comes from.
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Thanks for the replies! I checked on the AsRock app thingy and it didn't mention any BIOS update... Im at work now so I can't check what version I have atm but will check later!
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@Imakuni

+1 Smile
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Originally posted by EdOz EdOz wrote:

Then I changed from DRAM Frequency from Auto to DDR43000

It then wouldn't even post up... it took a good 10min after a couple of hard restarts to get it to post up which I'm assuming was the BIOS doing some fail safe thing once it realized something was up.

Even after all this, I still have the same results... so basically, stuck on 2133.

I have now disabled XMP and gone put everything back to auto and the PC booted up normally again, so I'm starting to think this RAM is just not compatible at all which sucks a LOT
If you manually change the frequency, you also have to manually input the timings and voltage, otherwise it'll never post.

At any rate, try a Bios update. Skylake was pretty finnicky with memory when it first came out.
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XMP fail,

Please P7.00 or P2.60 BIOS Update Wink
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Ok, here are some of the screenshots:


This is what I tried 1st following JZ's suggestion

https://goo.gl/photos/4NiBTN7KSXzmKRke9

The computer took a while to post up once I enabled XMP (3-4min and that's on a SSD and Win10)

Then I changed from DRAM Frequency from Auto to DDR43000

https://goo.gl/photos/16KJovYj6hS3MLWM8

It then wouldn't even post up... it took a good 10min after a couple of hard restarts to get it to post up which I'm assuming was the BIOS doing some fail safe thing once it realized something was up.

Even after all this, I still have the same results... so basically, stuck on 2133.

I have now disabled XMP and gone put everything back to auto and the PC booted up normally again, so I'm starting to think this RAM is just not compatible at all which sucks a LOT
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Originally posted by EdOz EdOz wrote:

How do I know what speed it is running on?
In CPU-Z, Frequency = DRAM Frequency*2. So in your case, 1066*2 = 2133. Your kit, for whatever reason, is still running at 2133mhz.

Are you sure you've enabled XMP? Can you take a couple pictures of your BIOS? Because if it was enabled, it should have gone into 3000mhz (or, in CPU-Z, 1500).
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