Regarding mixed ram configurations

[Shemegory]

A while ago I bought myself some additional ram for my system. I picked up 2x4gb GSkill RipjawX (F3-12800"CL9D"-8GBXL) to expand upon my 2x4gb corsair vengeance (CML8GX3M2A1600CL9) because my friend told me it would likely work (and at the time there was no corsair vengeance in stock in the state), the problem is that it only works to an extent.

 

Only 8gb is ever useable in windows. I have tried every physical configuration of RAM, but it does not fix this. The individual sticks are detected by the motherboard in the hardware explorer (CPU-Z recognizes the 16gb too, but my motherboard states 2N CAS timing while it says 2T)

Motherboard also says the CAS timing for the G.skills is 11-11-11-28, not the advertised 9-9-9-24

 

For Reference I'm using:
z77 asrock extreme-4 motherboard

i5 3570k @ base clock

inno3d GTX 670

Antec "gamer" 520W PSU

 

RAM slotting

A1 Corsair vengeance

A2 Corsair vengeance (used)

B1 G skill ripjaws

B2 G skill ripjaws (used)

I'd appreciate any help I can get, thankyou.

 

Edit: http://imgur.com/a/IVnt6 Here is an album showing what I thought could be relevant in the UEFI

[JefferyD90]

you'll need to make sure they have the same banking s well as timings and frequency. Additionally ensure that the voltage is right.

[awesomes8wc3]

Does just the GSkill work and just the Corsair? What happens if you put a third module in?

Are you shutting down or restarting windows? That may seem unrelated, but in my experiences since Windows 10 shutdown is not a true shutdown (it's just hibernating) it won't pick up on small hardware changes like RAM, you have to press Restart instead.

[Shemegory]

Have you enabled XMP for your Gskills? They all have to run at the same timings I think.

XMP is enabled with everything set to auto (I've tried configuring it from "auto" to 2n in the profile, but it isn't a drop down and typing "2n" "2" "2N" and other variants just defaults to auto auto, not sure about what the syntax it could possibly want is)

 

you'll need to make sure they have the same banking s well as timings and frequency. Additionally ensure that the voltage is right.

I am unsure by what you mean about bankings

 

Does just the GSkill work and just the Corsair? What happens if you put a third module in?

Are you shutting down or restarting windows? That may seem unrelated, but in my experiences since Windows 10 shutdown is not a true shutdown (it's just hibernating) it won't pick up on small hardware changes like RAM, you have to press Restart instead.

When I originally installed them, I did a full dusting of my computer at the time. But I will attempt that again (any physical hardware configuration alterations are unlikely since it's 3am for me right now)

As in the OP, all 4 modules are in, only A2 and B2 are being used by the motherboard, while all 4 are detected by the motherboard in the hardware browser, and 16gb does show up in cpu-z

[JefferyD90]

bankings determine if the ram has memory on both sides. It is commonly referred to single banking and dual banking. Usually these types of rams won't mix and match easily. Usually single bank sticks are cheaper and perform worse in heavy threaded programs.

[Nena Trinity]

Try to enable link?