Question Core i7 7700k with 32gb RAM only showing 16gb.

[Locoltaz]

Hi everyone, I updated my CPU to a core i7 7700k and now there is only 16gb of RAM showing instead of 32gb since I have four 8gb g.skill ddr4 3200. I would appreciate some help on this. Thank you in advance.

 

[Calvin7]

Memory modules sold as Single modules are only guaranteed to work if used as single modules. You may want to identify the memory you have by a part number in your post.

 

[Locoltaz]

Thank you and sorry about my ignorance how can I get the part number?

 

[Locoltaz]

The problem is all 4 memories worked together before 32 gb in total, then after I updated to a core i7 7700k it shows only 16gb of memory in system info when on the BIOS the DRAM STATUS shows all 4 of them.

 

[zSynt3x]

The problem is all 4 memories worked together before 32 gb in total, then after I updated to a core i7 7700k it shows only 16gb of memory in system info when on the BIOS the DRAM STATUS shows all 4 of them.

What's @Calvin7 is saying is that for working in parallel, all the RAM should have bought in the same order and set on a Dual Channel line. Different CAS level or kind of RAM (even on the same model) should have a different behavior, but it doesn't seems to be your case.

Try to to a CMOS or update the BIOS. What is your previous CPU and your actual mobo?

 

[InvalidError]

If it worked before swapping the CPU and only shows half the RAM after, my first two suspects would be poor contact in the socket / bent pin or bad CPU leading to one memory channel dropping out completely.

 

[Locoltaz]

If it worked before swapping the CPU and only shows half the RAM after, my first two suspects would be poor contact in the socket / bent pin or bad CPU leading to one memory channel dropping out completely.

Hi I already already runed the intel processor diagnostic tool to rule out any problem with the cpu making poor contact or any other issue but everything was fine 🤷‍♂️

 

[Locoltaz]

What's @Calvin7 is saying is that for working in parallel, all the RAM should have bought in the same order and set on a Dual Channel line. Different CAS level or kind of RAM (even on the same model) should have a different behavior, but it doesn't seems to be your case.

Try to to a CMOS or update the BIOS. What is your previous CPU and your actual mobo?

My previous CPU was a core i7 6700 and my mobo is the Asus Maximus Hero VIII.

 

[zSynt3x]

My previous CPU was a core i7 6700 and my mobo is the Asus Maximus Hero VIII.

Okay, your 6th mobo supports this i7 without any problem with an updated BIOs.
But I would suggest to check the PINs as stated above and clear the BIOS settings, since some profile could be configured for the old CPU.

 

[Locoltaz]

I'll do, thanks!!

 

[captaincharisma]

I'll do, thanks!!

have you tried reinstalling all the memory modules? you may have hit one of them while installing the new CPU and budged one of them out of place