i7-4790k and 2400mhz RAM

[Programz]

I can't seem to get my 2400mhz ram, to work correctly at 2400mhz. I've tried downclocking them to 2133 as well, and still get game freezes regularly. The only time things are running smooth is when they're set to stock, which is at 1333mhz, and to be honest, it's bothering me that I can't run my RAM at full speeds.

CPU tends to sit around 4.1-4.4 when under load, and from my understanding, i shouldn't need to overclock the CPU for the RAM to work properly.

timing for 2400mhz is 11-13-13-31 @1.65v
I've tried manually setting all the timings and voltage's as well and still no luck.

Anyone have any ideas?

 

[Deleted member 217926]

What motherboard?

 

[The Paladin]

its probably a z87 or z97 board.. but yes what motherboard will help figure the issue.

 

[iamacow]

Technically according to Intel CPU specs anything over 1600 is overclocking. The memory controller is located on the CPU so when running a lot of dimms or high speeds you may need to bump up the I/O voltage. Your CPU may not be able to achieve 2400 but most likely you just need to do some tweaking.

"Memory speeds can be adjusted by DRAM frequency or X.M.P. (Extreme Memory Profiles). If you have compatible memory, I suggest setting the X.M.P. first before playing with any other voltage or CPU multiplier. If you do not have X.M.P. profiles, you can manually set the DRAM frequency and DRAM voltage. The following are advanced settings, which are voltage adjustments for the memory controller on the CPU. These adjustments are "System Agent Voltage," "I/O Analog Voltage," and "I/O Digital Voltage" that deal with high speed memory. Lower speeds like DDR3-1600 will not need or see the benefit from a raise in voltage, but for example speeds of DDR3-1866 and higher might stabilize a high overclock."

 

[Deleted member 217926]

A 4790K should handle DDR3 2400. As long as it's a good motherboard with the latest BIOS. The fact that it won't run at any speed beyond 1333 makes me wonder if he's maybe not using a Z chipset board.

 

[Programz]

Asus Z97-AR. I was trying to avoid overclocking my CPU with my RAM. I get a crash every single game when I use the XMP profile for 2400mhz.

 

[Programz]

Board says it supports up to 3200mhz OC, 2400mhz is a OC for the board, but it shouldn't be this difficult I feel.

 

[Programz]

its probably a z87 or z97 board.. but yes what motherboard will help figure the issue.

Nailed it on the guess by the way.

 

[Deleted member 217926]

Do you have the latest BIOS version installed?

https://www.asus.com/us/Motherboards/Z97AR/HelpDesk_Download/

Have you tested the memory with memtest? See if it throws any errors. Any at all likely mean a bad stick.

http://www.memtest.org/

Try one stick at a time. Same result?

 

[Programz]

Do you have the latest BIOS version installed?

https://www.asus.com/us/Motherboards/Z97AR/HelpDesk_Download/

Have you tested the memory with memtest? See if it throws any errors. Any at all likely mean a bad stick.

http://www.memtest.org/

Try one stick at a time. Same result?

Either I'm an idiot, or you cant mount these ISO's.

 

[Deleted member 217926]

What are you trying to mount it with?

http://www.imgburn.com/

 

[iamacow]

I'm telling you, just set the XMP profile and tweak the I/O voltage....This isn't the first time I've played with 2400 ram...

Also once again Intel does not support anything above 1600. You are overclocking the CPU memory controller by going to 2400. Thats why all the motherboard will say like 3200 but an * is used with (OC) next to it. I only came across one CPU that couldn't do 2400, the rest just needing I/O tweaking.

 

[pwron]

I'm having the same problem. Did you find the solution? 4790k 4.6 ·16gb 4x4 2400 · z97 gaming 5 , when 8gb removal seems to work fine. Thx

 

[iamacow]

If you had to remove memory, that means the memory controller was stressed. Increase the I/O voltage and it will be fine.

 

[pwron]

If you had to remove memory, that means the memory controller was stressed. Increase the I/O voltage and it will be fine.

Could you explain me better than I / O do I have to modify? thx!

 

[iamacow]

The BIOS allows these adjustments. "System Agent Voltage," "I/O Analog Voltage," and "I/O Digital Voltage" that deal with high speed memory. If you adjust these by +0.2v than it should be stable.

IO Analog is the one that deals with the memory controller, and system agent is the ring cache.

 

[pwron]

The BIOS allows these adjustments. "System Agent Voltage," "I/O Analog Voltage," and "I/O Digital Voltage" that deal with high speed memory. If you adjust these by +0.2v than it should be stable.

IO Analog is the one that deals with the memory controller, and system agent is the ring cache.

thank you I try and I tell you.

 

[Deleted member 217926]

Please start a new thread next time.

 

[pwron]

Please start a new thread next time.

ok, sorry!

 

[pwron]

The BIOS allows these adjustments. "System Agent Voltage," "I/O Analog Voltage," and "I/O Digital Voltage" that deal with high speed memory. If you adjust these by +0.2v than it should be stable.

IO Analog is the one that deals with the memory controller, and system agent is the ring cache.

your solution has worked I've been playing about 2 hours but in the end it has frozen. I try to increase +0.3?

 

[iamacow]

I would raise the Digital and I/O before going above .2+ I think the safe limit is .25 if I remember correctly. .3 will work but will eventually ruin the cpu memory controller.