T-man
Senior Member
Hi everyone
I recently bought a 32gb pair of Corsair Vengeance Pro 2400mhz DDR3 for my i7 4790k system. I am running into stability issues though and I have tried a lot of testing the past week with no luck. I will list my system specs below.
i7 4790k
Deepcool Gammaxx GT with Thermal Grizzly Kryonaut thermal paste
MSI Z97-GD65 Gaming
32gb (4x8gb) Corsair Vengeance Pro 2400mhz DDR3
MSI GTX 1080 Gaming X
EVGA B1 500w 80+ Bronze
I'm just curious to see if anyone here is able to help me out. I would love to have this system stable with a slight overclock, with a slight overclock meaning 4.5/4.6ghz and 2400mhz DDR3 ram. I will share some info from my tests below.
My CPU runs at 1.181v with turbo mode options enabled. I managed to reach a maximum stable clock of 4.7ghz at about +-1.235v, the lowest being 1.230v. 4.6ghz was stable at +-1.205v. I think dropping to 1.195v caused instability. 4.5ghz was stable at +-1.15v but showed instability at 1.13v. I didn't manage to reach a stable clock on 4.8ghz. I think I pushed the volts to 1.305v and that's where I backed down, as I'm not comfortable overclocking that much and I am running an air cooler. I may have tried that OC with adaptive voltage instead of override, which may have caused instability (I read up later that testing high voltage with adaptive isn't a good idea so I won't try that again lol). I am not considering watercooling.
I used HeavyLoad to stress the CPU and RAM. My temperatures reached a max of 80°C and averaged at around 78°C when testing yesterday during the day. I remember tests also averaged at 76°C. This was with 4.5ghz with voltages on auto (setting my voltages to 1.15v doesn't seem to help much with adaptive voltage. The voltages jump back to 1.181v almost as if I have enhanced turbo enabled. Is there anyway to override this but still have a dynamic/adaptive voltage and clock ratio?)
Just to add, My CPU Ratio Mode is set to dynamic mode.
As for Ring Ratio and Ring Voltage. I left this on auto. I have read that having the ring ratio on 40x is a good idea, but my issue comes in with memory stability and I don't know if setting this will help.
SA Voltage and IO Analog and Digital Voltages. I found the most stability leaving the SA voltage on auto and setting the IO voltages at an offset of 0.180v. Any higher caused instability. I believe IO voltages at an offset of 0.150v was also pretty good. My SA Voltage's ultimate low seems to be 0.8v, so it would set an automatic offset of 0.2v, increasing it to something slightly above 1.0v. There seems to be nice headroom for SA voltage but I noticed increasing this didn't improve stability. I set IOA/IOD Voltage Boost at +100mv. This showed the most stability.
I tinkered with DRAM voltages between 1.65v and 1.7v but this didn't seem to help at all, so I left this at 1.65v. Just a quick note on the BSODs and crashing. The BSODs I received were all memory related. The crashing would sometimes be an instant restart (black screen and reboot). As I reached more stability my explorer would sometimes freak out a little and I would have to restart.
I even played around with the C-State options. I tried everything from c-state 2-7 (even 7s). C1E support was enabled. EIST is enabled. None of these options helped me really. Currently I'm running these settings at default which sets C-State options to auto and disables C1E support. EIST is still enabled.
I have tried setting my ram frequencies manually and I also tried it with XMP. It doesn't seem to help much. It might just be me, but setting it manually did seem to be most stable. I tried 2400mhz 11-13-13-31 and even 2133mhz 11-13-13-31. 2133mhz was very stable, but when I was switching tabs/tasks while gaming last night, it crashed on me and I was just like wtf and I went to bed.
On an added note, 1333mhz was obviously stable from what I've seen lol.
The last thing I am thinking, could it be my PSU being at its limits? Would upgrading to a 650w PSU possibly solve this?
Please help if you have the knowledge. I feel like I have tried everything under the sun. It's not even like I'm doing a hectic overclock. I doubt my CPU is bad. It seems to be pretty good actually. It might be a weak IMC? But to me it seems like it's really almost stable. Maybe the PSU is to blame.
Last thing, I have tested this memory several times using Memtest86 and the Windows Memory Diagnostic Tool and I haven't received any errors. The ram is not faulty.
Is there anything I may have missed?
Thanks for reading and I appreciate any responses.
I recently bought a 32gb pair of Corsair Vengeance Pro 2400mhz DDR3 for my i7 4790k system. I am running into stability issues though and I have tried a lot of testing the past week with no luck. I will list my system specs below.
i7 4790k
Deepcool Gammaxx GT with Thermal Grizzly Kryonaut thermal paste
MSI Z97-GD65 Gaming
32gb (4x8gb) Corsair Vengeance Pro 2400mhz DDR3
MSI GTX 1080 Gaming X
EVGA B1 500w 80+ Bronze
I'm just curious to see if anyone here is able to help me out. I would love to have this system stable with a slight overclock, with a slight overclock meaning 4.5/4.6ghz and 2400mhz DDR3 ram. I will share some info from my tests below.
My CPU runs at 1.181v with turbo mode options enabled. I managed to reach a maximum stable clock of 4.7ghz at about +-1.235v, the lowest being 1.230v. 4.6ghz was stable at +-1.205v. I think dropping to 1.195v caused instability. 4.5ghz was stable at +-1.15v but showed instability at 1.13v. I didn't manage to reach a stable clock on 4.8ghz. I think I pushed the volts to 1.305v and that's where I backed down, as I'm not comfortable overclocking that much and I am running an air cooler. I may have tried that OC with adaptive voltage instead of override, which may have caused instability (I read up later that testing high voltage with adaptive isn't a good idea so I won't try that again lol). I am not considering watercooling.
I used HeavyLoad to stress the CPU and RAM. My temperatures reached a max of 80°C and averaged at around 78°C when testing yesterday during the day. I remember tests also averaged at 76°C. This was with 4.5ghz with voltages on auto (setting my voltages to 1.15v doesn't seem to help much with adaptive voltage. The voltages jump back to 1.181v almost as if I have enhanced turbo enabled. Is there anyway to override this but still have a dynamic/adaptive voltage and clock ratio?)
Just to add, My CPU Ratio Mode is set to dynamic mode.
As for Ring Ratio and Ring Voltage. I left this on auto. I have read that having the ring ratio on 40x is a good idea, but my issue comes in with memory stability and I don't know if setting this will help.
SA Voltage and IO Analog and Digital Voltages. I found the most stability leaving the SA voltage on auto and setting the IO voltages at an offset of 0.180v. Any higher caused instability. I believe IO voltages at an offset of 0.150v was also pretty good. My SA Voltage's ultimate low seems to be 0.8v, so it would set an automatic offset of 0.2v, increasing it to something slightly above 1.0v. There seems to be nice headroom for SA voltage but I noticed increasing this didn't improve stability. I set IOA/IOD Voltage Boost at +100mv. This showed the most stability.
I tinkered with DRAM voltages between 1.65v and 1.7v but this didn't seem to help at all, so I left this at 1.65v. Just a quick note on the BSODs and crashing. The BSODs I received were all memory related. The crashing would sometimes be an instant restart (black screen and reboot). As I reached more stability my explorer would sometimes freak out a little and I would have to restart.
I even played around with the C-State options. I tried everything from c-state 2-7 (even 7s). C1E support was enabled. EIST is enabled. None of these options helped me really. Currently I'm running these settings at default which sets C-State options to auto and disables C1E support. EIST is still enabled.
I have tried setting my ram frequencies manually and I also tried it with XMP. It doesn't seem to help much. It might just be me, but setting it manually did seem to be most stable. I tried 2400mhz 11-13-13-31 and even 2133mhz 11-13-13-31. 2133mhz was very stable, but when I was switching tabs/tasks while gaming last night, it crashed on me and I was just like wtf and I went to bed.
On an added note, 1333mhz was obviously stable from what I've seen lol.
The last thing I am thinking, could it be my PSU being at its limits? Would upgrading to a 650w PSU possibly solve this?
Please help if you have the knowledge. I feel like I have tried everything under the sun. It's not even like I'm doing a hectic overclock. I doubt my CPU is bad. It seems to be pretty good actually. It might be a weak IMC? But to me it seems like it's really almost stable. Maybe the PSU is to blame.
Last thing, I have tested this memory several times using Memtest86 and the Windows Memory Diagnostic Tool and I haven't received any errors. The ram is not faulty.
Is there anything I may have missed?
Thanks for reading and I appreciate any responses.
