CPU Overclocking Help

[MarcelKapono]

I have an i5-4690k and an MSI Z97s SLI Krait Edition motherboard (updated to the latest BIOS, of course). My RAM is 2x4GB Corsair Vengeance LP 1600 (set to 1333 MHz per the instructions on the OC guide by @BigDay).

 

I have successfully stress tested my CPU at a 4.6 GHz overclock without touching the cache ratio or anything else, and it was stable. I am following the haswell and haswell-refresh guide by @BigDay). 

 

When I attempt to do anything to the CPU Cache ratio, the system has instability. I have gone as high as 1.4v for Vring and 2.02v for VRIN wth a cache ratio of 36, and still no cigar (I get the BSOD). 

 

It seems that if I even try to touch the CPU cache ratio, the system is unstable. Otherwise it is fine. The problem is that the core ratio is 46 and the cache ratio is 35 (that's the most stable core overclock and cache ratio I found).

 

I know there is supposed to be a 1:1 (or close to it) ratio, but currently my system is nowhere close. What can I do? Thoughts?

[BigDay]

On 12/3/2016 at 8:10 PM, MarcelKapono said:

I have an i5-4690k and an MSI Z97s SLI Krait Edition motherboard (updated to the latest BIOS, of course). My RAM is 2x4GB Corsair Vengeance LP 1600 (set to 1333 MHz per the instructions on the OC guide by @BigDay).

 

I have successfully stress tested my CPU at a 4.6 GHz overclock without touching the cache ratio or anything else, and it was stable. I am following the haswell and haswell-refresh guide by @BigDay). 

 

When I attempt to do anything to the CPU Cache ratio, the system has instability. I have gone as high as 1.4v for Vring and 2.02v for VRIN wth a cache ratio of 36, and still no cigar (I get the BSOD). 

 

It seems that if I even try to touch the CPU cache ratio, the system is unstable. Otherwise it is fine. The problem is that the core ratio is 46 and the cache ratio is 35 (that's the most stable core overclock and cache ratio I found).

 

I know there is supposed to be a 1:1 (or close to it) ratio, but currently my system is nowhere close. What can I do? Thoughts?

try moving the cache up while setting your core to 4.3 or 4.4 ghz instead. don't raise the vring, vcore or vrin too high. follow the guide.

[MarcelKapono]

On 12/5/2016 at 3:36 AM, BigDay said:

try moving the cache up while setting your core to 4.3 or 4.4 ghz instead. don't raise the vring, vcore or vrin too high. follow the guide.

Turning down the CPU ratio seemed to work. I'm stable running at 45 on the CPU and 43 on the cache. Vcore is 1.23, Vring is 1.255, and VRIN is 1.8.

 

On paper, it looks like I have a bit of room for more overclocking. If I keep the cache ratio the same and increase the core ratio (and add Vcore a little to achieve stability), will that improve my real world performance?  I've heard that cache overclocking offers little improvement other than in benchmarks. 

 

Thoughts?