4790k cache clocking?

setter · 20 Mar 2015 at 23:45

Thinking of boosting the cache on my 4790k, chip runs grand at 4.7 on 1.300. Bench/game stable for months now. At default the cache voltage is very high, 1.27 but I lowered this to 1.200 without issue. Found cache to help with a few benchmarks. What's the max voltage for cache and is slightly lower than cpu multi still the best for stability as opposed to matching cpu multi of 47. Thanks in advance.

stulid · 21 Mar 2015 at 00:22

I always ran equal cache and core speeds 24/7.

setter · 21 Mar 2015 at 00:27

Yep stulid I remember seeing that on a gigabyte guide you done. Did you leave cache voltage on auto? Just on my Asus Z87 board, auto is extremely high. Tbh does it make much difference in normal use, I've only ran a 4400mhz cache for a few benchmarks such as super pi, cinebench.

stulid · 21 Mar 2015 at 01:12

I left Vring on Auto.

Vrin was 2.2V

And Virus (after I showed him how in post 1386) was also able to do equal core/cache on auto Vring - http://forums.overclockers.co.uk/showthread.php?p=26816537&highlight=username_stulid#post26816537

setter · 21 Mar 2015 at 01:26

Iirc stulid, vring on gigabyte is cache on asus Z8/97. And vrin is gigabytes version of what asus call input voltage? Ill be honest ive only clocked haswell on asus boards as thats what im familiair with. I know you are a user and fan of gigabyte boards. Hence i do get a bit confused sometimes with each vendors products. That and getting a bit older too.

stulid · 21 Mar 2015 at 01:33

That sounds right, Vring = cache and Vrin = input.

setter · 21 Mar 2015 at 01:45

Aye, tbh mate i wish they would use standard terms across the manufacturers range. Been trying all week to get the one in sig game stable at 4.8. 1.3100v with 1.88 input passes a few benchmarks with the gpu's clocked to 1202/1176, (stock volts for those). But bf4 fires up a 0x101 bsod after a few minutes. Now i think this is vcore related. And when adding more volts this chip can get pretty hot. And id hazard a good guess that i wouldnt need it clocked that high for games with sli 780's. But you know how it is, you always want that bit more.

8 Pack · 22 Mar 2015 at 22:33

Stulid is correct on terminology. Running around 2-3 multi lower does not effect efficiency and leads to more stability. In an ideal world 1:1 is the best option though.

megatron · 6 May 2015 at 17:56

Would u up vRing or vCore if you had an 4690k doing 4.5Ghz with x36/x37 uncore @ 1.26v set (1.272v reported bios) & auto vRing stable; whereas x40 uncore with 1.2v vRing same vcore is crashing with BSOD in BF3 multi. I did test it with 8 hours of h265 encoding before I realised BF3 multi was a much superior test than Asus realbench, h265 encode, intel tuning utility.

I haven't pressed it for a while just using 4.5Ghz x37 1600DDR for the time being (its 2400ddr). I want x40 uncore because at that setting I can use auto and it can use variable clock ratio like the core.

setter · 6 May 2015 at 17:59

What's the error code of the blue screen?

megatron · 7 May 2015 at 07:58

setter said:
What's the error code of the blue screen?

It was always the one concerning vcore x124 iirc.

setter · 7 May 2015 at 10:05

124 can be either vcore or imc voltages, Sa and ioa/iod. Any WHEA errors in event viewer that correspond to the time of the game crashing.

megatron · 7 May 2015 at 16:24

setter said:
124 can be either vcore or imc voltages, Sa and ioa/iod. Any WHEA errors in event viewer that correspond to the time of the game crashing.

I don't have an event log for that as it was a while ago, and I've stuck with stable settings for the meanwhile. The next step will be to try playing BF3 while increasing the uncore ratio and then when I hit instability either increasing vcore or vring.

8 Pack · 8 May 2015 at 23:02

Try core first!!

megatron · 10 May 2015 at 05:26

megatron said:
Would u up vRing or vCore if you had an 4690k doing 4.5Ghz with x36/x37 uncore @ 1.26v set (1.272v reported bios) & auto vRing stable; whereas x40 uncore with 1.2v vRing same vcore is crashing with BSOD in BF3 multi. I did test it with 8 hours of h265 encoding before I realised BF3 multi was a much superior test than Asus realbench, h265 encode, intel tuning utility.

I haven't pressed it for a while just using 4.5Ghz x37 1600DDR for the time being (its 2400ddr). I want x40 uncore because at that setting I can use auto and it can use variable clock ratio like the core.

I have just noticed that in Gigabyte easytune, it reports that I was using 1.05v +0.299v vRing, this is with auto vring (4.5Ghz, x37 uncore). So when I was testing uncore I was infact dialing down the vring with respect to auto.

I was looking at this guide (step 3):
http://www.overclock.net/t/1401976/the-gigabyte-z87-haswell-overclocking-oc-guide
Says that up to 1.35v vring is safe on air.

Right now I've dialed vring back to default 1.05v and need to do some testing with x37 uncore multi.

Made some progress. Took vring off auto and settled at +0.050v & vcore 1.265 (0.005 bump). Its stable

Next time I will try upping the uncore. I went from 1.3v vring (auto) to 1.1v so needed extra vcore, also knocked up the Vrin. Had a conflict with Asus smart doctor & nb-screen display crashing BF3 between rounds, so I uninstalled it (only fancied the ability change gpu voltage)

8 Pack · 15 May 2015 at 11:20

Use GTL to overclock on Giga boards. Remove all ASUS software you will get conflicts.