4770k - need direction to take if further

Doug2507 · 15 Sep 2013 at 20:21

Hi,

Looking for advice/direction on where to go with clocking my 4770K on an mPower as i'm loosing my way a little. (BIOS 1.5)

Story so far...

All stress tests done with XTU.

CPU seems to be slightly better than the going average from what i can gather. [email protected] was completely stable (+XMP) & i could boot no problem with [email protected].

Over the course of the last few days i've been tuning the cpu only. I've left uncore at auto the whole way and reduced ram to 1333Mhz 1.5v with XMP disabled. RAM is G.Skill Trident X 2x8GB@2400Mhz.

I've managed to get [email protected] 8hr stable. I'm now trying to increase my cache multi but am stuggling with it. I initially set it to 1:1 with uncore at 1.245v. Managed to fail this from 48-45 and started to rethink the plan of attack. I've now set vcore slightly higher to 1.25v and kept uncore at 1.24v.

I'm now 1hr away from a 9hr pass with uncore at x40. Nothing great there! (VCCIN 1.9v, 1.92v on multimeter)

I've also had a play about with it at higher settings just to see if it has any potential to run higher. The 5.0Ghz shot below ran cinebench but couldn't run XTU bench, the 4.9Ghz ran both but not stress stable. The 5.0Ghz resulted in a rather rapid BSOD 101 with XTU. I'm sure the cpu has more potential locked away in it that it's at now but i'm not sure how to approach moving it higher.

I still seem to have headroom available temp wise though thanks to a delid.

Any recommendations would be greatly appreciated. Any more info needed just let me know and i'll fill in the blanks, also BIOS screenshots if needed. Vcore and vring by the way read about .02v higher on the multimeter. 1.27vcore/1.26uncore for 1.25/1.24 in BIOS.

Current:

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x49:

x50:

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I only use this rig for gaming, ripping audio cd's & surfing the web etc so not looking for 28.1 stable!

Recorded 32M at 6m33s, can't remember if that was on the 4.9 or 5.0! Should have taken a screenshot!

XTU has just passed the current config btw.

Doug2507 · 15 Sep 2013 at 20:50

Doug2507 · 16 Sep 2013 at 07:34

I've had the vcore up to 1.36v off the m-m with 5Ghz but can't get it anywhere near stable with BSOD 101's. Cache was left at auto when i did this. (x39 etc) and VCCIN 2.0v. I did think if bringing the cache up would help stabilise the CPU but i wasn't having much luck bringing it up with 4.8Ghz so decided to forget 5Ghz for now.

Right now i've just passed x41 cache, same voltage. Away with work for two weeks so i'll move on to x42 next time home. With vcore being quite reasonable for 4.8Ghz can i push uncore voltage past vcore to take the cache up?

The reason for 1333Mhz was following a guide on the net. Recommended doing cpu->cache->RAM screwing the RAM all the way down to take it out of the equation for cpu/cache. Would having it set so low affect stability for tuning cpu/uncore? XMP works a treat with no issues at all. Would you recommend actually running XMP or setting RAM to XMP settings?

With temp not being an issue, how far do you reckon i should push this one with core/vring/VCCIN?

Doug2507 · 16 Sep 2013 at 12:56

Haha, did start to question it! Sound, i'll get back on it when i get home. Is it wise to hit 1.45vcore/1.35vring? If it ends up taking that much to be stable at 5.0ghz i think i'll call it a day with 48 unless 49's just a small step away.

Doug2507 · 16 Sep 2013 at 15:48

Cool. Is that defo 1.4v on vring as i thought 1.35v was max? (vcore being the slightly higher?). Is this mainly governed by temp then?

Will vcore need to be increased with vring (not talking about scaling) to get the cache up or leave at what was found for a stable cpu clock? If it needs to be increased slightly with vring what's the best way to determine which needs a lift?

When does VCCIN come into play?

And finally, with regards to priority on the RAM for Haswell, speed or timing? Or best combination of both?

Thanks for the guidance, much appreciated!

Doug2507 · 16 Sep 2013 at 17:38

Sound, cheers dude. I'll see if i can get 4.9Ghz below 1.35 stable, if not then 4.8ghz seems to be the sweet spot on this one.

2 questions left, 1st being should i enable XMP or just manual to XMP settings then tune from there, 2nd being will i need to increase vcore at all whilst bringing the uncore up?

Doug2507 · 18 Sep 2013 at 12:28

Slightly on/off topic, my 780's are being throttled by power and thats running them at +38mv (1254 boost). Temp difference between the 2 cards is 10deg on load with the hottest hitting 87deg. As such i've been thinking about sticking a W/C loop and flashing the cards to get the voltage up over 1.2. (one can't get past 1.187, the other hit's 1.2).

Looking into cooling options (had a two loop setup back when i had my 9650/280's) and a magicool 3x180 seems to be the best option for std w/c in the FT02. However, i'm thinking about using a water chiller instead which should yeild lower temps.

This makes the question arise of if the cpu temps are dropped right down (hit sub 80deg at the moment if i bench using xtu at x49/50 but not stable), would my max voltage for the core increase or am i still limited by the amount of voltage i can apply?

Doug2507 · 2 Oct 2013 at 07:21

Failed XTU just before 8hrs. 124 Hal. All settings as per 1st pic.

Thoughts? Increasing vcore or VRIN seems to loose stability (XTU bench starts dropping cores) and any significant increase starts BSOD'ing. Feels very much like these settings are 'on the fence'. I had SA/IOA/IOD at +.15 but found better stability with +.05.

Vdroop set at 100%, SB PLL, Filter PLL disabled, core/ring on override, VR ovp/ocp disabled, all other power settings (over/under current & power) on auto, pch on auto.

Doug2507 · 2 Oct 2013 at 18:05

Yeah, agree with you on the voltage. I ended up past my final vcore and started BSOD'ing all over the place. Dropped it right down and no problem. Also found lower SA/IOA/IOD helpful as well but i've not done the RAM yet so may need to raise them back up.

I was fairly close to getting a chiller but there's a sprog on the way which will end up being in this room so don't want to go making holes in the ceiling for running tubing when it won't be a permanent fixture.

I've ended up just going for a std W/C setup with a Alphacool 3x180, D5, dual res and EK blocks. CPU isn't too bad as is but the gpu's need water on them before i flash them.

Played a couple of hours worth of BF3 this afternoon, no problems at all. Just installed BF4 so we'll see if it's still stable soon enough!

Doug2507 · 4 Oct 2013 at 12:19

Right, new problem and one i can't get my head around.

x264 and 9hr+ xtu stable. Sound, let's move to uncore.

Change multi from x34 to x35 (static), bsod.(1.15v override). Infact bsod all the way up to just under 1.4vring. Checked with x36 and same. Back at x34, no problem, tested with ram at 2400 out of curiosity as well and no problem.

Any ideas cause i'm all out!

On a side note i've had a few 101's but some were odd, tcpip, tdx, pciidex & ntfs. The pciidex came after i removed all nvidia drivers after having a 101 with nv. Chkdsk has also run a couple of times, 1st when i increased uncore. Something to do with attribute 128. Possible corrupt OS? All seems fine on x34 though. Deliberating whether or not to format and do a fresh install, just a pita re-installing everything again.