The quest for 5Ghz

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The Derp

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I need your help! Again! I am now familiar with the very basics of overclocking (vcore, multiplier, temps, stability, etc...)

I've got a 4670K and a custom water loop.

My CPU at 4.8Ghz (1.275v-1.3v) seems stable. And in AIDA64 the temperatures remain in the 60s (ºC), rarely going past 70.

I pushed the frequency to 5ghz and i noticed the amount of Vcore required needed to be increased exponentially. At 1.4v it was almost stable (BSoD fairly early in AIDA64). But 1.4v is high from what i know, and my chip will rapidly degrade (correct?). On AIDA64 stress test the temperatures were in the 70s, sometimes going into the 80s.

I've heard that when you start trying to overclock that high, it becomes more than just "vcore and multipliers". I realised i need to actually start tweaking stuff in the BIOS if i want to to make it more stable.

Would anyone be able to assist me in tweaking my BIOS settings if i was to list all the settings. Or perhaps if someone could give me a rundown of the best settings? I'm hoping there is a way to make my CPU require less voltage if certain settings are changed (i probably sound like an idiot, but is it possible?). The thing is, i don't want to push it past 1.4v if i can avoid it. But if that's the only option, then can i get some advice on some tweaks so to make it more stable?

Just tell me any info you need and i'll tell you. Please help me out with this!
 
Solution
4Ryan6


Because if you do not have enough cooling to dissipate the heat you won't reach stability that's why the very first thing I said in this thread was:



A 240 rad can only dissipate so much heat and it reaches it's equilibrium point of Temp/Ambient!

My memory suggestions were...
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4Ryan6

4Ryan6

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I've heard that when you start trying to overclock that high, it becomes more than just "vcore and multipliers". I realised i need to actually start tweaking stuff in the BIOS if i want to to make it more stable.
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Not if you can keep it cool enough!

If you can keep it cool enough it does simply come down to Vcore and multiplier, it will take a certain amount of Vcore to stabilize at 5ghz anyway you look at it, but you really shouldn't have to go past 1.40v to do it.

At that high a clock your memory can be affecting the CPUs heat.

What is your memory speed you are running?
 
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The Derp

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2400mhz. I had a feeling it might contribute to the problem! What should i do? I've got XMP on profile 1. Change XMP to auto or enable? Can you change the frequency while it's on XMP?

If i change from XMP to auto then it drops to 1333mhz and i lose control over it. If i change it to manual i will have no idea what i'm doing D:

Also, my memory uses 1.65v for 2400mhz. Which is a lot of voltage.

Any ideas? I'll sacrifice RAM for the CPU, by the way. So is there any tweaks to the memory i can do to optimize my CPU for overclocking?
 
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4Ryan6

4Ryan6

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Try manually setting it to 1600mhz with timings of 9,9,9,24 with a CR (Command Rate) of 2T and drop the DDR3 slot voltage down to 1.50v, that will drop your CPU load temperature at least 4c maybe 6c or 8c.

You can lower temperature even more by dropping down to 1333mhz but lets try 1600mhz since that's what your CPUs memory controller was designed to run.

My advice to you is, if you want to run 5ghz take your advice from those doing the same.

 
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The Derp

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Wait so are you guys suggesting i change from XMP to manual? And then apply the tweaks that you said, Ryan? Or do i leave it at XMP and then do those tweaks?

Also, my command rate only lets me input "2" not "2T". Or is 2 the same thing as 2T?
 
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The Derp

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Eh... No difference from what i'm seeing. Temps are still the same as well. Still crashes early in AIDA. Still using the same 1.4v.

I'm pretty sure i've done what you suggested. Timings are 9-9-9-24 with a command rate of 2. DRAM voltage at 1.5v.

I'm assuming my hopes and dreams of 5ghz have been crushed already ;( *chucks PC in bin*
 
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4Ryan6

4Ryan6

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You should have seen a load temperature drop going from 2400mhz to 1600mhz you removed the additional memory overclocking heat from the CPUs memory controller?

List your memory brand and exact model #s?

You listed custom water loop, so what are we talking here as far as radiators and do you have the GPU and CPU on the same loop?
 
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The Derp

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Memory: G.Skill Trident X 16GB (2x8GB) DDR3 F3-2400C10D-16GTX
That's the exact model.

The temperatures MAY have changed, but from what i'm seeing it doesn't look like it. They jump around a lot so it's hard to tell as well. But still, that doesn't change the fact that it isn't stable regardless, right? It still hasn't made a difference to how much vcore i need, as far as i know.

 
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The Derp

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XSPC Raystorm waterblock
XSPC D5 Photon reservoir + pump
XSPC AX240 Radiator
1/2 inch tubing

GPU is not part of the loop. I've got the water flow in this order:

Pump + Reservoir --> Radiator --> CPU --> Pump + Reservoir

Not sure how that helps with my quest for stability though D:
 
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4Ryan6

4Ryan6

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Because if you do not have enough cooling to dissipate the heat you won't reach stability that's why the very first thing I said in this thread was:



A 240 rad can only dissipate so much heat and it reaches it's equilibrium point of Temp/Ambient!

My memory suggestions were to lower your load temperature so you would have more headroom to overclock the CPU, but since you say there is no temperature drop then your only option is to increase Vcore past 1.40v, roll the dice and hope you do not screw it up.

I suggest you just get satisfied with with the 4.8ghz overclock you already had or add some radiator cooling field to lower the temperatures, because your temps will skyrocket after 1.4v if you cannot keep it cool.

In all actuality a custom water loop running only one 240 rad is really no better cooling than a Noctua NH-D14 air cooler running 110cfm cooling fans.

Look at my temperature in my CPU-Z validation that's how I am running 5100mhz!
 
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The Derp

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But let's say i did have adequate cooling, pushing the vcore above 1.4v will significantly degrade the chip, wouldn't it?

I can make it sit stable at 1.425v, but that'll kill my chip fast.... How long do you think the lifespan would be (just a wild guess) at 1.425v?

EDIT: And DAMN you've got a lucky chip!
 
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4Ryan6

4Ryan6

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What are your load temps at that voltage?

Maybe 2 years? I'm not sure? Could be 3, however you'll probably upgrade again way before it dies on you.

Regarding mine.

It's not a lucky chip it's the cooling I am running, I am running below ambient cooling, when you can drop the temperature lower you can actually increase a multiplier using less voltage.

I was in hopes since you were already at 4.8ghz if we could drop your CPU temperature just a little you could get to 5ghz below 1.4v, but I did not realize you were only running one 240 radiator, that's My Bad I should have asked that from the beginning.

Could you add more radiator to increase the fin cooling field?



 
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The Derp

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Load temps are in the 80s at that vcore.

Eh... Thanks for the help anyway though. Increasing the cooling field isn't an option for me. I really can't do anything more to the temperatures other decrease ambient temperatures a lot. But i don't want to freeze.

I've concluded my CPU is completely weird. Runs 4.8Ghz at 1.3v completely stable. At 5Ghz and 1.375v it's able to run games fine, but under stress tests it fails. I've even brought up the vcore to 1.475 and it still BSoD damn fast in stress tests.

Thanks for the help anyway though! Sorry for wasting your time... I feel pretty bad.
 
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