Intel God's "Quick & Dirty" OC Guide to 4.4Ghz with Haswell

Page 14 - Seeking answers? Join the Tom's Hardware community: where nearly two million members share solutions and discuss the latest tech.
Toggle sidebar Toggle sidebar

Were you able to achieve stability at 4.4Ghz?

  • Yes

    Votes: 2 3.7%

  • No

    Votes: 52 96.3%
  • Total voters
    54
And my new cooler does work alright but with the difference of where Core 0 is constantly 4-7 degrees higher than the other Core's thats with my new cooler... Might have to re-sit my block, something is not right.
Click to expand...

That is normal. Nothing to be concerned with.

Yogi
 


Man, I'll tell you. I listened to them on this CPU and didn't use anything expect "aida64", and "RealBench". I used aida64 to test stability, and RealBench to benchmark as I did making sure I was improving.

I've had rock solid performance / stability running my system 18 hours a day. It's been 2 weeks (give or take) with a very fair amount of gaming, and some video editing without a single performance/stability issue.

I don't have a very aggressive OC though, 4.2 atm. Main reason being, I love to have super low temps, and this OC allows for that. However, my RealBench score showed a marked improvement from the OC and my stability proves to me that you don't need "p95" or "ibt" to get these at a stable OC.

For new people, remember to watch your stability test for at least a 2 hours before leaving it unattended. P95 especially will jump up 20c or so at that hour - 1:20 mark. IBT seems to hit high temps right off the bat.

I love this CPU btw. Sorry my old FX chip =/
 
Okay. I'm burning Aida64 right now. 1 hour and 10 minutes into a CPU, FPU, Cache, and Memory test.

Current BIOS settings are:

43x Core multiplier
1.27v Core Voltage (manual)
35x Cache Multiplier
1.27v Cache Voltage (manual)
1866 mhz DRAM frequency (Not overclocked)
Everything else is on auto. (Other some DGHI+ settings)

Average temps are about 67c. The Max temps are (per core) 83, 81, 78, 72c.
BIOS version: 1402 ASUS Maximus VI Hero
CPU: I5-4670k

How long do I need to let this test run?

Edit:
I ran the test for 3 hours and it did fine. So I set my Cache multiplier to 40x and my DRAM to 2133mhz. It is testing now. I'm going to let it run while I'm at school. The temps where fine for the 3 hour test and I haven't changed any Voltages so I'm not worried about temps. It should be fine. If this passes, I'm going to try for 44x Core at 1.30v.

Edit:
Test passed. I changed to adaptive and played some Payday 2, no hiccups. Runs great. I suggest Aida64. Seems to be hard enough on the chip, but not too soft. Prime95 and IBT are just a little too intense for testing. Too hot also. My idle temps are mid 30s and under game load they are in the low 60s.
 
Re-post with Update.


=====================REPOST===============================================
I am in a similar situation, after hours of adjusting and running Prime, I have found the following results-

4.2 core / 4.0 cache required volts
1.28vcore / 1.19vcache / 1.80vinput
Heat: 80 c under full load (running Prime95 small FFT for 20 hours)

4.3 core / 4.1 cache required volts
1.32vcore / 1.19vcache / 1.80vinput
Heat: 84 c under full load (running Prime95 small FFT for 12 hours fo far)

I don't think I will ever make it to 4.4. 🙁

In case anyone is wondering, I am using an Asrock z87 Extreme4 motherboard.


=============UPDATE AS OF 04/15/14====================================
I did a fresh install of Windows 8.1 and started getting random hal.dll & ntoskrnl.exe BSOD's. After doing some research online, it would appear that these errors are related to the CPU so I went back to stress testing...

Downloading the latest Prime95 (28.4) 64bit. I ran small FFT and the temps went up to 100c straight away! :ouch:
I immediately stopped the test and went down to my 4.2 settings, same result - straight up to 100c. I then downloaded a previous version (25.11) and ran small FFT and the temps were barely hitting 80c. Going back and forth between the two I tried doing a blend on the latest and got instant BSOD and then went to 25.11 and ran blend, but crashed after an hour or so. So now I am thinking I am back to square one in terms of being stable. :??:

Doing a bit of reading this morning, I hear a lot of people are losing their OC when moving to Windows 8.1... I am going to spend some time tonight trying to dial it back in, but wanted to see if anyone else has this issue and has any recommendations?
 



Same here i have the same mobo when i try to hit 4.4 either i pass IBT n fail prime or i fail IBT so i left it at 4.3
 


Hey Jay,

Are you running Windows 8.1 also what are your BIOS settings?
 



No i am using windows 7 ultimate to get to 4.3 i have it set at 43 cache at 35 volts at 1.28 cache 1.20 input volt 2.1
 
Hello i would like some help here if anyone could give me a hand; i was able to reach desktop of W8.1 after folling this guide , then i did IBT but my highest core reached 94 °c , i didnt really care about it since ik temps go crazy with IBT and with Prime 95 the max was 86°c .But anyways the thing is that i was able to run IBT 10 times with no BSOD but Prime gave me a BSOD after around 8 mins sometimes even right away after starting the test.

Then i started playing and i always end up crashing, the game freezes with a horrible noise and it reboots the PC
it shows this error
http://www.reviversoft.com/blog/wp-content/uploads/2013/09/whea_uncorrectable_error_windows_8.jpg

Here are my settings.
Core Mulit: 44
Core Volt: 1.25
Cache Multi: 42
Cache Volt: 1.20
Input Voltage: 1.90
DRAM Frequency: 1600 at 1.5v (deafult)

Idk what to do is very stressing to see that Prime keeps making u BOSD or even playing when u think everything is fine, also ran Cinebench and didnt have a problem, i guess im close to achive a stable OC? but man i just hope i could do it already so i can continue with my life lol

BTW should i Manually put the CPU VRIN Overide LLC to something like High or Extreme?? Its set to auto
also i have read that incresing the RAM Voltage could help but idk if this is my case ... and idk how much i could increase the Voltage of a RAM without damage it.
 


DO NOT increase the ram voltage if it doesn't specify what it is rated to. Usually overclocking based ram modules go to 1.65v.

In regard to your CPU try dropping your cache multiplier to the default and then re-running all tests.
 


Ok i did what u suggested but it crashed right away after clicking the start botton on IBT program and the BSOD showed the error : "Clock_watchdog_timeout" , now i tried Vcore 1.28 with Chache Voltage at 1.22. So far so good , 40 Mins Prime didnt crash me and i did the 10 IBT runs succesfully.
I cant leave my pc 24 hrs straight doing Prime 95 as some ppl suggest... But so far i havent get any BSOD. Idk maybe when i comfirm it is fully stable i could tweak my voltage a bit more.
Didn't touch the RAM voltage either.
 


So I pushed the cache voltage up to 1.21 and it's running stable. Running AIDA64 stress test helped me identify it was the cache that was giving me issues. Currently stable at settings below-
4.3 core / 4.1 cache
1.32 vcore / 1.21 vcache / 1.80vinput

 
So I pushed the cache voltage up to 1.21 and it's running stable. Running AIDA64 stress test helped me identify it was the cache that was giving me issues. Currently stable at settings below-
4.3 core / 4.1 cache
1.32 vcore / 1.21 vcache / 1.80vinput
Click to expand...

What about your temps?

Yogi
 


Temps hit 82c while running AIDA64 Stress Test with CPU, FPU, Cache, System Memory for 6 hours.

 


The most voltage you should send to your ram is 1.635. Almost all mobos add at least .015V
 


Well is fine, i didn't have to increase the RAM Voltage after all so i leave it in auto and got my CPU stable at 4.4Ghz i guess i just needed more Vcore, Hopefully 1.28 Vcore on air isnt too much but im still a bit worried about the Cache Voltage i had to put at 1.22v and when i did that it turned yellow in my BIOS which i guess it means is a little bit high.
Aside from that Temps has been great i usally remain under the 70s degrees while playing sometimes even under the 60s but that depends on the weather because my room can get really hot sometimes or really cold.
While prime i average at 85°c mostly.
 
Can someone explain a bit more on what cache multiplier does?
From what I've been reading on this thread the lower the cache mult your system becomes more stable? And also what is the reason behind in picking 35 for cache mult. I have my 4670k OC to 4.5ghz(still trying to find stable settings) and I've tried setting it to 44 cache, Auto(which puts it at 38) and 35 like op recommended. I honestly can't see any difference other than the fact the voltage for cache really goes up with a higher mult. this could be because I have cache voltage set to "auto"(should i have this setting fixed?) When i had cache at 44 I believe the cache voltage went up to 1.296 or something like that and at 38 it stays at 1.085-1.100 ish or lower

My settings at this time.(Test in progress)
Core Mulit: 45
Core Volt: 1.230 (Adaptive)
Cache Multi: Auto (Sets it to 38)
Cache Volt: Auto (Aida64 reads it 1.085)
Input Voltage: 1.800(bios) (Aida64 reads it 1.824)
Current Load Temps 40-50c (Occasional Spikes at 55ish)
Max temps on Aida64 40min run vCore1.225(Manual) cores 68c, 71c, 67c, 62c

Thanks
 
Ok hey guys I want to oc my CPU.I have 4670k with asrock z87 extreme 4.if any one have the same mobo can u plz post the screenshots so I can try out ur settings

Thanks
 


The Cache Multiplier, along with the Base Clock, sets the frequency of the "Ring Bus" between the CPU cores and the L3 cache. More complete details in this story: http://www.anandtech.com/show/6355/intels-haswell-architecture/10

For some, the lower the Cache Mult., the more stable the CPU OC becomes as it reduces Cache Voltage and heat produced. There is a slight performance hit, but it is generally offset by the higher CPU Frequency and resulting OC.

I leave my Cache Voltage set to fixed or "Override" at 1.200 v.

Your settings and temps look very good! You may have room to go higher, at least 4.6 GHz.

I hope that this helps.

Yogi

 


Hey, Bobby -

What MB do you have?

Where/how did you set multi to 44?

Yogi

 
You must log in or register to reply here.

TRENDING THREADS

Latest posts

Moderators online

Share this page

COMPANY
RESOURCES
FOLLOW
Top Bottom