Intel Haswell Overclocking Clubhouse.

[EarthDog]

What does CPUz have to do with the 'weirdness in bios'? CPUz is a windows program...

Clearly, 10000 is not real.

 

[freeboy]

Clearly,
Ok
The cause is bios

I was hoping someone could tell me what CPU z reads

 

[EarthDog]

What are you asking? How can one read a windows program from the bios to compare?

Please be clear on what you are trying to ask please.

 

[freeboy]

ok..
lets try one more time

try to not be too deep here

in the windows invironment... Im not talking about reading cpu z


what does cpu ACTUALLY READ?

 

[Kursah]

The CPU speed? Or what does the CPU read? Well it reads 1's and 0's, and that's it, billions a second.

If you're talking about reported CPU core speed, it's all dependent on what the EFI or BIOS is reporting to the OS for hardware speeds from my understandings. Make sure you're using the newest version of CPU-z...which looks at the drivers that windows uses to read CPU speed. Many other programs use those same drivers or MB specific drivers. Windows will only read what information it's provided, so a motherboard needs to report either to what MS usually reads or what a driver for that MB chipset provides, be it AMD, Intel, IBM, etc. Another thing to note, is the wrong version of software can cause unreliable readings unless verified in updates that it supports that chipset along with processor and revisions of that processor.

That's the gist of my understanding of it.

 

[freeboy]

there is a program called cpu-z
it reads from the hardware.. reports in the software .. Im asking where it reads the reading . unless it reads from another software which makes it redundant

 

[HammerON]

Ask stasio:
http://www.techpowerup.com/forums/showthread.php?t=114644&page=8

 

[EarthDog]

It reads registers off of some chips on the board I beleive. For example, motherboards have the nuvoton if super I/o chip that covers some temps and voltages. I do not know exactly where it reads cpu speeds.

 

[DTH]

i5-4670k Batch # L313B428
Stable @ 5Ghz - 1.29 Core Voltage
XSPC Raystorm RS750 kit
Asus Z87-Pro
16Gb Corsair Vengeance 1600mHz

[url]http://i168.photobucket.com/albums/u171/faith777_DTH/NewBitmapImage3_zpsf1ff4ecb.png[/URL]

[url]http://i168.photobucket.com/albums/u171/faith777_DTH/30MinsBF3Ultra_zps82de7fbf.png[/URL]

[url]http://i168.photobucket.com/albums/u171/faith777_DTH/IBTDTH_zps3d382277.jpg[/URL]

Went up to 5.1 but not stable and I need to better place my radiator before applying more voltage...

[url]http://i168.photobucket.com/albums/u171/faith777_DTH/NewBitmapImage2_zps61988cb0.png[/URL]

 

[EarthDog]

5 GHz 1.29v is beast... wow...

 

[dom99]

I've got an i5 4670k clocked to 4.4ghz with 1.240V on the CPU and it's stable in games and intel burn test consistantly. The temperature reaches 80 degrees in IBT on the hottest core, is this acceptable for a 24-7 clock speed?

The processor is constantly at 4.4ghz and that voltage now, in the interest of saving energy, how do I set itso that the CPU scales back when not required?

My specs are up to date

Thanks

 

[DTH]

5 GHz 1.29v is beast... wow...

Thanks, I was lucky so I thought I would share the batch number.

I'm in the process of building a custom cooling loop so will be testing a higher clock with more VCore soon.

 

[TheHunter]

I saw one or two 4770K OC at 5Ghz @1.25v (xtremesystems.org), wish I had such a gem

Im at 4.7Ghz @ 1.284v for 24/7, still not bad imo.

Please read my post, a fresh voice from new a new soul in realm of overclocking.

First of all i'd like to greet people of this forum, hello people. On september sixteenth i got my new setup, basically a ga-z87m-d3h motherboard with K-i5, with 1600mhz ram. After some time playing with it i was pretty impressed with perfomance and silence of my new system in a gorgeous n200 case. Since i bought a kinda bigger cooler with an oem cpu for saving and overall completenes of the system, i am now able to overclock the cpu a bit. BTW i have a top-down cooler master pwm 92mm fan, with kinda bigger heat spreaders than the ones on the stock one, with a fan which can go up to 4200rpm. I was not disappointed with it's perfomance though, temperatures remain well below 50c on 4,2 Ghz.

This is my first ever overclock expirience in which i was able to achieve a 4,2 mark through modifying TB multipliers, and leaving vcore at auto setting. I read a lot about hardware i am now having time with so i decided to leave voltages alone (i mean new voltage managment introduced on haswell platform). Testing using different software from cpu-z to aida64 to prime95 shows that system is very stable and perfoming good, giving me up to 15k on geekbench. Voltage never goes higher than 1,15-16 mark on most exhausting tests, which i consider totally safe. One detail, i do not use prime95 for general testing since it does override whatever vcore numer you set.

Now to the purpose of this post. I was not able to go past 4,2Ghz, can't get my system to boot. Why? i could put vcore up, but it does not provide the desirable effect, it gets higher in the os even if was manually set to below average setting i expirience with auto.
Since my cpu is capable of running at 4,2 with voltages not much higher than stock ones, and below the golden 1.2 (or 1.212) marks i do think my system is capable of running at 4,4Ghz. What do i do wrong, and why i experience such a wall, mentioned by someone on some page before, which i saw when first got here from google about 20 minutes ago.

Thank you. and i'm planning for a hackintosh, but it is a different story)

Hi,

Well it depends, I would start with manual voltage an raise it in 0.05v steeps. Your 4.2Ghz@ 1.16v is a bit on the higher side for a 4670k.

For example my 4770k OC
4.4Ghz @ 1.152v
4.5Ghz @ 1.183v
4.6Ghz @ 1.232v
4.7Ghz @ 1.284v

Imo you would need ~ 1.21-1.23v for 4.4-4.5Ghz. First test with fixed voltage, when you find stability, change to adaptive or offset voltage.

But from what I saw Gigabyte doesn't have adaptive voltage, only offset, im not 100% sure though.

A couple of good stability benchmarks/games, other then over the top IBT, Prime95 or Linx.
- x264 benchmark (if it crashes with x264.exe stopped responding you're almost at right voltage)

- Battlefiled3 (bigger maps)
- Resident Evil5 dx9 variable benchmark (use 720p to stress cpu to the max)
- FFXIV benchmark, and the new one Reborn
- any latest SquareEnix game; Hitman Absolution, TombRaider2013, Sleeping Dogs
- Any latest codemasters game

Funny thing was, I passed IBT, LInx, Prime95, Aida64, but failed in 64player Bf3 match after 15-30min or so.. I decided to test around BF3 and other games to find my final voltages.

Also a very good OC guide by Cadaveca
http://www.techpowerup.com/reviews/Intel/Haswell_OC_Guide/

 

[tomlev5]

How is it crashing?


10 dead Haswells so far, boys. I'm ready to write up the OC guide! If it passes W1zz's approval, it'll be on the front page soon, working on it today, gotta capture some screenshots and need to make some phone calls to confirm some info, first, and some reps aren't in office yet, it's still early A.M. hours in Cali.

Dave, you got a lot of experience with pushing Haswells to the max. Can you please share one info regarding safe/unsafe overclock. Did all the chips die because of the high input voltage or are there other ways to kill a chip?

I have a 4670K on Z87-A with settings:
Core Multiplier: 45
Core voltage: 1.340 (HWiNFO64 or HWMonitor shows CPU Vcore 1.360)
Input voltage: Auto (Z87-A sets VCCIN to 1.808, sometimes to 1.824 or 1.840)
Uncore Multiplier: 43
Uncore Voltage: 1.260
Cooling Solution: Noctua U14S
Ram Speed: 2133 CL10 @ 1.65 V

I can stress test on XTU, AIDA64 (the temperatures remain below 80C, and the sistem is completely stable - 0 bsods in around 48 hours of stress testing), but the temperatures go immediately to 100C if I use prime95 v28.1. The system is stable if I run prime on two cores only (temps below 90C).

1) Will I kill the chip if I stress test for days on 100C in prime v28.1?
2) If I will not kill it, is there a strong possibility that the chip will degrade?

P.S. Dave, thanks for the guide!

 

[freeboy]

Great ?
Heat or ?

 

[cadaveca]

1) Will I kill the chip if I stress test for days on 100C in prime v28.1?
2) If I will not kill it, is there a strong possibility that the chip will degrade?

1) temps don't kill, voltage does. Input voltage and CPU voltage can be dangerous, for sure.


2) degradation is always possible, for sure, which is why I tend to recommend staying within the limits Intel recommended, @ stock + 10%.

 

[tomlev5]

1) temps don't kill, voltage does. Input voltage and CPU voltage can be dangerous, for sure.


2) degradation is always possible, for sure, which is why I tend to recommend staying within the limits Intel recommended, @ stock + 10%.

Thanks Dave. It looks like I will have to buy Intel's Performance Tuning Protection Plan if I want to test at 100°C ...

 

[vega22]

Dave, what was the most voltages you gave to chip's which didn't die, and what was the least you gave to the one's which did?

 

[Nordic]

I just got myself a 4770k and a asus rog impact. The cpu stock volts are 1.04v. Judging by cadavaca's guide and the chart on page 1, that is pretty decent right? I would have tried to overclock it today but I am fighting to even get to the bios most of the time.

 

[Kursah]

Have you purchased the Intel Performance Tuning Plan yet? If not, please go do so. What do you mean fighting to even get to BIOS because it boots so fast?

 

[Nordic]

Thanks kursah. I am going to. I am fighting the bios meaning it does not want to post. Some sort of ram issue. If I leave it off for awhile I can boot right in.

Memory is the Gskill f3-2400C10D-8GTX

I will have more time tomorrow night to mess with it. Tonight I sleep.

 

[Kursah]

Well does that board have a MemNOW! button or whatever they are called? I know my Asus z87pro does so I would assume the RoG series has one as well. I have 2133 g.skill sniper 2x4gb that's been pretty decent so far... but if your ram needs higher voltage...make sure you set that independently first. Also try without using XMP profiles and manually setting timings and voltage. That has helped many in their adventures...also you may need to reduce the speed of your memory to 1600 cl9 1.5-1.6v for now just to get everything else stable...especially when overclocking.

Rest tonight and dominate tomorrow! Good luck!

 

[Vario]

Thanks kursah. I am going to. I am fighting the bios meaning it does not want to post. Some sort of ram issue. If I leave it off for awhile I can boot right in.

Memory is the Gskill f3-2400C10D-8GTX

I will have more time tomorrow night to mess with it. Tonight I sleep.

Hope you get it working. Do you have any other memory to test? Can you try reducing your ram speed to 1600 9-9-24 1t 1.5v until you find your processor's sweet spot?

 

[Vario]

Have you purchased the Intel Performance Tuning Plan yet? If not, please go do so. What do you mean fighting to even get to BIOS because it boots so fast?

Why do you recommend the performance tuning plan? Is it worth it? Can Intel tell if you are outside spec'd parameter?

 

[cadaveca]

Dave, what was the most voltages you gave to chip's which didn't die, and what was the least you gave to the one's which did?

2.05V on Input and 1.5V vCore killed chips, for the least.

Ran 1.8V vCore, chip is fine, and 2.4V V-Input.

Why do you recommend the performance tuning plan? Is it worth it? Can Intel tell if you are outside spec'd parameter?

Kursah had a bunk OC chip, used the tuning plan to get a better one. Tuning plan is good to RMA working but poor clocking chips for normal users, and is great safety insurance for those that run LN2. We are talking about just $25 per chip, which is worth paying to have someone pack up a new chip and mail it my way, IMHO.