Stabalising an OCd i7-4770K

OCInside said:
Yeah that's the ram I've got.

Is there any need to increase the RAM voltage above what XMP set it to?

Yeah there seems to be a big Vcore jump required for a stable 4.6 so I'm just concentrating on getting the Vcore for 4.5 as low as possible. Down to 1.285 just now.
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Theres a lot of cotradictory iffy stuff going on here!!! Some good info some lacks basis.

On your cooling 1.325 is about the max. 1.3 for 4.5 is fine you don't need to keep trying to dial down. It makes no odds.

Stress tests for 12 hours so pointless and far more damaging than high core volts using normal everyday progs. Your CPU is stable!!! Quit with the junk!!

Cache Volts max is 1.325 on air/water and you can gain a nice benefit from getting cache to as close to core as possible especially in progs that require bandwidth.

Memory use XMP 1.65v done. Unless you want to tune for perf. But less than 1.65v is pointless.

SA,IOA and IOD for your OC 1.1-1.15 is fine. With that mem speed no more is needed.

LLC level 5 is fine no need for more. Some droop is buiilt into intel spec and even for XOC I use no more.

For me to get better perf you now need to tune ram and push uncore.
 
Not causing any conflicts here, but it's known fact that voltage creates heat, sole cure, if you don't need it, don't use it, these things run hot enough as it is so I would completely recommend not using unrequired voltage, if anything is going to kill components, then its voltage.

I wasn't to sure about his ram as I never trully found out what the rated voltage was for that.

And in the begining I've had overclocked systems which have been untested and unstable, I'm not talking blue screens here, I'm talking have to reformat windows every 6 months due to read and write errors, Intel recommend using AIDA64 stress test, they also have there own IBT and have a stress test built into there Intel extreme tuning utility, I recon too much voltage unrequired is way worse than a few hours stress testing for stability.

I suggest you take a look at this in depth overclocking guide, created by a Gigabyte engineer, this is what taught me how to overclock haswell properly:
http://www.overclock.net/t/1401976/the-gigabyte-z87-haswell-overclocking-oc-guide
 
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aida64 is a waste of time, you can pass it all day and still crash like mad in many other programs. Only very few haswells i have seen pass prime 95, so now intel tells you not to use it but all prime 95 stable ones have proven to be stable in the programs I use. Intel burn test kills haswell cpu's if there is any issues with the overclock. Testing with games will just leave you with data corruption and crashes.

Some games like metro, crysis 3 and payday 2 crash on a system that has an overclock that is not stable but passes adia64 with ease. Also unstable overclocks appear to degrade fast when the cpu is stressed. Was upgrading to haswell from a very high overclocked i5 2500k so need a 4.4Ghz of higher in haswell for better performance or it is pointless. Really regret giving my old cpu away.
 
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zx128k said:
aida64 is a waste of time, you can pass it all day and still crash like mad in many other programs. Only very few haswells i have seen pass prime 95, so now intel tells you not to use it but all prime 95 stable ones have proven to be stable in the programs I use. Intel burn test kills haswell cpu's if there is any issues with the overclock. Testing with games will just leave you with data corruption and crashes.

Some games like metro, crysis 3 and payday 2 crash on a system that has an overclock that is not stable but passes adia64 with ease. Also unstable overclocks appear to degrade fast when the cpu is stressed. Was upgrading to haswell from a very high overclocked i5 2500k so need a 4.4Ghz of higher in haswell for better performance or it is pointless. Really regret giving my old cpu away.
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I totally feel your pain, regarding getting rid of your old CPU, I had an I7 920 that was doing 4.3ghz on a G1 Sniper x58 board, I paid £350 for the board and £250 for the CPU, I got £175 for the board and £35 for the CPU, totally regret selling them, im now left with a haswell which although does 4.6ghz, shows no real performance gains in everyday use over my 920 doing 4.3ghz.
 
8 Pack said:
For me to get better perf you now need to tune ram and push uncore.
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Firstly thanks for your reply and sorry for the delay in mine!

My current settings are as follows: -

BIOS Settings

Ai Overclock Tuner [XMP]
CPU Core Ratio [Sync All Cores - 44]
Min. CPU Cache Ratio [42]
Max. CPU Cache Ratio [42]
Internal PLL Overvoltage [Enabled]
DRAM Frequency [DDR3-2133MHz]
CPU Core Voltage [Manual - 1.300v]
CPU Cache Voltage [Manual - 1.300v]
SVID Control [Disabled]
CPU Input Voltage [1.900v]
DRAM Voltage [1.6000]
CPU Spread Spectrum [Disabled]
DRAM CAS# Latency [9]
DRAM RAS# to CAS' Delay [10]
DRAM RAS# PRE Time [9]
DRAM RAS# ACT Time [27]
DRAM Command Rate [2]
CPU Load-line Calibration [Level 5 (out of 8)]
CPU Voltage Frequency [Manual - 500KHz]
CPU Current Capability [140%]
CPU C States [Disabled]
Primary Display [PCIE]

Core Temp 1.0 RC6

Idle temps with H100i in auto = 29-31C across all cores.
RealBench 2.1 Benchmark with H100i in auto = 68-75C across all cores.

Questions

1) The system seems stable, do these settings look ok?

2) For tuning the RAM, I just set the frequency to 2133Mhz and the voltage to 1.600v. The rest is at XMP settings. Is there anything else I should do?

3) Have I missed anything?

*Updated* - 22:30
 
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