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5820k degradation at 1.285 volts - Page 3

post #21 of 65

you need to adjust LLC options in the "digital power options" page

 

**as well SVID comm should ALWAYS be disabled once you OC and apply higher voltages

post #22 of 65
Thread Starter 
My power supply is a cooler master M2 1000W
Failed at 4.2 ghz
RealBench said instability detected, no bsod,
LLC is a 100%
VCCIN is at 2.000 volts
Vcore at 1.300 volts

i have
r9 290 crossfire at 1040 mhz/1250 mhz.


thx Scorpion49 i will try your setting when my 1.25 volts 4.4 ghz will fail
post #23 of 65
Quote:
Originally Posted by CL3P20 View Post

*** for +4ghz OC.. make sure your power options for LLC are set High/Extreme, both for CPUv and VCCIN or you will encounter a lot of those errors. For me.. once enabled I could actually lower vcore by quite a bit. (from 1.32v for 1.24v and remain stable at the same OC.

I have seen the LLC option in the BIOS for the RVE, Do you think that would help like you have described?

I have tried 4.3Ghz (5930K) with 1.155V (Crashed and felt that should have been significant, although I have a ton of room to go ( 1.3V)

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CPUMotherboardGraphicsGraphics
I7 5930K @ 4.5Ghz Asus Rampage V  GTX 980  GTX 980 
RAMRAMHard DriveHard Drive
Corsair Dominator Platinum 2666mhz DDR4 4 Gb Q... Dominator Light Bar Kits x 2 Crucial 240 SSD  Seagate 7200 Rpm Baracuda 
Hard DriveHard DriveHard DriveCooling
Seagate 7200 Rpm Baracuda Crucial M500 512 SSD Crucial M500 480 SSD EK 480mm Coolstream XTX x 2 
CoolingCoolingCoolingCooling
Tons of Fittings Supremacy Evo Copper EK  XSPC 240mm Radiator V3 x 2 Swiftech MCP35X PMW Pump DDC x 2 
CoolingCoolingCoolingCooling
EK Rampage V Mosfet WaterBlock Original CSQ NB Eloops B12 - 2 1300rpm  Phobia 8way 4pin Fan Controller x 2 Ek Single Link CSQ Bridge x 2 
CoolingCoolingCoolingCooling
Bitspower Z Tank (Clear) 250mm x 2 980 WaterBlocks x 2 Ek DDC Pump Top (Acrylic) x 2 Primochill 3/8" x 1/2" OD Clear Tubing 
CoolingCoolingOSMonitor
Bitspower 12mm Acyrlic Tubing 19" x 4  XSPC 3/8" x 1/2" Compression Fittings x 12 Windows 7 Professional 64 Bit Crossover 324K 
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Crucial 512 SSD EK Supremacy EVO White Bitspower 150ml Reservoir POM White x 2 Swiftech 18w DDC x 2 
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Bitspower 980ti HOF Waterblock (Clear)  EK SE 240mm Slim Radiator EK XE 240mm Radiator x 2 EK DDC Plexi top x 2  
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post #24 of 65
Quote:
Originally Posted by cou51 View Post

My power supply is a cooler master M2 1000W
Failed at 4.2 ghz
RealBench said instability detected, no bsod,
LLC is a 100%
VCCIN is at 2.000 volts
Vcore at 1.300 volts

i have
r9 290 crossfire at 1040 mhz/1250 mhz.


thx Scorpion49 i will try your setting when my 1.25 volts 4.4 ghz will fail

So is realbench crashing but windows stays on?

What portion of Realbench are you getting the error message on? If windows is crashing, what is the windows error code?

I have a sneaking suspicion that your instability is from something else in the system. Again. Set your BIOS to default, set your video to default clocks, see if you can pass realbench that way, basically turn off ALL over clocks, every single thing that you've touched, put back to factory settings. You've already proved that your CPU is stable at 4.4 @ 1.3. Prime ONLY tests the CPU, Realbench tests the entire system if you have all the options selected. Especially memory.
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post #25 of 65
Thread Starter 
1.25 volts 4.4 ghz 1.25 volts 90 minutes before crashing, this time blue screen, pretty sure i am realbench stable at 1.26-1.27 volts

i think the cause of the instability is my screen saver. Each time my screen close, (du to not using my computer) realbench faild. Even stock.

if i use the computer at the same time real bench is running, it will not crash,

prime 95 need 1.3 to be stable,
post #26 of 65
Quote:
Originally Posted by cou51 View Post

1.25 volts 4.4 ghz 1.25 volts 90 minutes before crashing, this time blue screen, pretty sure i am realbench stable at 1.26-1.27 volts

i think the cause of the instability is my screen saver. Each time my screen close, (du to not using my computer) realbench faild. Even stock.

if i use the computer at the same time real bench is running, it will not crash,

prime 95 need 1.3 to be stable,

You realize realbench stresses the GPU as well unless you de-select that option as well right?
post #27 of 65
Thread Starter 
no i didn't realise that, why using the gpu for a cpu test.


but event if realbench need less vcore than prime 95, this 5820k really suck. i think i'm missing someting,
post #28 of 65
You're passing real bench at 1.25 volts correct? When you turn your screen saver off? Even if you had to bump to 1.26, that's still a pretty good chip.
I think what you're missing is realistic expectations and research. You aren't reading about the tests you are performing, you are just clicking "GO" and expecting amazing results. You didn't bother to read what realbench is, it is a SYSTEM test, not just a CPU test, hence the reason I keep telling you to turn off all other overclocks, set BIOS and GPU back to defaults, then work on your CPU OC from there. Make sure all screen savers, power savers, or anything that says saver, is turned off while stress testing.

You have a pretty good chip. Did you win the silicone lottery? Nope, but very few do, that's why it's called the lottery..... But the CPU doesn't suck, 4.4 at anything under 1.3 is decent.
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post #29 of 65
Quote:
Originally Posted by cou51 View Post

no i didn't realise that, why using the gpu for a cpu test.

but event if realbench need less vcore than prime 95, this 5820k really suck. i think i'm missing someting,

My settings (and I have an average 5820k):

CPU Frequency: 4300MHz (using a ratio of 43, and 100MHz strap, BCLK)
CPU Vcore: 1.312V (1.35V is the absolute highest you should go with this, 1.300V is safe)
Cache Frequency: 4200MHz (I'm using an ASUS mobo, you probably won't reach this high, beyond 4300MHz core, this will have to go down)
Cache Voltage: 1.250V (max "safe" voltage, you need more when you overclock the core frequency)
RAM Voltage: 1.25V (put yours to 1.25V too, or even 1.3V to eliminate RAM instability)
VCCSA: 1.008V (this is dependent on your RAM, I'm running ultra low timings and 2666MHz with all 8 slots filled with this voltage)

My suggestion is to set your cache overclock to 3300MHz, set the cache voltage to 1.20V, set your RAM voltages to 1.25V (or 1.3V), go down to 2400MHz RAM speed. Set your VCCSA to 1.000V. Now it is time to test your CPU frequency. Start with 1.3V of Vcore and set your CPU frequency to 4400MHz. Test this with ASUS RoG Realbench stress test for 30 minutes. If you go higher than 80'C, then I would reduce Vcore to 1.25V. You could also do a 2 pass encode in handbrake using h.265, on a 2 hour 1080p film, and if handbrake crashes during that time - your overclock is unstable.
Edited by Desolutional - 5/21/15 at 11:58am
post #30 of 65
Thread Starter 
with 1.3 vcore, 1.20 cache voltage and ram at 1.25 and vccsa at 1.000 volts, my cpu was stable for 30 minute of prime 95 large FTT and handbrake at 4.4 ghz (87 degree max with prime 95)

with 4.5 ghz and with the same setting my cpu didn't even put up a fight and it crashed after 3 minute of prime95.


my ram is only at 2133 mhz, i have some crappy crucial ddr4 2133 15-15-15-36 16 go, they can't even do 2400 mhz even with 1.3 volts

i think 4.4 ghz is the best my cpu can do,


to lmarklar
my 5820k is not realbench stable at 1.25 but almost, i didn't test 1.26 volts.When my cpu can do 90 minutes before crashing , i usualy need 0.01 or 0.02 volts to reach stability.
but i still need 1.3 volts for prime95 frown.gif


almost all haswell can do 4.5 ghz with less than 1.2 vcore (Devil canyon thread)
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