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post #2101 of 7221
Thank you djgar and Jpm.
Here's what I've found today.

1. Even though Prime95, X264 Stability Test V2, OCCT passed stress test... Asus RealBench H264 Encoding benchmark loop fails within the first 30-40 mins. (I'm surprised that RealBench can be more sensitive to memory stability compared to other stress test such as Prime95, OCCT, X264 stability test)

2. Tried different SA voltages.. didn't help.
3. Tried different VCCIN voltages, didn't seem to help.

So, I disabled XMP, and ran the memory in SPD (DDR4-2133) with stock SA voltage.. (Other settings left untouched. 4.4 core(1.350V), 3.8 cache(1.310V), LLC level5), 1.90 VCCIN.
And voila, RealBench H264 loop is running for 6 hours and counting. No errors, no BSOD.

So... It definitely is my Corsair Dominator Platinum DDR4-2400 10-12-12-28 kit making extremely difficult to stabilize my system.
http://www.corsair.com/en/dominator-platinum-series-32gb-4-x-8gb-ddr4-dram-2400mhz-c10-memory-kit-cmd32gx4m4b2400c10

How should I make these Corsair suckers stable?
Edited by PowerK - 7/30/16 at 6:28am
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Intel 6950X @ 4.4GHz ASUS Rampage V Edition 10 2x TITAN Xp (3840 CUDA cores) SLI G.Skill TridentZ 3200 14-14-14-34 1T 32GB 
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post #2102 of 7221
Check out the 24/7 memory stability thread. Also running GSAT on Linux Mint is highly recommended for testing memory stability as it takes it much less time to find errors. It's definitely worth the "trouble" of installing linux.(its pretty simple compared to overclocking biggrin.gif)
    
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post #2103 of 7221
Why is the cache overclock so crap with these chips?

Pointless anyone buying 3200Mhz memory when your cache is only 3.8Ghz.
Edited by combat fighter - 7/31/16 at 1:49am
post #2104 of 7221
Quote:
Originally Posted by combat fighter View Post

Why is the cache overclock so crap with these chips?

Pointless anyone buying 3200Mhz memory when your cache is only 3.8Ghz.

Noob question but how do you know what your cache should be relative to RAM?
post #2105 of 7221
Quote:
Originally Posted by TheBloodEagle View Post

Noob question but how do you know what your cache should be relative to RAM?
min cache frequency needs to be at least 50% of Dram Speed so just leave the min cache multi on Auto, after that the performance gains from a cache OC are pretty limited to specific ram IO intensive operations and benchmarks. "Core is (still) King". thumb.gif
Quote:
Originally Posted by combat fighter View Post

Why is the cache overclock so crap with these chips?

Pointless anyone buying 3200Mhz memory when your cache is only 3.8Ghz.

wrong.

Proof:
GSkill 3200c14 sticks, 64GB @ 3467c13

Edited by Jpmboy - 7/31/16 at 6:05pm
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post #2106 of 7221
I lowered uncore from 3.8 to 3.7GHz. And this made life a lot easier. Passed 8 hours of RealBench H.264 encoding benchmark loop.

After RealBench, I re-ran Prime95 custom blend, OCCT large data set as well as X264 Stability Test V2. All passed. :-D

I'm going to run HCI MemTest after work today. Fingers crossed.

I'd like to thank Jpm, djgar, vibraslap, vmanuelgm, nexxusty and Praz for your advice. thumb.gif
X99 System
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Z170 System
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CPUMotherboardGraphicsRAM
Intel 6950X @ 4.4GHz ASUS Rampage V Edition 10 2x TITAN Xp (3840 CUDA cores) SLI G.Skill TridentZ 3200 14-14-14-34 1T 32GB 
Hard DriveHard DriveCoolingOS
Intel 750 Series 1.2TB PCI-E NVMe 4x Intel 730 Series SSD 480GB RAID-0 EK custom loop + Mo-Ra 3 Windows 10 Pro x64 
MonitorKeyboardPowerCase
DELL S2716DG 144Hz G-Sync Corsair K65 RGB Rapidfire Corsair AX1500i Lian Li PC-O9 WX 
MouseMouse PadAudioOther
Logitech G303 Corsair Vengeance MM600 ASUS SupremeFX + harman kardon SoundSticks III ... Synology DS716+ NAS 12TB 
Other
1Gbps FTTH 
CPUMotherboardGraphicsRAM
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Hard DriveHard DriveCoolingOS
2x Intel 730 Series SSD 480GB RAID-0 Seagate 2TB Corsair Hydro Series H115i Windows 10 Pro x64 
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Realtek ALC1150 
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X99 System
(17 items)
 
Z170 System
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CPUMotherboardGraphicsRAM
Intel 6950X @ 4.4GHz ASUS Rampage V Edition 10 2x TITAN Xp (3840 CUDA cores) SLI G.Skill TridentZ 3200 14-14-14-34 1T 32GB 
Hard DriveHard DriveCoolingOS
Intel 750 Series 1.2TB PCI-E NVMe 4x Intel 730 Series SSD 480GB RAID-0 EK custom loop + Mo-Ra 3 Windows 10 Pro x64 
MonitorKeyboardPowerCase
DELL S2716DG 144Hz G-Sync Corsair K65 RGB Rapidfire Corsair AX1500i Lian Li PC-O9 WX 
MouseMouse PadAudioOther
Logitech G303 Corsair Vengeance MM600 ASUS SupremeFX + harman kardon SoundSticks III ... Synology DS716+ NAS 12TB 
Other
1Gbps FTTH 
CPUMotherboardGraphicsRAM
Intel 6700K @ 4.7GHz ASUS Sabertooth Z170 S ASUS Strix GTX1080OC SLI 16GB DDR4 Corsair Dominator Platinum 
Hard DriveHard DriveCoolingOS
2x Intel 730 Series SSD 480GB RAID-0 Seagate 2TB Corsair Hydro Series H115i Windows 10 Pro x64 
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post #2107 of 7221
Quote:
Originally Posted by PowerK View Post

I lowered uncore from 3.8 to 3.7GHz. And this made life a lot easier. Passed 8 hours of RealBench H.264 encoding benchmark loop.

After RealBench, I re-ran Prime95 custom blend, OCCT large data set as well as X264 Stability Test V2. All passed. :-D

I'm going to run HCI MemTest after work today. Fingers crossed.

I'd like to thank Jpm, djgar, vibraslap, vmanuelgm, nexxusty and Praz for your advice. thumb.gif

Hello

Good to hear and you're welcome. smile.gif
post #2108 of 7221
Quote:
Originally Posted by PowerK View Post

I lowered uncore from 3.8 to 3.7GHz. And this made life a lot easier. Passed 8 hours of RealBench H.264 encoding benchmark loop.

After RealBench, I re-ran Prime95 custom blend, OCCT large data set as well as X264 Stability Test V2. All passed. :-D

I'm going to run HCI MemTest after work today. Fingers crossed.

I'd like to thank Jpm, djgar, vibraslap, vmanuelgm, nexxusty and Praz for your advice. thumb.gif

I'm nowhere as useful as the others, but occasionally have my moments - happy to contribute! thumb.gif
post #2109 of 7221
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post #2110 of 7221
Quote:
Originally Posted by TheBloodEagle View Post

Noob question but how do you know what your cache should be relative to RAM?

faster cache gets you better latency on your ram also allows you the liberty of not having to access the ram as often (if the cache is fast enough)

but that person is incorrect simply due to the fact that there is 5MB MORE cache with this chip, so 3.7-3.8GHz is still pretty fast even vs. a 5960X at 4.3-4.4 GHz cache.

you can run intel's MLC tool to compare speeds with diff cpus and specific cache speeds, and you will notice the difference in the idle latency as well as the loaded latencies.
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