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== Haswell-E Overclock Leaderboard & Owners Club == - Page 416

post #4151 of 22018
I was trying as low as 10xxx on interval initialy which I think was the main bulk of my problems, too low for 3200. Stealing @jpmboy's 11440 seems to be going down a storm.

Just pushing 16-18-18-39 T1 at the moment at a nice clean 1.36v
post #4152 of 22018
A lower value for DRAM refresh interval is actually less aggressive. The value specifies the time within which all banks should be refreshed. A refresh restores charge to the DRAM cells, which drains away over time. If the stored charge for a logic high (1) falls below Vref, then it will be seen as a logic 0, which will result in data corruption. For that reason the DRAM cells needs refreshing periodically. So if we set a lower value, the DRAM cells will be recharged more often. The side-effect of more frequent refreshes is that no read/write transactions are possible during the refresh process. Temperature and voltage can affect the requirement for more frequent or less frequent refreshes. The default value is assigned by memory density.

-Raja
Edited by Raja@ASUS - 10/30/14 at 1:14am
post #4153 of 22018
Ah, well, I was getting corruption tongue.gif. The board set something like 12400 initially at 3200.


I did have to read that about 3 times, not gonna lie.
post #4154 of 22018
Quote:
Originally Posted by Jpmboy View Post

Quote:
Originally Posted by erase View Post

Awesome 2000+, can you break 2100?

lol - can you?

Likely not, but I would like to see someone else do it. There isn't much hope, all I can get is 1818 on this crappy air cooler, only just. I know there is bit more in this thing, can boot into windows no worries at 4.6GHz, haven't tried any higher. Air cooler rockets super high at 4.6GHz and crashes. If I could cool it down then maybe.

This is just 4.5GHz with cache also at 4.5 GHz and cheap RAM at 2666 MHz

post #4155 of 22018
4.5 uncore is nothing to be sniffed at. Especially if that's your daily clock. I need around 1.37v for 4.5
post #4156 of 22018
Raising the cache alone from stock to 4.5 GHz at the same core speed and RAM timing made a good difference in the score.

4.5 GHz and stock cache = 1742

4.5 GHz and 4.5 GHz cache = 1818

Did notice raising the cache voltage increases the temps

I called my local supplier as asked about a cheap water cooler to get started, the guy laughed when I figured that Nepton 280L would be ok. Told me to save my money and buy a better kit, not wanting to make a sale. He recommended this, would it be any good or pretty meh? http://www.ekwb.com/shop/ek-kit-l240.html I don't know anything I haven't bothered with water for about 6 years when I last one leaked and took out good part of my setup. Water cooler didn't last long before it started falling apart.
post #4157 of 22018
ok guys, finally I got my weird gflops performance drop with IBT sorted out so I thought I may share the knowledge, it appears that my gflops dropped because my overclock was ALMOST stable on my current voltage but not stable, I mean it was not unstable to the degree that it could freeze or give BSOD but simply the voltage was not enough so the cpu was starving and in turn gflops performance dropped, my voltage was set to 1.28 in the bios and it was reflecting 1.272 in cpuz and during stress vdroops to 1.25-1.26 range (I have LLC and cpu power phase on auto), so I raised the voltage to 1.29 in the bios so it reflects 1.287 in cpuz and vdroops to 1.272-1.282 and that gave me stability and ran IBT and linx like charm, my cpu went through 25 mins of linx biggest problem size and 10 runs on maximum in IBT and passed with flying colors with consistent performance, 320gflops in linx and 188 gflops in IBT and temps are still good (below 85C on the hottest core).

so now I will summarize my achieved overclock:

i7 5930k @ 4.4ghz vcore is set to 1.29 offset mode, reflects 1.287 under medium loads, reflects 1.272-1.282 under heavy loads like Linx and IBT and goes as little as 0.8x when the cpu is idle and the speed as 1200mhz as I have all C-states active and voltage on offset as I mentiond.

LLC, cpu power phase, overcurrent protection and all of my bios setting are on auto mode including ram which is running at the ddr4 JEDEC speed of 2133mhz and CAS15, while I have corsair lbx 2666 CAS16 rams and they where stable with their tested speeds of 2666mhz and CAS16 I have found that overclocking the ram is of no benefit for me as my PC is used mainly and only for gaming and my 1080p plasma TV only supports 60fps anyway, so yes overclocking the ram is gonna be useless in my case and will but some load on my cpu's memory controller with nothing to gain so I kept them stock. smile.gif

stability tests was as the following:
- 10 runs on maximum with IBT : Pass
- 25 mins on LinX on max problem size: Pass
- 8 hours of asus realbench with 16gb : Pass
- 12 hours of Aida64 including all tests expect gpu and storage : Pass
- Prime95 27.9 1 hour : Pass

absolute max temp came with linx and was below 85C on the hottest core. (corsair h110 push/pull)

all in all I rate my overclock as above average and my stability to be rock-solid.

as for my luck of the draw in the silicone lottery I think that while my cpu may not be the best but it is certainly above average and im very satisfied with my results, to have it stable at that core speed and vcore with offset voltage, no LLC and all C-states active is something don't you think thumb.gif

and NOW IM BACK TO GAMING wheee.gif

and last but not least im open to all of your opinions guys wink.gif
Edited by SsXxX - 10/30/14 at 2:10am
Fusion
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CPUMotherboardGraphicsRAM
5930k @ 4.4GHz v1.282 Rampage V Extreme Gigabyte GTX 1080TI Aorus Xtreme Corsair Dominator Platinum DDR4 2800MHz C16 v1.20 
Hard DriveHard DriveCoolingOS
Intel Solid-State Drive 750 Series 1.2TB Intel Solid-State Drive 750 Series 400GB Corsair H115i Windows 10 
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Samsung Plasma TV PS60F5000 60inch Cherry MX board 6.0 Corsair AX1500i Corsair Obsidian 650D 
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Fusion
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5930k @ 4.4GHz v1.282 Rampage V Extreme Gigabyte GTX 1080TI Aorus Xtreme Corsair Dominator Platinum DDR4 2800MHz C16 v1.20 
Hard DriveHard DriveCoolingOS
Intel Solid-State Drive 750 Series 1.2TB Intel Solid-State Drive 750 Series 400GB Corsair H115i Windows 10 
MonitorKeyboardPowerCase
Samsung Plasma TV PS60F5000 60inch Cherry MX board 6.0 Corsair AX1500i Corsair Obsidian 650D 
MouseMouse PadAudioAudio
Corsair M65 Pro Corsair MM400 Asus Strix RAID DLX Edifier S730 2.1 
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post #4158 of 22018
this is the best performing configuration I founded on my rig while remaining stable on LinX and Prime95 28.x.
I can do 4.4GHz too but I prefer to lower to 4.3GHz to get all the additional stability.



I noticed that 2666MHz @ 1.35V with 13-13-13-32-1T is the best performing setting I can get from my ram while remaining 100% stable.
I can get 3000MHz @ 15-17-17-35-2T but is slower than CAS13 on 2666MHz and requires more VCSSA to be stable and 125 strap.
I can get 3200MHz @ 16-18-18-36-2T but is not as much performance as 2666MHz with lower timings and it is not even stable.

next try will be 2666MHz @ 1.35V with 12-13-13-31-1T.
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Samsung 950 PRO NVMe M.2 512GB Samsung 850 EVO 1TB Western Digital Black 2TB Corsair Force GT 240GB 
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post #4159 of 22018
I thought X99 was pretty rubbish on the memory according to the reviews with the transition to DDR4, especially with write and latency. I exactly sure, but compared to reviews I have seen, my score doesn't seem to bad, this is what mine pulls even with the core clock down low at 3.6 GHz

post #4160 of 22018
Quote:
Originally Posted by sblantipodi View Post

this is the best performing configuration I founded on my rig while remaining stable on LinX and Prime95 28.x.
I can do 4.4GHz too but I prefer to lower to 4.3GHz to get all the additional stability.



I noticed that 2666MHz @ 1.35V with 13-13-13-32-1T is the best performing setting I can get from my ram while remaining 100% stable.
I can get 3000MHz @ 15-17-17-35-2T but is slower than CAS13 on 2666MHz and requires more VCSSA to be stable and 125 strap.
I can get 3200MHz @ 16-18-18-36-2T but is not as much performance as 2666MHz with lower timings and it is not even stable.

next try will be 2666MHz @ 1.35V with 12-13-13-31-1T.

oops I put the wrong tab in the CPUz on the screenshot, ok you got it, it was running @ 2666MHz, 13-13-13-32-1T
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Hard DriveHard DriveHard DriveHard Drive
Samsung 950 PRO NVMe M.2 512GB Samsung 850 EVO 1TB Western Digital Black 2TB Corsair Force GT 240GB 
Optical DriveCoolingOSMonitor
Plextor PX-B320SA Blu-ray Corsair H80i AIO Windows 10, CentOS 7 EIZO S2433W 24.1" 1920x1200 60Hz 
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Corsair AX860i Lian-li PC7FNWX Gigabit Internet Cyberpower Smart UPS PR1500ELCD 1500VA/1350W Si... 
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Hard DriveHard DriveHard DriveHard Drive
Samsung 950 PRO NVMe M.2 512GB Samsung 850 EVO 1TB Western Digital Black 2TB Corsair Force GT 240GB 
Optical DriveCoolingOSMonitor
Plextor PX-B320SA Blu-ray Corsair H80i AIO Windows 10, CentOS 7 EIZO S2433W 24.1" 1920x1200 60Hz 
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Corsair AX860i Lian-li PC7FNWX Gigabit Internet Cyberpower Smart UPS PR1500ELCD 1500VA/1350W Si... 
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