Info on X299 Dark overclocking with example build.
Please help with questions at end.
# indicates later post with more info. ReferKingpin Dark GuideIntel Skylake-X Data SheetIntel Skylake-X Spec UpdateMesh Network TheoryMesh Network Die Analysis Goal
Stable overclock for creative/scientific/deep-learning workstation. Status
4.5Ghz All 18 Cores Constant
3200 DDR4 16-18-18-36 Full Speed
Mesh Ratio 30
~82C @ Prime95 56K load
Confirmed Stable Non-AVX (AVX Testing Later)Evaluating candidate final stable configuration with case, Titan V, and 3600 16-18-18-36 memory overclock. #75Also AMD Radeon WX Pro 7100 in tandem with Titan V. #90 Build
X299 Dark On Included Bench Stand
EVGA Supernova 1200 P2 (Eco Mode ON)
7980XE (delid, 4.3Ghz bin)
EVGA CLC 280 (USB to USBHDR1/2, Block Pump Fan Cable To CHA_FAN, Radiator Fans Direct To CPU1_FAN And CPU2_FAN)
Corsair Dominator 3200 64GB CMD64GX4M4C3200C16
Samsung 960 Pro 1TB (Slot PM1)
EVGA 1080 TI Kingpin (Slot PE1; Tentative, Titan V Later)
Gigabit Ethernet To Intel i219 NIC
Thermal Grizzly Conductonaut Between IHS and CLC Waterblock #31-35 BIOS
1.06 (on BIOS2)
Vcore: Override 1.70
CPU Multiplier: 45x
AVX2 Negative Offset: -4 (Untested)
AVX3 Negative Offset: -6 (Untested)
Memory: XMP Profile 1 (DDR4-3200 16-18-18-36-1.35V)
VCCIO: 1.166 OS
Windows 10.0.16299.192 Driver
NVIDIA Driver 388.71
Default Windows NVM Driver Software
MemTest86 7.4 (USB Bootable)
EVGA Flow Control 126.96.36.199 (Firmware Version 188.8.131.52)
Prime95 29.4,build 5 #44
Iometer 1.1.0 (#18) Config
Nvidia Global 3D Settings Power Management Mode = Prefer maximum performance
Windows Power Plan = High Performance Note
Overnight Prime95 8-4096 FFT in-place 5 minutes per test pass (two times through all tests).
HWiNFO64 observes 14C+ delta between heavily loaded hottest/coldest cores.
HWiNFO64 confirms intended frequency drop when AVX enabled in Prime 95.
Disable AVX in Prime95 with these entries BEFORE [Worker #1] line in local.txt configuration file:
CPU clocks down to AVX2 offset, not AVX3 (AVX-512) offset when Prime95 running without AVX disabled.
Running cooler radiator fans on high load drops CPU temp 12C immediately.
Coolant temperature does not immediately respond.
EVGA Flow Control shows fluid temp TO radiator, not FROM radiator.
Activating fans may drop fluid temp FROM radiator to CPU, which coolant temperature sensor does not register.
BIOS provides better fan control than EVGA Flow Control. #30
EVGA Flow Control fan curve maximum too limiting for Skylake-X.
Wired CLC pump to CHA_FAN for pump power.
Wired CLC radiator fans to CPU_FAN1 and CPU_FAN2.
Running stock SMART profiles based on CPU temp in BIOS for radiator fans. Topic
Titan V Needs Companion Video Card - if compute matters #89
AMD WX Pro 7100 Works As Companion - handles displays while Titan V computes #90
X299 Dark LED Behavior Chart - what turns on when building #91
Choosing Good Ram - frequency/latency matters, charts provided #83
Tentative Benchmarks -
results close to final CPU & GPU overclock #60-61
Liquid Metal Application - enabled 45X CPU multiplier overclock thermals. #31-35
Phantom Throttling - detected when increasing Mesh Ratio to 32 from default 30 #50
WHEA CPU Internal Parity Error - indicated overclock instability at 45X CPU multiplier #57
BIOS Default Stock Testing - observation from Furmark crash troubleshooting #59
Dark BIOS 1.05 Issues - not supporting XMP and memory overclocks #74
Mesh Ratio Overclock Troublesome - better to focus on CPU and memory overclocks #75Titan V And Kingpin 1080 Ti Direct Comparison On Same Board SimultaneouslyDark Case Mounting Challenge
- VRM heatsink gets in way #4-8
Professional Workstation Benchmarking - using SPECwpc #76
Use Samsung NVMe Driver - Standard Windows NVMe driver terrible write speed #77
SSD Firmware Matters - slight performance differences in firmware for SSD #78Disabling Fast Startup
- optional, read to find out if you want to (link courtesy EVGA tech support)Extend/RAID M.2
- not tested (don't boot RAID, boot M.2 slot PM1, project data on RAID PCIe M.2 card if needed)
Intel Optane PCIe SSD has best 4K random read though - from this thread
#26, but thread is tedious.
Mod CLC 280 To Push/Pull - extra fans drop temps; improve sound. Alternative to custom loop. #82 Open Question
Hypothesis on fan activated CPU temp drop without coolant temp drop accurate?
What is difference between Intel i219 and i210 NIC?
How to test AVX-512?
Why 14C+ delta between heavily loaded cores?
Can anything fill RAM faster or test mesh ratio better than Prime95? #55 Closed Question
Why must EVGA Flow Control run for fans to follow curve? Shouldn't curve write to firmware on click Apply?
Why does HWiNFO64 hang on startup without SMBus disabled?
Why 23C delta between heavily loaded cores?
2018.02.03 - Updated 4.5Ghz overclock. Previous 4.3Ghz overclock info moved to #42.
post edited by geninfo - 2018/04/13 17:15:57