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6700K Overclock. Very dissappointing results.

post #1 of 4
Thread Starter 
A new build. Asus Z170-K motherboard. 16 Gig 3400 CL16 RAM KIt and going from an I7 860 which has been running @ 4.05 GHz for many years with 4 Gig of 1333 CL9 DDR3 slightly overclocked and running CL8 tight timings.

The good news. The 6700K goes to 4.6Hhz with no effort at all and I expect that I will get a little more out of it. The RAM is not happy at full speed but no doubt with a little more effort will get close. Also Windows 10 64 Bit Pro clearly has some caching going on when loading Office in particular as compared to Win XP 32 Bit Pro which the old machine was running. But to be honest the "Instant load of Excel" as compared to the previous "Almost Instant Load of Excel" is not really worth much in the real world.

The bad news. The actual performance increase was a measly 30%. So 4 generations later and supposed 8% to 10% improvement in IPC for each generation as well as in theory much faster ram for a very disappointing speed improvement. Old machine still running so able to bench time for time on a very RAM and Processor Intensive DB application.

So if you are anywhere in the range of I7 860 onward 6700K and Z170 is not worth the money.

HH
post #2 of 4
Yeah, I don't know what you're talking about, buddy.

According to Cinebench, A 6700K @ 4.6 GHz is roughly 57% faster than a 4.1 GHz 950 (Which is better than a 860) in the IPC department alone. That's ignoring all the new instruction sets that Skylake brings to the table as well as the massive improvement in features set that were non-existent back in the Nehalem days. Stuff like, USB 3/3.1, M.2, Native SATA 3, NVMe support, etc etc.
No Bottlenecks
(21 items)
 
 
File Server
(10 items)
 
CPUMotherboardGraphicsRAM
6700K @ 4.8 GHz 1.35V Gigabyte Z170X Gaming 7 MSI GTX 1080 TI Sea Hawk EK X @ 2.1 / 12 GHz 32GB G.SKILL Ripjaws 3350 MHz 15-14-14-34-2T 1.35V 
Hard DriveHard DriveHard DriveOptical Drive
Samsung 960 Pro 1TB WD Red 8TB NAS 10 * 6TB HGST Desktar NAS (RAID Z2) Go away 
CoolingCoolingCoolingCooling
EK-FB GA Z170X Monoblock EK/MSI Waterblock/Backplate 2 * Dazmode Darkside LP360 MCP355 DDC @ 7V 
CoolingOSMonitorKeyboard
9 * Corsair SP120 Quiet Edition @ 7V 8.1 Pro 12-bit ASUS ROG Swift PG279Q + LG 34UM58-P Corsair Vengeance K60 
PowerCaseMouseMouse Pad
SeaSonic SS-520FL2 - Fanless Fractal Design Define S Logitech G502 Proteus Core XTRAC PADS Ripper XXL 
Audio
Asus Xonar DSX 
CPUMotherboardGraphicsRAM
4770K @ 4.7 GHz 1.39V Maximus VI Gene MSI GTX 1070 Seahawk EK X @ 2.1/9.0 Ghz 16GB G.Skill Sniper 2600 MHz 11-14-14-14-2T 1.65V 
Hard DriveHard DriveOptical DriveCooling
Samsung 840 Pro 256GB Seagate Barracuda 8TB I will end you Dazmode Darkside Maple Leaf Special Edition 
CoolingCoolingCoolingCooling
EK GTX 1070 Seahawk Feser TFC Admiral 240 Black Ice GTX Xtreme M92 6 * Silverstone SST-FN121-P 
CoolingOSMonitorMonitor
2 * Noctua NF-B9 Redux 8 Pro 64-bit Samsung U28D590D 28" 4K Overlord Tempest X270OC 27" 1440P @ 72 Hz 
KeyboardPowerCaseMouse
Corsair Vengeance K60 EVGA SuperNova 750 G2 NZXT Vulcan (With Attached Handle) Logitech G500 
Mouse Pad
XTRAC PADS Ripper XXL 
CPUMotherboardRAMHard Drive
E5-2670 Supermicro X9SRA 64GB Samsung ECC 1333 MHz Mushkin Ventura Pro 32GB (Boot) 
Hard DriveOptical DriveCoolingOS
10 * 6TB HGST Deskstar NAS (RAID Z2) I will harm you Corsair H60 FreeNAS 9.10 
PowerCase
Corsair RM650 (Passive) Fractal Design Define R5 
  hide details  
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No Bottlenecks
(21 items)
 
 
File Server
(10 items)
 
CPUMotherboardGraphicsRAM
6700K @ 4.8 GHz 1.35V Gigabyte Z170X Gaming 7 MSI GTX 1080 TI Sea Hawk EK X @ 2.1 / 12 GHz 32GB G.SKILL Ripjaws 3350 MHz 15-14-14-34-2T 1.35V 
Hard DriveHard DriveHard DriveOptical Drive
Samsung 960 Pro 1TB WD Red 8TB NAS 10 * 6TB HGST Desktar NAS (RAID Z2) Go away 
CoolingCoolingCoolingCooling
EK-FB GA Z170X Monoblock EK/MSI Waterblock/Backplate 2 * Dazmode Darkside LP360 MCP355 DDC @ 7V 
CoolingOSMonitorKeyboard
9 * Corsair SP120 Quiet Edition @ 7V 8.1 Pro 12-bit ASUS ROG Swift PG279Q + LG 34UM58-P Corsair Vengeance K60 
PowerCaseMouseMouse Pad
SeaSonic SS-520FL2 - Fanless Fractal Design Define S Logitech G502 Proteus Core XTRAC PADS Ripper XXL 
Audio
Asus Xonar DSX 
CPUMotherboardGraphicsRAM
4770K @ 4.7 GHz 1.39V Maximus VI Gene MSI GTX 1070 Seahawk EK X @ 2.1/9.0 Ghz 16GB G.Skill Sniper 2600 MHz 11-14-14-14-2T 1.65V 
Hard DriveHard DriveOptical DriveCooling
Samsung 840 Pro 256GB Seagate Barracuda 8TB I will end you Dazmode Darkside Maple Leaf Special Edition 
CoolingCoolingCoolingCooling
EK GTX 1070 Seahawk Feser TFC Admiral 240 Black Ice GTX Xtreme M92 6 * Silverstone SST-FN121-P 
CoolingOSMonitorMonitor
2 * Noctua NF-B9 Redux 8 Pro 64-bit Samsung U28D590D 28" 4K Overlord Tempest X270OC 27" 1440P @ 72 Hz 
KeyboardPowerCaseMouse
Corsair Vengeance K60 EVGA SuperNova 750 G2 NZXT Vulcan (With Attached Handle) Logitech G500 
Mouse Pad
XTRAC PADS Ripper XXL 
CPUMotherboardRAMHard Drive
E5-2670 Supermicro X9SRA 64GB Samsung ECC 1333 MHz Mushkin Ventura Pro 32GB (Boot) 
Hard DriveOptical DriveCoolingOS
10 * 6TB HGST Deskstar NAS (RAID Z2) I will harm you Corsair H60 FreeNAS 9.10 
PowerCase
Corsair RM650 (Passive) Fractal Design Define R5 
  hide details  
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post #3 of 4
That is the sad state of current silicon technology... They have pretty much hit a brickwall now which is why we are seeing less and less improvement with each new generation.
But since you have a 860, I would think you would have gotten a bit better performance improvement than that.
post #4 of 4
Thread Starter 
I was hoping for about 50% improvement. Anyway, just waiting on one more bit of hardware at the moment so when the final build is completed I will rerun a more extended test - larger data set on 4 Different Machines and see how they go. I have a timer built into the code so can change a couple of lines and get it logged to a text file. The 4 machines I will check it on are:-

I7 6700K @ 4.6 GHz 16 Gig of CL16 Ram not currently running @ full 3,400 GHz
i7 860 @ 4.05 GHz 4 Gig of CL9 overclocked and CL8 timings..
I3 4170 @ stock with 8 Gig of CL11 Ram.
Xeon 5460 with 4 Gig DDR2 @ 3.8 GHz. This is a LGA 775 modified Board for LGA 771 and quite a nice little machine. Should be ~ 20% slower than the 860 I would expect but it does have the larger 12 Meg Cache.

This is not a synthetic. This is real world application which runs every single day and maybe that is part of the issue. Synthetics might be good at "Stress" testing but not so good at real world differences. The application is also not Multi-threaded and therefore unlike Cinebench is going to get nothing extra out of the extra threads and more recent instruction set improvements. But it is much closer to the real difference for most people upgrading I would suspect.

The other thing about this particular code is that once the first pass has happened it is not disk related - holds all the information in RAM so is slightly Output - Graphics Card a little bit - but no affected to any marked extent by Disk Drive subsystem etc. So the numbers will be whatever they are. So far as I said disappointing.
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