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Gaming benchmarks: Core i7 6700k hyperthreading test (2018 update with GTX 1080 Ti)

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System Name Artas1984
Processor Intel Core i7 4770K
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Software Windows 7 Pro 64 BIT
Benchmark Scores i've got a shitload of them
#1
Back in January 2016 i made a test about Intel Core i7 6700K virtual cores performance numbers in gaming. Short story back then was that hyperthreading offered no FPS improvement in any of my tested 21 games. Not only that, but about half of the tested games showed slight performance decrements with HT on.:

https://www.techpowerup.com/forums/...rks-core-i7-6700k-hyperthreading-test.219417/

Things have changed a lot since then:

1. 17 new games have been added, way more modern in terms of performance demands, and only the most demanding 3 games back from the previous test will be retested per new.
2. GTX 1080 Ti will replace GTX 780 Ti to ensure no bottleneck on part of GPU will happen.
3. Seeing as Core i5 8400 beats Core i7 6700K in every modern game i have seen all over the internet benchmarks, i have to wonder is this not only because of the additional two cores of Core i5, but also due to the fact that virtual cores of Core i7 might actually hamper the performance in some games? Because we know that was the case in previous tests.

What i actually expect now is to see some performance gains from Core i7 hyperthreading just like from Core i3 hyperthreading (which was noted a millennia ago). It is now 10 years since Core i7 {4 cores/ 8 threads} processors have their name etched, but only recently compared to the whole 10 year perdiod we finally got our ''4+4'' HT supportive games like Ashes of Singularity, so let's see how further an overclocked GTX 1080 Ti can push CPU HT..

TEST SETUP

Intel Core i7 6700K 4.5 GHz
Asus Maximus 8 Ranger
Kingston Hyperx Fury 2X8 GB DDR4 2666 MHz C14
Reference GeForce GTX 1080 Ti OC {maximum boost clock 1974 MHz}

Windows 7 Pro 64 bit
NVIDIA 411.70


---------------------------------------------------------------------------------------------------------------------------

ASHES OF SINGULARITY



Starting with a fact that is world wide known by now, HT does increase performance. This is the only game in my list where CPU utilization is higher than GPU - 99 % vs. ''only'' 70 %... In non of the later games will CPU utilization reach over 50 %, while GPU will vary a lot with most times maxed out.

BATTLEFIELD 1



Reduce image quality, play in multi player, and you will likely see even more HT gains. Testing many times in a row, it is fair to say, that the evidence of HT performance gains is unquestionable.

CALL of DUTY WW2



Testing many times in row i must state that HT hurts performance very notably. WTF - in one of the latest and most demanding games of the franchise this is unacceptable!

COMPANY OF HEROES 2



Retesting a very demanding RTS confirms what was observed in my previous 2016 benchmark - HT hurts performance slightly. This is no margin of error, the benchmark results are very constant. With AA disabled the difference is even greater. CoH 2 built in benchmark is the most stable i have ever tested in any game - with variables lower than 1 % in each successive test.

CRYSIS 3



Retesting the benchmark god game again confirms the results of the 2016 test - constant performance drops with HT on. GTX 780 Ti was way too weak to handle Crysis 3 over 60 FPS minimum at max settings anyway. Having double checked the ''old'' games, let's move to more modern titles.

DEUS EX MANKIND DIVIDED



Core i7 4/4, having done many tests in a row, never reached the top results like Core i7 4/8 did, so i have to assume HT does increase performance here.

DIRT 4



The results are within the margin of error.

DOOM



To confirm the abysmall performance of HT, i've done tests in several other levels, but with the same shocking outcome. HT is horrible in Doom.

F1 2017



HT increases performance for sure. The F1 game built in benchmark is quite stable and repetitive anyway.

FAR CRY 5



Because the max FPS are the same, i can not confirm that HT hurts performance here, but it definitely does not help. The built in benchark of Far Cry 5 seems to be very constant with results.

GHOST RECON WILDLANDS



Together with the built in benchmark i also tested the single player launch checkpoint as well as made tests on lowest preset possible to confirm that there is absolutely no performance gain with HT on.

MASS EFFECT ANDROMEDA



To think how GTX 1080 Ti performance might be hampered just due to the HT factor is sad. Second worse case after Doom.

PREY



Great minimal FPS gain with HT on, but you would not notice any difference unless you tweak the cfg, as the game runs at 144 FPS. I had to unlock 300 FPS to see the difference.

PROJECT CARS 2



No difference.

RISE OF TOMB RAIDER



The results are within the margin of error. Equal performance i'd say.

SNIPER ELITE 4



When you have got that many FPS, it does not matter, but HT does the job it was foretold to do in ages past.

TOTAL WAR WARHAMMER 2



Yet another very stable and constant build in benchmark shows clear HT performance gains. Enabling 4X AA would actually bottleneck GTX 1080 Ti, and show no difference of CPU performance! Brutal.

VANISHING OF ETHAN CARTER REDUX



Redux means that the game has been re-released in 2015 with Unreal4 engine instead of the original 2014 release with Unreal3 engine, and that shows - HT clearly adds to FPS and this is no margin error, because the results are very very constant within each run - great optimization.

WATCH DONGS 2



This must be a known case and i am glad to confirm that HT improves performance in Watch Dogs 2.

WITCHER 3



The final game is a revisit from the previous 2016 benchmark, and just as before we see that there is no performance difference whatsoever. This clearly had to be done, as GTX 780 Ti GHz Edition and GTX 980 G1 Gaming were averaging 59 FPS and 64 FPS, respectively, and clearly were holding the game compared to GTX 1080 Ti.
--------------------------------------------------------------------------------------------------------------------------------------------------------------

Unlike before, there is no general conclusion after this benchmark as what to think of the past generation Core i7 {4 cores/ 8 threads} processors hyperthreading these days. Many games show clear evidence of HT performance gains, but there are still so many games in which HT absolutely sucks. We have waited so long for Core i7 HT to gain ground on gaming, that eventually Core i5 {6 cores/ 6 threads } processors appeared and bested all existing previous generation Core i7 {4 cores/ 8 threads} processors in gaming! I guess what can i really say in the end is ''know your game'': do research before committing on long playing hours, recording and walkthroughs on your games with your Core i7.
 
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#2
Starting with a fact that is world wide known by now, HT does increase performance
Much like another axiom "th whole world knows 4 GB is not enough " (at 1080p) .... If i asked 10 people from within my tech circle, I'd expect at most 1 to concur with those two statements and at most 1 to say the opposite to both statements . So I guess I'm m not living in that world. I would expect 9 to say "It depends on several factors."

1. You mentioned "game runs at 144 hz" but is this being tested on your Dell S2415H 60 Hz Monitor or something else ? If so, other than AoS, I wouldn't consider the difference relevant.

2. But i think there's one factor that must be addressed. On my son's box for example, we have 3 BIOS profiles selectable via profile option option in in BIOS:

1. All Stock
2. Highest stable PC with HT ON (4.6 Ghz)
3. Highest stable PC with HT OFF (4.8 Ghz)

At the same OC (4.6 GHz), the cores ran 8 C hotter with HT ON. Some games will be problematic at 4.8 ... not many. But where HT leads i thinks this will eat into the advantage as the higher OC will negate some of that impact.
 
Joined
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Messages
641 (0.18/day)
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System Name Artas1984
Processor Intel Core i7 4770K
Motherboard Gigabyte GA-Z97X-Gaming 3
Cooling Noctua NH-D14
Memory Crucial Ballistix Tactical 32 GB DDR3 1600 MHz CL8
Video Card(s) Manli GTX 1080 Ti reference
Storage Samsung Evo 850 M.2 500 GB & Western Digital SE 2 TB
Display(s) Dell S2415H
Case Corsair Obsidian 800D
Audio Device(s) Asus Xonar Essence ST
Power Supply Evga 750 GQ
Mouse Razer DeathAdder 2013
Keyboard Roccat Ryos MK Glow
Software Windows 7 Pro 64 BIT
Benchmark Scores i've got a shitload of them
#3
2. But i think there's one factor that must be addressed. On my son's box for example, we have 3 BIOS profiles selectable via profile option option in in BIOS:

1. All Stock
2. Highest stable PC with HT ON (4.6 Ghz)
3. Highest stable PC with HT OFF (4.8 Ghz)

At the same OC (4.6 GHz), the cores ran 8 C hotter with HT ON. Some games will be problematic at 4.8 ... not many. But where HT leads i thinks this will eat into the advantage as the higher OC will negate some of that impact.
It does run hotter with HT on, right... I've noticed this with many other Core i7 processors. Anything above 4.5 GHz in my tested friend's system layed too much heat on his Dark Rock heatsink, and also was not Prime95 ready. I had to settle with 4.5 GHz.

1. You mentioned "game runs at 144 hz" but is this being tested on your Dell S2415H 60 Hz Monitor or something else ? If so, other than AoS, I wouldn't consider the difference relevant.
Ups, minor mistake, i meant 144 FPS. Will correct that.
 
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#4
One game that I found is helped significantly by HT is Kingdom Come.
I upgraded from a 2500k to a 3770k and gained in the starter town:
9 minimum FPS (46 to 55)
7 Average (53 to 60)

In some areas it was even more but I didn't bench there.

Of course this was with an RX 480 and not a 1080 ti.


Also FYI you typo'd "watch dogs" and it's pretty funny :laugh:
 
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