Hyperthreading ON and OFF: Pictures (on 4790k 4.7 ghz 1070ti) - Overclock.net - An Overclocking Community

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Hyperthreading ON and OFF: Pictures (on 4790k 4.7 ghz 1070ti)

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post #1 of 16 (permalink) Old 02-15-2019, 02:07 AM - Thread Starter
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Hyperthreading ON and OFF: Pictures (on 4790k 4.7 ghz 1070ti)

Here is my test.

With no hyperthreading, I used 2 tests. After a long game session of R6 Siege, and after a restart. With HW Monitor and MSI afterburner running in the background.

Hyperthreading OFF wins this battle, and also...there were no lag spikes on CPU with Hyperthreading off, besides when the map was loading in. Benchmark also shows that there are no dips in FPS.

After 5 years of gaming, I realized that those game stutters were caused by my CPU's Hyperthreading. The more you know!

I also disabled 4 cores and left 4 when doing a separate test with Hyperthread enabled, to simulate NO Hyperthread environment while the rest of the processes remain at full Hyperthreading, by going into Task Manager and setting affinity to 4 cores for R6 Siege.exe, and it performed better than 8 Cores enabled, and had no dips of FPS in benchmark run.

Thing to notice as well is that graph for gpu response on 4 Core manually set in Taskmanager for R6 Siege and Hyperthreading ON was almost unaffected by any lag spikes, in comparison to 8 cores enabled and Hyperthread on, where spike were on the graph, jumping in an out randomly. Hence you can see 8 cores resulted in dips to 40 FPS, which is shouldn't be.

It was definitely felt over the years, but I never figured out how to fix it. I tried setting different memory settings, I played with CPU voltages, etc.

Hyperthreading was the case. New CPUs are not running in the same kind of issues as far as I can tell, but my i7 4790k happens to have it.

Try it out, test it out. Perhaps it will be better.

Also my CPU temps dropped 5-12 Celcius with Hyperthreading OFF from what it was with Hyperthreading ON.

Also PC is consuming about 18 watts less when gaming with Hyperthreading ON, and I don't see any difference in computer speed.

I also tested start up times, and realized that it starts identically quick. I used the watch to compare.
If you are gaming, give it a shot, I noticed my FPS boosted in game by about 10-15 FPS, which is big for me, without doing anything, and reduced any kind of lag spike on GPU/CPU, it's flat on the graph with Hyperthreading OFF.

Separate video online ran tests in 10 games, and all of them performed better with Hyperthreading OFF with i7 4790k

Free FPS and stable frames. WHY NOT!
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post #2 of 16 (permalink) Old 02-15-2019, 02:13 AM
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Turning HT off was always said to be a boost in FPS games. Looks like there might be some truth to it after all.


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post #3 of 16 (permalink) Old 02-15-2019, 02:15 AM - Thread Starter
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Quote: Originally Posted by speed_demon View Post
Turning HT off was always said to be a boost in FPS games. Looks like it was true all along.
Yeah, I never believed it either, I tried it before, but those games had no benchmark tools.
I had FPS dips and stutters since I had this CPU in 2015

Never could isolate the issue even with my OCD. I felt it was CPU, but I had no idea what it was.
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post #4 of 16 (permalink) Old 02-15-2019, 02:24 AM
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By FPS I mean first person shooters. Players in that type of game are ultra competitive and always looking for an edge. Makes sense they would have tried doing this as they are pretty creative when it comes to performance.


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post #5 of 16 (permalink) Old 02-15-2019, 03:49 AM
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There are games that benefit HT Off. Some with HT On. Now, if a game needs it, it is good to know its there.
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post #6 of 16 (permalink) Old 02-15-2019, 03:55 AM
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Plus that drop in temps will allow you to bump your OC slightly

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post #7 of 16 (permalink) Old 02-17-2019, 08:20 PM - Thread Starter
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Quote: Originally Posted by speed_demon View Post
By FPS I mean first person shooters. Players in that type of game are ultra competitive and always looking for an edge. Makes sense they would have tried doing this as they are pretty creative when it comes to performance.

True. I play FPS most of the time. I misunderstood what you meant by FPS the first time :-)
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post #8 of 16 (permalink) Old 02-18-2019, 08:32 AM
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I tried that with GTA 5,night and day difference...Hyperthreading off...GTA 5 stayed at a solid 80fps,maybe drop to 60FPS once in a while...Gsync fixes any screen tearing

Hyperthreading on... GTA 5 80FPS will drop to 30FPS,it studdered with my old monitor but my new one has Gsync so it dosent studder.. difference in temps too,5 or so degree's lower with HT off

Battlefield 5,i didn't really notice any real diiference,still got 90-100FPS with 75+ drops in FPS

Going to try no HT with Antham,,, im playing the 10 hour trial,ultra settings NO AA,cant get more than 40 -50 FPS with that game

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post #9 of 16 (permalink) Old 02-18-2019, 08:39 AM
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Hi,
HT has been under attack for a while now by MS and Intel for security hole patching.

Rendering takes the biggest hit from HT off obviously taking twice as long to do anything cinebench or any blender rendering file will show a large hit in score or rendering time.

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post #10 of 16 (permalink) Old 02-19-2019, 12:08 AM - Thread Starter
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Quote: Originally Posted by trailer park boy View Post
I tried that with GTA 5,night and day difference...Hyperthreading off...GTA 5 stayed at a solid 80fps,maybe drop to 60FPS once in a while...Gsync fixes any screen tearing

Hyperthreading on... GTA 5 80FPS will drop to 30FPS,it studdered with my old monitor but my new one has Gsync so it dosent studder.. difference in temps too,5 or so degree's lower with HT off

Battlefield 5,i didn't really notice any real diiference,still got 90-100FPS with 75+ drops in FPS

Going to try no HT with Antham,,, im playing the 10 hour trial,ultra settings NO AA,cant get more than 40 -50 FPS with that game
Nice, glad you noticed a difference. This is why I made this thread
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