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i7-2600k hyper threading and gaming question

post #1 of 12
Thread Starter 
I need some help understanding about the hyperthreading and gaming. Ever since I got into this (late 2011), I've read that games do not use hyper threading or all of the cores etc. (i.e. Bf3) or very few do (i.e. BF4). Below are images of HWmonitor while playing BF3 that shows all threads (cores) being utilized and at times maxed out at 100%. So, if BF3 does not utilized all threads, then what is it that I am seeing or what is this telling me about my setup? I thought BF3 did not use all threads, but I HWmonitor is telling me otherwise. Please help me understand. Maybe I am misunderstanding how this works.

Thanks...Al



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post #2 of 12
BF3, just like BF4, do use the threads. Looks like your cpu needs to be oc'ed if it isn't. if it is . . . go higher.

You can also use Afterburner to monitor your usage. untick the temp sensors to make it easier to read.

edit: Turn off HT and watch all four cores get maxed out. mine did in BF3 with just 2 7970s.
Edited by rdr09 - 10/16/15 at 7:07am
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post #3 of 12
He's already at 4.6 ghz see the screen shots
post #4 of 12
Usage will change over time.

First, per core resource monitoring is not accurate at all. This means at any time all threads of a CPU can report something around 20%, 30%, 40%, and 10% usage on a quad core, but what is really happening is one thread is at 100% usage and the other three are idle.
Second, HWMonitor could interpret your cores cycling the false loads around, meaning that they could all report that they were at 90%+ at one point, and when you look at the maxed, it looks like 90% on any task at all if you let it run enough.
Third. It's not that games cannot use HT, it's that games typically won't scale well past four threads, which is when the scheduler will assign tasks to the virtual threads.
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post #5 of 12
Quote:
Originally Posted by Youngd8 View Post

He's already at 4.6 ghz see the screen shots

I'm blind. Then he needs to go higher or if in 1080 . . . go higher.

AB will show a better picture. HW only the highest spikes. But, those 100% are not a good sign. AB and HW, though, agree for the most part from my observation.

edit: @op, this is how AB will look like when ran in the background . . .

Single 290 and i7 4.5 HT off . . ..



never tried running 2 290s with HT off.

also, make sure windows power option is set to high performance. not sure how you oc'ed your cpu but i disable turbo and manually oc the cpu.
Edited by rdr09 - 10/16/15 at 8:16am
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post #6 of 12
Thread Starter 
Thanks everyone for chiming in. Yes, I am overclocked at 4.6 ghz (manually). I may try and go higher on the CPU OC. The monitor I use is 2560x1600 (30" Dell). Windows is set to max performance. I will give AB a try (EVGA's program is just a PIA for me at times) and disable HT to see the results. Rdr09 what do you mean the 100% is a not a good sign?

Thanks.
Edited by Methodical - 10/16/15 at 10:05am
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post #7 of 12
Quote:
Originally Posted by Methodical View Post

Thanks everyone for chiming in. Yes, I am overclocked at 4.6 ghz (manually). I may try and go higher on the CPU OC. The monitor I use is 2560x1600 (30" Dell). Windows is set to max performance. I will give AB a try (EVGA's program is just a PIA for me at times) and disable HT to see the results. Rdr09 what do you mean the 100% is a not a good sign?

Thanks.

i noticed your cpu downclocking to 4.4GHz, which tells me you have some power saving mode enabled. your cpu may be slow to react when the gpu needs it to maintain fps during heavy scenes such as when a tank explodes in BF3.

look over this oc'ing thread . . .

http://www.overclock.net/t/1100100/info-intel-2500k-2600k-overclocking-tips

i've never seen any of my cores when HT is enabled hit 100% but my 4.5 OC stays at that even during no load. i just rid of any power saving mode in bios and windows. this is with 2 290s, which are about equal to your single 980Ti.

Use AB with HT enabled as well. your cpu should be maxing out your gpu in BF3 and BF4.

edit: Save a profile for your current oc before making any changes. if you decide to change any.
Edited by rdr09 - 10/16/15 at 11:48am
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post #8 of 12
Thread Starter 
Quote:
Originally Posted by rdr09 View Post

i noticed your cpu downclocking to 4.4GHz, which tells me you have some power saving mode enabled. your cpu may be slow to react when the gpu needs it to maintain fps during heavy scenes such as when a tank explodes in BF3.

look over this oc'ing thread . . .

http://www.overclock.net/t/1100100/info-intel-2500k-2600k-overclocking-tips

i've never seen any of my cores when HT is enabled hit 100% but my 4.5 OC stays at that even during no load. i just rid of any power saving mode in bios and windows. this is with 2 290s, which are about equal to your single 980Ti.

Use AB with HT enabled as well. your cpu should be maxing out your gpu in BF3 and BF4.

edit: Save a profile for your current oc before making any changes. if you decide to change any.

Thanks. I will recheck in the BIOS to make sure there's no power savings going on. As far as the gpu useage, it's at 99%.
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post #9 of 12
Thread Starter 
Ok rdr09, I checked my BIOS and it was set to Auto OC, which was causing it to down clock as you stated. I can't recall making that change, but it was changed. I reset it back to manual OC. Power is set to max. Since I am water cooling I am going to slowly bump up the OC to see if I can hit 5.0; it's at 4.7 now. Think I can hit 5.0 with this CPU? Btw, I am currently mapping out my new build and looking at either the 5280 or 5930 cpu. Any thoughts?

Thanks again...Al
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i7-5930K MSI X99A XPower AC EATX 2011-3 Corsair Vengeance LPX 32gb DDR4-2666 Samsung 950 Pro 500gb M.2 
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post #10 of 12
Quote:
Originally Posted by Methodical View Post

Ok rdr09, I checked my BIOS and it was set to Auto OC, which was causing it to down clock as you stated. I can't recall making that change, but it was changed. I reset it back to manual OC. Power is set to max. Since I am water cooling I am going to slowly bump up the OC to see if I can hit 5.0; it's at 4.7 now. Think I can hit 5.0 with this CPU? Btw, I am currently mapping out my new build and looking at either the 5280 or 5930 cpu. Any thoughts?

Thanks again...Al

unless you are having other issues with your system or you have other tasks that would benefit in using a 5820 . . . a 4.7GHz sandy is more than enuf for a single 980Ti. Two - yes, i recommend X99.

i actually built one awhile back and saw not much difference with just 2 290s, which i think is the limit of my current system. i sold my x99 system and reinstalled my sandy.

any of your cores should not be hitting 100% with the rez you are using. Use AB to monitor usages.
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