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CPU stress test tool?

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I use CPU-Z, Cinebench, and gaming sessions. Really nothing more intense then that for my personal use.
 
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i use the cpuburner that comes with furmark.. its small neat and seems to do the job..

the thing is with multiple cores/theads (9900k) it all come down to how many of them are in use and generating heat.. gaming for sure isnt a valid cpu test.. less than half the possible cpu power is in use..

but in the end if the system is stable doing what the user normally does with it that is all that matters..

trog
 
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That's......that's a ummm, interesting way to do it...

Why is what I ask? You're limiting things by temps not stability. The chips TJMax is 100C and will throttle on its own. When stress testing if you keep your clock speed and voltage at appropriately levels for your cooling and stress test, then you test for CPU stability and not temps.

Unless I am missing something that method doesn't make much sense to me.
Instead of just ignoring the existence of some types of CPU loads, I will find the maximum loads I am fine with (stable and temps wise), and cap my CPU slightly above those limits. I guess I can just avoid running those apps, but I like to cap it so at least my machine doesn't crash during those loads. Let's call it a little extra protection, as I feel the built in ones often are set a little too high. At 100°C my CPU might compute, but I don't :)
 
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I used to stress test my i7 7700k with the x264 tool...

Now I've got a i7 9700k to test and cannot find that tool. I find that prime 95 is a bit too intense and doesn't represent the kind of load the CPU will be under.

What do you guys use for stress testing CPUs nowadays?
30 minute load in da vinci,then handbrake,then use some cpu heavy game and play for an hour or two at lower resolution.that's what I do.if I'm not borderline with voltage I keep the working settings and add 0,010-0,015v just to be sure.Mine is fine with everything I do at 1.29v but I run it 1.305v anyway for 4.2ghz.For 4.3ghz though it needs 1.385v but I'm not adding any more,but I'm only using it for gaming anyway.
 
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Just keep casually mentioning you're considering replacing it with a Ryzen. That should stress it enough :D
lol that made me laugh, thank you, made my day lol
 
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Prime 95 26.6 1344K and ASUS Realbench are a good stress test for me.
It draw the same current and power like my most demanding programs (V-Ray / PR).
Important key for me is it must pass those test without WHEA error in HWInfo 64.
 
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the thing is now we have more cores/threads than most people are going to use does it make sense to stress test with something that uses all cores and threads.. i am not so sure it does..

if all someone does is game stress testing with all cores firing is gonna limit real world performance in gaming for example.. which is why i am now running my 9900k at higher speeds with HT off..

trog
 
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Aida64's built in one, CPU burner, Intel's extreme tuning utility, Prime 95, OCCT. There's plenty of good options out there.
 
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To start with, ill run intel processor diagnostics tool. Then ive found that running memtest with half your memory loaded up, a gpu-z render test and a cpu-z stress test all at the same time to work pretty good. It stresses every part of the system. from there ill usually do a run of prime95 for 15minutes after all this and if i have no bsod's or WHEA errors in the event log i call it good. prime95 is a good test because its comparing the answers your proc gets to known good answers. thats why its a must in my opinion.
 

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the thing is now we have more cores/threads than most people are going to use does it make sense to stress test with something that uses all cores and threads.. i am not so sure it does..

if all someone does is game stress testing with all cores firing is gonna limit real world performance in gaming for example.. which is why i am now running my 9900k at higher speeds with HT off..

trog
Yes... windows bounces which cores are in use around, so you need to know they're all stable.
You also need to know your CPU and VRM cooling (and PSU) can handle the power draw of all the cores active at once, because it does happen.
 
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Yes... windows bounces which cores are in use around, so you need to know they're all stable.
You also need to know your CPU and VRM cooling (and PSU) can handle the power draw of all the cores active at once, because it does happen.
Absolutely! To not test using them all is a setup for failure eventually.
To start with, ill run intel processor diagnostics tool. Then ive found that running memtest with half your memory loaded up, a gpu-z render test and a cpu-z stress test all at the same time to work pretty good. It stresses every part of the system. from there ill usually do a run of prime95 for 15minutes after all this and if i have no bsod's or WHEA errors in the event log i call it good. prime95 is a good test because its comparing the answers your proc gets to known good answers. thats why its a must in my opinion.
wow... that's some overkill... are you mission critical to go through all that?
 
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does anybody know how windows handles its cores/thread when running software that only uses lets say half of them..

trog
 
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does anybody know how windows handles its cores/thread when running software that only uses lets say half of them..

trog
What do you mean by this exactly? As in does it stay on the same cores and threads or rotates? Fire up an app and see. Chances are if the app is up, it will stay on the same cores. If you close and reopen, it will use different cores. There typically isn't a built in affinity if that is what you are getting at.....
 

bug

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What do you mean by this exactly? As in does it stay on the same cores and threads or rotates? Fire up an app and see. Chances are if the app is up, it will stay on the same cores. If you close and reopen, it will use different cores. There typically isn't a built in affinity if that is what you are getting at.....
what i am getting at is there maybe a downside to having more cores/threads than you are ever going to need.. one downside is price another is heat.. especially when stress testing with software than fires them all up when in real life nothing else ever will..

trog
 

bug

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what i am getting at is there maybe a downside to having more cores/threads than you are ever going to need.. one downside is price another is heat.. especially when stress testing with software than fires them all up when in real life nothing else ever will..

trog
Heat is not an issue. The issue is when threads migrate from core to core, you'll have to rebuild the cache. But schedulers are usually architecture aware, so they don't move threads to a "far away" core to avoid this.
 
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what i am getting at is there maybe a downside to having more cores/threads than you are ever going to need.. one downside is price another is heat.. especially when stress testing with software than fires them all up when in real life nothing else ever will..

trog
That's the thing... in real life, they will all be used at some point so it all needs to be tested. If you have a 8c/16t processor and shut off HT, then 8c need to be tested. If you enable HT again, it all needs to be tested again.

But, few (who are sane) would buy a CPU with HT and disable it. It makes more sense to buy the CPU w/o HT then to pay the premium and disable it. That said, I have a 16c/32t CPU and I disable HT because nothing I do uses more than 16c/t. If I paid for it though, I would use it. But, it's a review CPU so nothing is lost.
 

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does anybody know how windows handles its cores/thread when running software that only uses lets say half of them..

trog
they bounce around unless you lock them, as an example the third gen ryzens have different max core clocks per core (so one may boost to 4Ghz while the others do 3.9) and windows has some complicated logic to shuffle things around for max performance - hence the logic updates in W10 1903, and the ryzen chipset drivers.

i dont thing anyone here on this forum can come close to guessing how it fully works, as it will vary depending on drivers, OS patches, other running apps, etc.
 

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... I have a 16c/32t CPU and I disable HT because nothing I do uses more than 16c/t....
Obviously you have never run Microsoft's powerful stress test

 
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apart from cpu stress testing tools nothing i use needs more than 8 cores.. i have tried my 9900K in all configurations how hot it runs is a pretty good indicator of how many cores/threads are in use.. it games at less than 70C but the usual stress test will soon have it hitting 100C..

as for paying for something and then turning it off.. well once the deed is dont and lessons are learned its all academic to me..

with hyper thread off i can run my 9900k nicely at 5 gig.. with it on i am limited to 4.8.. so what i have is a better binned 9700K that will perform better for the things i do than if i run it with hyper threading on..

bear in mind i can always turn HT back on if my usage changes.. :)

i did say when i bought the 9900k and gave it a few runs it was a waste of space.. but 8 real cores at 5 g and 1.232 core voltage will do me fine for now.. he he..

my current game is division 2.. my cpu temps at 5 gig never go over 68 C.. i happen to think that my cpu will do a better job just running real cores than having to figure out a bunch of virtual ones as well.. but i could be wrong.. :)

trog
 
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@trog100 I also run quite often with SMT disabled. Runs cooler, a little more epeen per core and as you mentioned, there's not much that really will scale beyond 8 cores/threads (gaming daily apps)
In the meanwhile, it also helps with a higher static overclock. I have a much easier time getting 4.3ghz stable (2700X) with SMT disabled. In fact 4.1ghz is about the best I can swing with SMT enabled.

Nice to see I'm not the only person that enjoys using a cpu with the HT/SMT feature disabled.
 
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