Xeon E3/V5 Cstate/OC question...

[AndBugBear]

Hello, I believe this is my first time posting on this site.

There was a Question I asked on one of the forum I usually go to and there has been no response, maybe you all can help.

Here was the recent question posted on that forum:


Ok, I got the V3/E5 xeon cpu to 2.95ghz at all times, however if I do motherboard cpu ratio tweaking under the ai tweaker section, reload bios, cstates,etc is all turned on, then I go into windows, the speeds keeps bouncing from low speed to max speed(3.4ghz+)...

If I do full 100% usage on all cpu/threads, the cpu goes back to x28 Multiplier + the overclock bclck, but on idle and very low cpu usage, the multiplier goes high as 33-34, my question is there a way to make the cpu to run its x34 multiplier speed, even with cstate is turned on?

Seems like its working but the 3.4ghz only works on low to idle speeds, full 100% usage, it goes back to x28 multiplier.


Motherboard is asus x99-a(Bios Revision 2101/Latest)
Cpu is E3-2678 V5 Xeon cpu

 

[Burpo]

Well E3-2678 V5 doesn't show up anywhere, so that doesn't seem right. Do you have the S-spec number?

An E5-2678 v3 does show up, but with a base multiplier of 25. If you're seeing 28 all cores loaded, that's good.

http://www.cpu-world.com/CPUs/Xeon/Intel-Xeon E5-2678 v3.html

 

[AndBugBear]

Well E3-2678 V5 doesn't show up anywhere, so that doesn't seem right. Do you have the S-spec number?

An E5-2678 v3 does show up, but with a base multiplier of 25. If you're seeing 28 all cores loaded, that's good.

http://www.cpu-world.com/CPUs/Xeon/Intel-Xeon%20E5-2678%20v3.html

Thats because of turbo mode, no turbo mode = X
MAX TDP 120.0W

I mean come on, doesn't make any sense, when the cpu barely using anything, it goes like up to over 3.5ghz at times and at one time, I saw as high as 3.7+ghz, holy moly, then when more cpu cores/usage is being utilized, the more it goes back to my bclck X multiplier setting, which is 2.95ghz, geez.

If I don't use cstate, the speed will go back to my normal bologna, again, mulitpler X bclck.

 

[Burpo]

That's the way it works. When there's no load the cpu will show max turbo, but when there's a load, the cpu adjusts the speed to a lower multiplier. I wouldn't complain if I had 12 cores/24 threads working at 2.95Ghz. That's a beast!

 

[laamanaator]

I don't know if there's a way to make the CPU run at it's max all cores turbo with C-states on, but there might be one without the C-states. There's an option 'on' in X58 motherboards for the CPU turbo, which makes the CPU run at its max all cores multiplier. There might be one in LGA 2011v3 socket motherboards, but I've got no information on that. EIST doesn't do anything if enabled when CPU turbo is 'on' and C-states also shouldn't have any effect, but I could be wrong. Worst case scanario is that it has no effect, so definitely worth trying, if plausible :thumbsup:

But as Burpo stated above, that's already quite the machine!

 

[Burpo]

After some research, it appears that E5 2678v3 is an ES (engineering sample) of what was released commercially as the E5 2680v3. Max turbo, all cores loaded is indeed 2.9GHz
Processor Core Count Base Clock All-core Boost Maximum Boost
Xeon E5-2680v3 12 2.5GHz 2.9GHz

https://www.pugetsystems.com/blog/2...-What-You-See-Is-Not-Always-What-You-Get-675/

 

[AndBugBear]

After some research, it appears that E5 2678v3 is an ES (engineering sample) of what was released commercially as the E5 2680v3. Max turbo, all cores loaded is indeed 2.9GHz
Processor Core Count Base Clock All-core Boost Maximum Boost
Xeon E5-2680v3 12 2.5GHz 2.9GHz

https://www.pugetsystems.com/blog/2...-What-You-See-Is-Not-Always-What-You-Get-675/

Thanks a bunch about this site.

Well If I am installing programs,etc its clocking like 3.3 to almost 3.5 ghz, which is alot better then 2.95ghz.

I also have a 6 core i7 5820k @ 4.6ghz but I took that cpu out for this one, there is a significant difference in installation time because when installing a program, it does not even use all available cores or threads, no needs to, for this reason, the 6 core @ 4.6ghz wipes the 12 core @ 3.4ghz while during installation on one of my mmorpg game.

6 core @ 4.6ghz took like 8+mins whereas the 12 core @ 3.3 to almost 3.5ghz took like 16+mins, holy jeezus, big difference, thats because all the cores ain't using jack diddly doo when during install, there was one core, core 7(core temp) using like 39-49% cpu usage or so, the other 5-6+ barely using anything at all. Installing a program in general don't need to use much anyways.

Now in multi core application like cinebench,etc, this is where 12 core kicks the 6 core in the dirt.

If I leave the 12 core @ 2.5ghz and do cinebench, the score is like identical to my 6 core @ 4.6ghz but @ 2.95ghz now, it floors it right off.


Question here, is there a program out there to can force the cpu usage to all cores @ almost 100% while you install any program that takes a bit while???

I never really asked this nor have I really look into it, just curious if there was a program out there that can force this.

Even though you can change cpu affinity when you do the task manager thingy, like thats going to help any, lol.


So if anyone knows a way or a program that can force the cpu to work alot harder doing installs, please let me know because I want to make use of the available cores.

This cpu and I also got another of the same one, is going to be used for my next nvidia pascal system, mainly for folding@home, cpu rendering, gaming, and probably getting into 3d modelling.

 

[AndBugBear]

Also, I did cinebench with the Cstate turned on and using 2.95ghz as usual, my score was lowered by lil over 100 points, r15 cinebench.

I also noticed that there is 2 core using some power on idle, even there is nothing running at all, strange.

UPDATE:

The extra process was coming from the background os explorer itself, shut off that, then retested cinebench, almost 1800 points.

 

[VirtualLarry]

Question here, is there a program out there to can force the cpu usage to all cores @ almost 100% while you install any program that takes a bit while???

I never really asked this nor have I really look into it, just curious if there was a program out there that can force this.

Even though you can change cpu affinity when you do the task manager thingy, like thats going to help any, lol.


So if anyone knows a way or a program that can force the cpu to work alot harder doing installs, please let me know because I want to make use of the available cores.

This cpu and I also got another of the same one, is going to be used for my next nvidia pascal system, mainly for folding@home, cpu rendering, gaming, and probably getting into 3d modelling.

Uhm, no, the software has to be written for multiple cores.

 

[AndBugBear]

Yes I am going for a dual cpu configuration when the pascal gpu's comes out, supposedly supposed to be soon.

Mainly for folding@home,Rosetta@home,cpu rendering,gaming and maybe getting into 3d modelling one of these days,

Can't wait for the new pascal build.

 

[AndBugBear]

Ok, remember when I said eariler it took me like 16+ mins to do that mmorpg I was installing on this cpu and the 5820k @ 4.6ghz took me like 8 mins+, well that was with Cstate turned to auto but the speed was going from 2.95-3.5ghz at times during the install, now I wanted to see what the differences when I take off the Cstate(Previously set to auto), And guess what??? Took about 10-11 mins, thats a big difference compared to 16+ mins, jeez.

I thought the Cstate would give better install time due to the speed keeps bouncing back and forth higher then 2.95 but guess I was wrong, take off Cstate, seems the install time has been Drastically been reduced, this is good to know.

CRAZY!!!!

UPDATE:

Yes I am using Primocache program for my raid 0 ssd's, however, that wont affect install time fars I know, based from what I have observed.

Now if I set up Primocache for backup internal hdd or devices such as my sansa mp3 player,etc., then transfer the data over to those drives then yes, absolutely BIG difference, but far as install performance on the main hdd with primocache from what I have observed, basically no difference.

 

[AndBugBear]

Hello again, this is kind of off topic, quick question:

When stress testing my cpu, why is my multiplier going from x28 to low as 26.5 when my Cstate and intel speedstep is turned off??

Originally I thought the Bclck was set to high, was testing at 105.8, then went back to 105.5, was doing the same thing but not as bad, does this mean that the Bclck is still set to high, is that whats causing the issue???

 

[AndBugBear]

Hello again, this is kind of off topic, quick question:

When stress testing my cpu, why is my multiplier going from x28 to low as 26.5 when my Cstate and intel speedstep is turned off??

Originally I thought the Bclck was set to high, was testing at 105.8, then went back to 105.5, was doing the same thing but not as bad, does this mean that the Bclck is still set to high, is that whats causing the issue???

 

[Burpo]

The CPU is staying within TDP. As cores load, it drops back speed. All perfectly normal.

 

[AndBugBear]

The CPU is staying within TDP. As cores load, it drops back speed. All perfectly normal.

Is there anyway to bypass the tdp??

I tried changing the turbo tdp, that made squat diddle doo difference.

 

[Burpo]

No, that chip is not designed to overclock. It is not a K or X series.

 

[AndBugBear]

The CPU is staying within TDP. As cores load, it drops back speed. All perfectly normal.

You know whats funny???

When I do folding@home with ALL cpu + threads, sucker stays where I set it at, the multiplier doesn't go down, then when I do aida extreme 560 or especially Prime95, wham, it goes down and folding@home puts just as much heat as prime95, even though prime95 uses avx,etc,etc.

When I checked folding@home usage, ALL cpus + threads are its 100% maximum usage...

I run folding@home @ full throttle, used to be medium but now full.

 

[AndBugBear]

No, that chip is not designed to overclock. It is not a K or X series.

I knew that from the start that I was going to be limited but come on man, thought wasn't going to be this bad, lol, well at least I can still do it @ 2.95 for the time being, especially with folding@home because I do tons of that already and Rosetta@home.

 

[AndBugBear]

Theres a program out there called throttlestop, Going to give it a try.

 

[AndBugBear]

Ok, I checked folding@home tdp with Throttlestop program, use over 120w tdp but for some reason it doesn't go into throttle mode.

The cpu seems to throttle if its over like 130w tdp'ish or so.

 

[AndBugBear]

OK I am starting a new WTF thread as this is getting off topic and yes the new thread is wtf is this, Take a look please, it will blow your socks off.