Interesting GPU/CPU Usage

[Igo kyu]

Originally Posted by EZ1

But the CPU usage stays relatively low and does not fluctuate regardless of the GPU usage.

I suspect (I would welcome clarification from someone who really knows) that Hyperthreaded CPUs only ever run up to half speed, because there are half the number of cores that Windows thinks there are, and TANSTAAFL.

[Buzpilot]

If you disable hyperthreading in Bios, will it use 4 cores 100%, instead of 8 virtual ones at 50% ?

[Ailantd]

Not sure about this, but also could be that shaders to render terrain were a lot more expensive than shaders to render buildings. Also trees have a lot of geometry, same or even more than buildings at similar distances. If all this is the case that could be a lot less work to gpu in city that in landscape.

[Stefem]

Originally Posted by Igo kyu

I suspect (I would welcome clarification from someone who really knows) that Hyperthreaded CPUs only ever run up to half speed, because there are half the number of cores that Windows thinks there are, and TANSTAAFL.

Windows recognize both physical and logical cores as independent unit, in fact prior to Win 7 the OS thread scheduler not even cared if a core was physical or logical.
The Windows task manager shows the average of all CPU cores usage including logical cores but also can show (depend on configuration) a graph for each core, whether it is physical or logical.

[Fall_Pink?]

Originally Posted by Stefem

Windows recognize both physical and logical cores as independent unit, in fact prior to Win 7 the OS thread scheduler not even cared if a core was physical or logical.
The Windows task manager shows the average of all CPU cores usage including logical cores but also can show (depend on configuration) a graph for each core, whether it is physical or logical.

The HT cores are just parked with CoD whereas the real, physical cores are active with CoD, but cpu power is not the issue with this game.

An i7 or fast i5 is more than enough. Heck, even when I underclock my cpu to 2.8 Ghz it still runs pretty good.

It's just the buggy 3d mode (full, pseudo..) and gpu clock speed that worries me. Sometimes the game starts and my vid card stays at 157 Mhz no matter what. I shut it down and change to pseudo, and all of a sudden the vid card is now at 850 Mhz. Next time, nothing has changed in between, it's back at 400 Mhz and sometimes even back to 157 Mhz.

This is really weird game behavior which is a bit unexpected.

Rgs,
FP

[Stefem]

Originally Posted by Fall_Pink?

The HT cores are just parked with CoD whereas the real, physical cores are active with CoD, but cpu power is not the issue with this game.

An i7 or fast i5 is more than enough. Heck, even when I underclock my cpu to 2.8 Ghz it still runs pretty good.

It's just the buggy 3d mode (full, pseudo..) and gpu clock speed that worries me. Sometimes the game starts and my vid card stays at 157 Mhz no matter what. I shut it down and change to pseudo, and all of a sudden the vid card is now at 850 Mhz. Next time, nothing has changed in between, it's back at 400 Mhz and sometimes even back to 157 Mhz.

This is really weird game behavior which is a bit unexpected.

Rgs,
FP

Yep, but this is a driver bug, you can't blame devs for this

[Fall_Pink?]

Originally Posted by Stefem

Yep, but this is a driver bug, you can't blame devs for this

It is? AMD is aware of this bug and 1C raised it to AMD or is it because the game does not really enter 3d mode?

Rgs,
FP

[Stefem]

Originally Posted by Fall_Pink?

It is? AMD is aware of this bug and 1C raised it to AMD or is it because the game does not really enter 3d mode?

Rgs,
FP

What do you mean by "the game does not really enter 3d mode"?

Is the driver that has to set the graphics card in "3d mode" when an heavy task is detected, NVIDIA's cards does not have this problem.

[Fall_Pink?]

Well, I mean real full screen. Not a stretched window or something else.

[335th_GRAthos]

Originally Posted by Fall_Pink?

Sometimes the game starts and my vid card stays at 157 Mhz no matter what. I shut it down and change to pseudo, and all of a sudden the vid card is now at 850 Mhz.

Let me see, have you removed the small Ubisoft video just before the loading of CoD?
If not, do so and it will probably solve your issues.

~S~