From 60 to 9 FPS?

[Skuzzy]

Dx9 is too CPU intensive. For some reason AH only uses one of my eight cores.

If the game is only using one core, it is due to the workaround AMD provided for detection of CPU's which do not have thread safe high resolution timers incorporated into them.

[PR3D4TOR]

Do you mean the HPET? The FX-8350 most certainly has HPET. After all the technology was developed jointly by AMD and Microsoft.

[Skuzzy]

Do you mean the HPET? The FX-8350 most certainly has HPET. After all the technology was developed jointly by AMD and Microsoft.

Nope.  Many AMD CPU's did not include high resolution timers for each core.  AMD provided a work-around for applications which depended on them.  The work-around was to test for the existence of working (key word there, means more than just being available) high resolution timers for each core, and if they were not available, then tell the application they are not available.

Again, this work-around was provided by AMD.

[TequilaChaser]

If you have overclocked that CPU every since you have had it, I would say all bets are off.....

[Skuzzy]

If you have overclocked that CPU every since you have had it, I would say all bets are off.....

Yes, thanks TC, that is one I forgot about.  That can impact the high resolution timer usage.

[PR3D4TOR]

Nah, with custom water cooling I'm keeping it cooler than at stock clock speeds and air. Barely require any extra voltage for such a modest overclock. If I wanted to I could push 5 GHz with this setup, but I wanted the CPU to last a while and kkep temps and noise to a minimum.


That's interesting Skuzzy. Even on just one core I normally get 200-500 FPS with Vsync off. It must be something about that big base that's just not right.

[Skuzzy]

Nah, with custom water cooling I'm keeping it cooler than at stock clock speeds and air. Barely require any extra voltage for such a modest overclock. If I wanted to I could push 5 GHz with this setup, but I wanted the CPU to last a while and kkep temps and noise to a minimum.


That's interesting Skuzzy. Even on just one core I normally get 200-500 FPS with Vsync off. It must be something about that big base that's just not right.

It just means you are probably going to see a wider swing in the frame rates and stutters (little ones) could be more prevalent.

[TequilaChaser]

Not to get to technical here, running a CPU clocked higher than the factory clocked settings even if your CPU came unlocked so it is capable of being overclocked

Opens the door for the "high resolution timer for each core", to become unstable and hence AMD's provided work around to engage, when the timers fall out of sync with each other...the timer tolerance is very close to something like "1 tic or lesser" going from my aging memory

Hope this helps

TC

[PR3D4TOR]

Easy enough to check. I just loaded up the default CPU settings running everything at stock. AH still uses only one core. Never had this issue with other games, even Bethesda's poorly optimized mess of games manage to use all my cores. Still it matters not, since one core is clearly enough to run AH at 60+ FPS except over these problem bases, and my CPU cannot possibly affect all the other players having FPS drops over these bases...

[Skuzzy]

Not all games need or make use of high resolution timers.

[PR3D4TOR]

Ok. Out of curiosity, why do you use them?

[Skuzzy]

The answer to that could come very close to some of our IP.  Close enough I do not feel comfortable answering it.  It would be up to HiTech to answer that.

[TequilaChaser]

Ok. Out of curiosity, why do you use them?

Outside of what Skuzzy posted, Aces High is a game that deals with having to deal with massive math calculations just for a single aircraft flying, heck, just show them the picture of all the wing pressure points that are being calculated in reference of that "Stall thread" as well as airflow, torque, thrust, etc.... then combine that with the atmospheric arena settings and multiply that by the number of players playing

Gives you a little look in to why those "high resolution timer for each core" is needed, because of HTC's strong desire to make each plane fly as close to the real thing

Hope this helps

TC

[TequilaChaser]

This post wasn't needed

[2chance]

I use dx9 and my frame rates dropped to over half..couldnt even play..all this happened last night ..all the times before everything was fine