Campaign combat became unplayable.

Gremlin_WoH said:
Siggi, to feed that graphics card with data fast enough you need a fast CPU. I have an E8400 3 GHz overclocked to 4.15 GHz on a ASUS Rampage Formula mainboard and my 9800GTX is flying now at 1920x1200 screen resolution. About 40 to 60 FPS. Never falls below 30 FPS. I want to tune the graphics settings a little bit more as I am running 2x Anti-Aliasing and no Anisotropic Filtering. Your 8800GTX should be as fast as my 9800GTX especially yours has 768MB RAM mine 512MB only.

Generally you can overclock dual cores better than quads. Your quad is consuming 125 W and when overclocked that much about 200W as power consumption is non-linear with raising clock speed. If you say it tops out at 65°C in Prime could it be it tops out there because the processor gets constantly throttled and de-throttled such that it just keeps going on the 65°C border?

Also memory data transfer bandwidth and low latency is important. If you have the Maximus Formula II there should be some setting in the BIOS which influences the 'Performance Level' (what it is called on my board's BIOS, may differ on your's).
Click to expand...

If it's being throttled I'd be suprised, as Everest doesn't show it. Fan speed would change too I'd imagine, and I'd hear that.

I've set the system back to stock (CPU back to 2.4ghz, RAM back at 1066mhz) and it's made no difference that I can see in QC, other than a couple of frames less. Did seem slightly better at the airfield when I landed though, but that could be because it was a different airfield than I'm used to (didn't recognize it's layout).

Can't think of much else to try other than a new CPU and/or a re-format.
 
I too have noticed the same affliction. When doing my tweaking, etc., I might show 25 or so on takeoff and climbout and begin to get excited, but once the planes all start milling about or after about 3 minutes into the mission, my frame rate drops to 12 or 14 and never goes back higher. Even if I make it back to my airfield on landing where I have the same perspective (low level, not multiple fields in sight) as takeoff, I am usually landing with 5 or 6 fps if I'm lucky.
 
Gremlin_WoH said:
Siggi, to feed that graphics card with data fast enough you need a fast CPU. I have an E8400 3 GHz overclocked to 4.15 GHz on a ASUS Rampage Formula mainboard and my 9800GTX is flying now at 1920x1200 screen resolution. About 40 to 60 FPS. Never falls below 30 FPS. I want to tune the graphics settings a little bit more as I am running 2x Anti-Aliasing and no Anisotropic Filtering. Your 8800GTX should be as fast as my 9800GTX especially yours has 768MB RAM mine 512MB only.

Generally you can overclock dual cores better than quads. Your quad is consuming 125 W and when overclocked that much about 200W as power consumption is non-linear with raising clock speed. If you say it tops out at 65°C in Prime could it be it tops out there because the processor gets constantly throttled and de-throttled such that it just keeps going on the 65°C border?

Also memory data transfer bandwidth and low latency is important. If you have the Maximus Formula II there should be some setting in the BIOS which influences the 'Performance Level' (what it is called on my board's BIOS, may differ on your's).
Click to expand...

Good call mate, it was indeed being throttled. Thankyou for planting that seed. :)
 
Polovski said:
One thing Siggi your CPU is hugely Overclocked from 2.4GHz to 3.2Ghz.

Check you do not have any CPU throttling enabled when hot CPUs can slow down too (if you do, then I'd lower to a more conservative over clock some to test before turning off any throttling).
Also memory performance can go down when adjusted to cope with those timings (1066 to 711mhz?)
Click to expand...

And thankyou also Pol, you both nailed it. :)
 
loads of great info here for people tryin to get better fps. hi have a couple of questions.

1 - ive been thinkin of overclockin for while now and have read conflictin reports on what is a safe temp fir the cpu to be runnin at. some say not over 60c, others say 70 or 80c is safe. what are your OC's cpu runnin at while at full load?

mines is runnin at 60c at full load and i havent even done anything yet, but i dont have any extra fans which im gonna sort 1st.

2 - how do i know if my cpu is throttling back due to temp?
 
1. It depends on the CPU which temperature is safe. For example the maximum temperature for my Core2Duo E8400 and for all dual core 45nm processors is Tjmax = 105°C. This is the officially specified safe temperature. As Intel changed the method to read out the temperatures for 45nm processors you need programs that have adapted to this new method for the temperature reading as for example Real Temp. What is safe for you depends on your personal preferences. Some say Tjmax - 15 °C = 90°C is still safe for a longer life of the chip some say lower temperatures are safer. The hotter the chip runs the less lifetime it will last. Mine runs at 40°C idle and 62°C full load with a comparably cheap air cooler (Arctic Cooling Freezer 7 Pro). It was running at 25°C idle and about 40°C full load with stock settings. Also case ventilation plays a big role as well as ambient air temperature. If you think Prime95 is putting full load on a CPU then try Intel Burn Test. This will raise your temperatures 10°C above those you encounter with Prime95 :icon_twi:

2. If your CPU fan is running on full speed and your system feels sluggish? Seriously, you could see it with Real Temp when temperature reaches Tjmax of your CPU and also when clock rate drops. But as long as it does not hit the Tjmax temperature limit it should not throttle due to overheat.

If you want to overclock prepare for a time consuming task. Especially stability tests with Prime95. No system is like the other.
 
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