High end PC with low FPS???

[Garack]

PR is VERY CPU demanding, from upgrading [email protected] to [email protected] i got 10-30 Frames more, depends on the environment.

My GTX470 at very high is idle in every situation

So get more CPU Power then a Athlon 2.

[AquaticPenguin]

I also have AVG, what did you do? Did you added pr.exe or bf2.exe to some exceptions lists?

I tried turning it off to see if it was the cause of the problems, then I installed Microsoft Security Essential instead because I couldn't be bothered to faff around with the thing.

Windows counts video RAM along with system RAM. 32 bit limits the system to ~3GB RAM total, it uses system RAM first and will exclude video RAM if system RAM meets the limit.

Sorry but that doesn't sound very realistic to me. Video memory is on the graphics card and completely independent from the main memory, it is handled by the GPU not the CPU. The CPU gives instructions and state changes to the GPU which does the processing and outputs to screen. It is the GPU which handles it's own memory and address space. Some GPUs do use main memory either out of cheapness or because they only have a small frame-buffer.

Meshes and textures will be stored in the GPUs memory, but for each object in the scene the CPU has to call the API telling it where and how to draw the mesh. A few thousands separate API calls will be taxing on a single core, especially as it also has to handle physics(to an extent), network traffic, I/O and Animation/Skinning(may be done on the GPU) among other things.

Newer games/engines probably handle objects better and newer versions of OpenGL/DirectX require less taxing work from the CPU by using the instructions given by the CPU more effectively.

Well my graphics card requires 450+ watts and i only have 300 so i'd say it just slows it down, it's like when you halve the power into an old style lightbulb and the light dims.

I would have thought that wouldn't work since light bulbs are simple analog devices and chips are digital and require stable voltages and power input. However I don't know much about electronics.

Then again, Watts aren't everything with power supplies. Higher quality ones are more efficient and much more stable, and Amps are also important. Also 450+ Watts is probably the recommended watts for the whole system, based on peak requirements not on idle or normal usage.

Probably made some mistakes in this so pick away.

[SmoothIsFast6]

It's the way bf2 handles rendering, that's what i've concluded to

unless we rewrite the engine or build a new one, we are in fact stuck with this dinosaur

and another thing u could just buy a 4 thousand dollar PC and run it at 120 fps!

[rushn]

I pretty much custom built my PC around the graphics card. So I made sure there was enough power, and I had the right motherboard etc. (That's why the other guy has the same MOBO and similar card)

also you dont need to make double posts there is an edit function

[whatshisname55]

I am confused now. I have heard my explanation of the 32 bit memory limits from multiple sources, however it is now being contradicted.
I'll have to do some research on the matter to find out exactly how it works. I'll get back to you when I solve this mystery. ??:

[Mines_Skyline]

it is not the motherboard. buy the 64 bit equivalent of your operating system and you will see 4 gb. trust me.

[AquaticPenguin]

I am confused now. I have heard my explanation of the 32 bit memory limits from multiple sources, however it is now being contradicted.
I'll have to do some research on the matter to find out exactly how it works. I'll get back to you when I solve this mystery. ??:

Please educate me when you find out, I've inevitably got it wrong too

[Cassius]

try to disable xfire, it slowed me down somewhat bad too.

[xWEESERx]

So your Windows version is 32 bit?
If that's the case, then that's most likely the problem. Because you can only use ~3GB of RAM the graphics card cannot make use of it's video RAM, which would definitely slow it down.

Success. Installed Windows 7 64 bit and now shes workin like a charm.

[whatshisname55]

Success. Installed Windows 7 64 bit and now shes workin like a charm.

Hey, what did I tell ya?

Glad it's working. However, I still need to find out what the exact reason is.

[AquaticPenguin]

Interesting...

Personally I've noticed very high RAM usage when playing PR, perhaps the OS is running low on memory and trying to page to disk (I've noticed on exiting PR, i'll often have an "increasing virtual memory" warning in my toolbar). Think i'll do some research, because the more I think about it, the more I realise I don't have a clue