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HL2 Games framerate JUMP

post #1 of 6
Thread Starter 
Current Specs;

MSI AMITHYST motherboard (or something like that..from an HP)
AMD Athlon 64 4200X2 Stock HS (I think..)
2x512 Corsair XMS Pro 2-2-2-5 in DDR(PC3200)
BFG GeForce 7800GT OC PCI-e 16x (256Mb GDDR3)
SATA 150 Seagate HDD 250GB



When playing any HL2 based game (CS:S for example) I get very jumpy framerates. It will jump from 160FPS to 50FPS, and back up again. This happens very rapidly, all I see in CL_SHOWFPS is it going from a three digit number in green, to a 2 digit number in red (red = below 50 I think). I changed my settings to FPS_MAX 30, which should limit my Framerate to 30 frames per second. The same thing happened. It went from 30 to 14 and back up, several times per second.

This causes laggy gameplay. It is rendering smooth, but jumpy. It feels my computer is running SuperPI while I play or something. Nothing extra is running, and nothing is eating more resources than it should.

I ran HL2: Episode 1, and got the same problem. I took a few screenshots rapid-fire trying to catch the difference, and got it. One says 292FPS, the other, less than half a second apart and looking in the exact same place, shoes 24 FPS

On occasion I will load up CS:S and it will run perfectly, ranging from 100 to 160FPS with no jumpy-laggy feel to it.

The VGA temp is about 60C on load at the most, usually between 53C and 56C while playing CS (which doesnt seem bad at all...my X1600 used to go to 70C)

CPU temp is unknown, but the sink feels warm, not hot. If I were to guess I would say it is running about 55C while on load. It idles at 43C.

Memory is warm to the touch, not hot at all. LED lights on it act normally, flickering between the yellow and red rapidly while gaming, hovering in low-yellows and greens while idle.
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post #2 of 6
Well first, do you have all the dual-core patches and drivers installed? Second, why would you limit your FPS to 30? 30 FPS is basicly lag, 60+ is non-lag and 85+ is very smooth. Install all the AMD patches, the TSC Sync patches, and the Windows Dual-Core patch and see if that helps
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post #3 of 6
Thread Starter 
I didn't know there were patches...

I set it to 30 just to see if it was doing the same thing. It is easier to see what the numbers are when its not changing 160 times a second

Could you give me a link to somewhere I would find those patches? I'm both new to AMD and to dual-core. Been an Intel man all my life (Except my Duron800 which fricken pwns!)
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post #4 of 6
Thread Starter 
Ok I installed the "Dual-Core optimizer" from AMD, is that the right thing?

I ran the Video Stress Test and got 150FPS compared to the 47 it was getting before, but that might just be because its randomly working without a problem. It does work sometimes without spiking, so I am not sure if the optimizer did it...
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post #5 of 6
http://www.amd.com/us-en/Processors/..._13118,00.html

Yeah thats one of them, theres another one called TSC Sync and another one from Microsoft: http://support.microsoft.com/kb/896256
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250GB WD-Caviar 16M 3GB/s NEC ND-3550A Windows XP Pro SP2 17in. ŁĊĐ 
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post #6 of 6
You want the AMD X2 driver.

It's towards the bottom.
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