4890 - FPS problem

[kidd101]

I recently build new i7 computer (about 4 months ago) and it was running smooth, though i hardly used it.
Now that I have some time, I decided to install games such as cod4, et, wolfenstein, crysis, etc. What I noticed while playing et and cod4 is it drops fps from 125 to 20 every 15 or so seconds. I tried almost everything I could think of, reinstalling the game, using default game n bios cfg, n so on. Is there something wrong with the computer or did I screw up while assembling the parts?

system spec:
i7 920 - 2.66 ghz
ati radeon 4890 (gigabyte)
6 gb ocz platinum ddr3 (3x2gb)
vista x64 sp2 - home
GA-EX58-UD4P
corsair 750 watt
1x600gb sata2 wg

I would think the game should run smoothly on this rig.

thank you,
Raj

 

[Maziar]

You have a very good rig and it must not have any problems with COD4,have you tried patching the game ? also how is your FPS in other games ? also make sure you have the latest VGA driver installed

 

[kidd101]

I have everything up to date, including windows updates. I also tried the defult catalyst cfg and modified it for performence, but none of them help.

 

[hundredislandsboy]

CoD4 offline or online. It could be lag (high ping) if the frames become choppy and nothing is wrong with your system.

To test your videocard, try 3DMark Vantage and Furmark.

 

[Deathgod121]

It could be that your system is getting to hot, that happens to my pc aswell so it could be that it is to hot maybe position it in a more spacious area to getter air flow. or add some more fans or type of cooling.

 

[jay2tall]

Turn on VSync in COD4. It is much smoother and the FPS don't jump around. It will lock the FPS at the refresh rate of your monitor, usually 60hz = 60 FPS.

 

[kidd101]

I tried a different graphic card, 4850 from a friend, and the problem was still there. When I turned on vsync and the fps stayed at 75 for a minute then started jumping around (avg 2-250 fps cod4 online tdm).

I ran some tests on 3dmark vantage on 4850 and here are the results:
CPU Score: 9915
Graphics Score: 8944
I'll try it out on 4890 when I get it back.

and I don't think heating is the problem. the room temp is below 20'c and I have the sniper case.
temps:
4850 - idl temp: 79'c at 27% fan speed (auto)
i7- temp ('c): 35, 31, 34, 30 (from real temp 3.0)
tj max: 65, 69, 66, 70

 

[xbonez]

@kidd: idle temperature at 79 deg cel is kinda high. its probably going up to 90 or more on load. that might be the problem.

my 4890 (sapphire, stock cooler) which I have OC'ed plenty idles at 43, and on a 15min Furmark GPU stress does not cross 71 degrees.

 

[kidd101]

I thought 80'c is normal for 4850 - the guy even called visiontek to make sure if its normal. also i forgot to mention for the 3dmark, it was done under 1280x768 resolution.
I'll def going to test furmark and 3dmark on my 4890.

 

[xbonez]

hmm, maybe the 4850 runs hotter than the 4890. i've had no experience with the 4850 so I can't be sure.

 

[Deathgod121]

I got the 4890 and it runs perfectly with no problems so far? it runs at about 45 Degrees