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Choppy 4870

Last response: in Graphics & Displays
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February 14, 2009 2:31:19 AM

Hello,

I just got a new system yesterday:
CPU: Phenom 2 940 (3.0GHz quad core)
Mobo: Gigabyte GA-MA790X-UD4
GPU: Sapphire Radeon HD4870 1GB Toxic
RAM: A-DATA 4GB CL5
HDD: Samsung 500GB 16MB buffer Sata 2
PSU: Enermax Pro82+ 625W
OS: Vista x64

The system works fine, but when I run games I get "choppy frame rates", like the ground will move choppily every few seconds when I move.

This is like a bad re-run, I had a similar problem on my old system with it's GF 7600GS.
This is driving me insane.

I'm still using a CRT monitor (from 2003), an LG 700P.

The OS install is fresh, not even a day old, and I'm using the latest drivers from the AMD ATI site.

Any ideas?

More about : choppy 4870

February 14, 2009 3:06:06 AM

What Games?
What Resolution?
What is your AA setting?
When it "chops" is the HDD LED lighting up?
February 14, 2009 3:20:32 AM

Games: Halo PC, UT3, HL2, L4D, CoD5, FC2.

AA setting is 4x for the newer titles.
I don't think the HDD is active during chops.

I don't think L4D and UT3 chopped on me when I ran them on my older PC at 25-30fps.
This seems to be consistent with the way Halo PC started chopping after I got a new system 2 years ago, again, it ran at 25fps on my old 2003 build.

I'm starting to think it's this LG 700P CRT monitor... I'll hook up a crappy 1024x768 LCD I have lying around here and see what happens.
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February 14, 2009 4:12:52 AM

You are using FRAPS right?

Anyways, it doubt its the CRT, but i hope it is, because the problem would be much simpler to fix :D 
February 14, 2009 10:27:46 AM

Just tried it with and LCD (vga connector) and displays the same damn thing.

What the hell is this?

Let me explain this further, when I walk around and look at the ground, every few seconds it chops, like it's losing a few frames and fast forwards to them... something like that.
How the hell do I get the same damn thing on two totally different PCs is beyond me.
February 14, 2009 3:27:58 PM

Is this for ONLINE gaming or offline?
February 14, 2009 3:49:51 PM

Both offline and online.

3DMark05 results:
February 18, 2009 9:49:30 AM

3DMark06 score: 14808
!