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Strange performance levels? (HD 6850)

post #1 of 13
Thread Starter 
Greetings!

I recently just built a new rig, and had tested out (and sold with my old computer) an EVGA Superclocked 768MB GTX 460 with it before purchasing my HD 6850 to finalize the build. I had read the HD 6850 was not only a better card, but I wanted the extra RAM as well, so it seemed a natural choice to remedy a sold 460.

The Rig:
ASRock Extreme4 MoBo
i5-2500k
Gigabyte Extreme Overclock (820MHz/4200MHz) 1GB HD 6850
Seagate 500GB Sata3
4GB G-Skill 1600Mhz 7-8-7-24 DDR3


Both the 460 and 6850 run Starcraft 2 maxed with 60 FPS solid @1680x1050.

The 6850 runs Burnout Paradise consistently around 35-40 FPS when maxed @1680x1050 (forgot to get a bench of the 460). Easily Playable, though the 460 felt slightly smoother.

the 6850 runs BF:BC2 consistently around 45-60 FPS (map dependent) maxed out @1680x1050, which is similar/slightly lower than the 460, which averaged 50-60), and is overall pretty smooth.

Unfortunately, A few of my other games feel more sluggish with the 6850, or worse. For instance, games like Killing Floor and CS:S maxed out jump and stutter anywhere from 20 FPS to 60 FPS @1680x1050, depending on the amount of action or certain lightings. The skips and framerate lag make it very unenjoyable and difficult to play. Maybe its the game engines? When i lower AA and filterings down by 1 setting, everything is perfect @ 60FPS solid (both games). SO strange.

The 460 was fine at max settings. Correct my if I am wrong, but BOTH cards should run games like Killing Floor and CS:S maxed out (AA and everything) without breaking a sweat at these resolutions, ESPECIALLY considering my rig. Also, The 460 should not be outperforming the 6850, right??

Also, League of Legends has some frame rate issues not encountered with the 460...though I do believe it is possibly programming/software issues on their end rather than hardware. It holds 60 FPS except for when these issues pop up, which is very random and inconsistent.

The issues shared seems similar though. The card seems to try and lock itself at 30FPS (vert sync??) and jutters and skips around 30 to 60 fps a lot during intense action. Why is it doing this?

Overall, are these the performance results I should be expecting with this 6850? All my other hardware was tested with the 460, so I know it is all fine.

Is it possibly bad drivers? I'm using 11.5

Any input would be greatly appreciated!!! Thanks!!
Edited by Armenix - 5/25/11 at 2:16am
post #2 of 13
try 11.4

11.5 did not worked well for me :'(

btw ur psu ??
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Kingston V300 120 GB Seagate 500gb+250gb  LG CM hyper N620 
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post #3 of 13
Did you reinstall Windows between switching cards? You could be having problems with conflicting drivers. Even if you uninstalled the nVidia drivers, there's a chance there are registry changes left behind that can affect your performance. People will recommend Driver Sweeper, but it's been known to cause problems with AMD drivers. The only surefire way, unfortunately, to switch from nVidia to AMD (or vice versa) without driver issues is a reformat.
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post #4 of 13
Some games just favor the other brand. There are few games that ati will just run like dump, it doesnt mean its broken.
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post #5 of 13
You should be running burnout at 60fps with AA and with the other settings maxed. It's more CPU dependant.

I would try to use driver sweeper and reinstall your drivers. Something is wrong with the performance you're getting.
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post #6 of 13
Thread Starter 
I did a complete reformat and reinstall of Windows 7 x64 when I changed out the card, so driver issues, aside from them just being bad drivers themselves or just some random poor installation, shouldn't be an issue.

I will try to reinstall my drivers anyway and see if that provides any improvement.

FYI, I have the most up-to-date BIOS on my mobo as well, and nothing is overclocked, nor did I overclock anything with my 460.

My PSU is an Antec 550W and ran the 460 great.

Also, I did turn up everything to "Quality" in CCC, could that cause any issues?

Thanks for all the replies so far! I just want to figure this out ASAP so I know whether or not to RMA the card.
Edited by Armenix - 5/25/11 at 1:34pm
post #7 of 13
Thread Starter 
Quote:
Originally Posted by Horsemama1956 View Post
You should be running burnout at 60fps with AA and with the other settings maxed. It's more CPU dependant.

I would try to use driver sweeper and reinstall your drivers. Something is wrong with the performance you're getting.
See, i figured as much too. Is it at all possible the processor is in fact not pulling its weight? When I look at its load, it doesn't seem to be maxed out and has some headroom....

I will try and get some screenshots of CPU/GPU usage late tonight or tomorrow if this helps, I will be away for most of the evening unfortunately.
post #8 of 13
Just checking, what do you have set on "Anti-Aliasing Mode"? You mention you set everything to quality, does this mean you set this to "Super-sample"?

If so there's your culprit, turn it down to Adaptive (Better) or Multi-sample (Worse).

Oh also, what's your filter setting? With a 6850 you don't want to use Edge-Detect, leave it at Standard.


Those are the CCC settings that might be lowering your performance.


Also, I really doubt your CPU is bottlenecking anything.

Quote:
The issues shared seems similar though. The card seems to try and lock itself at 30FPS (vert sync??) and jutters and skips around 30 to 60 fps a lot during intense action. Why is it doing this?
That's common Vsync behaviour when you don't use Triple Buffering. FPS falls below 60, and to sync it has to go down to the next divider (in your case 30).


Anyways, just check the CCC settings before trying to reinstall drivers or anything.
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Dustbox
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2xSeagate 7200.12 500GB (RAID0) + 7200.12 1TB +... Prolimatech Megahalems + 2xScythe Gentle Typhoo... Windows 7 Professional x64 Dell U2311H 
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post #9 of 13
Thread Starter 
Casjo,

Your recommendation appears to have fixed some of the problems, if not all of them, just gotta run through some more testing. ^_^ Are these drivers, and thus the options available, meant for a wide range of cards? I guess I just maxed them out expecting them to be more card-specific.

I've included a picture of my settings. Do you feel they are the most optimal for the card? (I enabled triple buffering for v-sync as well, though its not on the pic).



Thank you for your help!
Edited by Armenix - 5/25/11 at 11:14pm
post #10 of 13
Yeah, those settings look good. Perhaps set Tessellation to "Use application settings".

And if you want to have different settings profiles for each game, you can try url=http://www.radeonpro.info/en-US/, it's pretty useful.
Dustbox
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Dustbox
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Hard DriveCoolingOSMonitor
2xSeagate 7200.12 500GB (RAID0) + 7200.12 1TB +... Prolimatech Megahalems + 2xScythe Gentle Typhoo... Windows 7 Professional x64 Dell U2311H 
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