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Upgraded to 4890 with minimal improvement

Last response: in Graphics & Displays
January 15, 2010 3:03:27 PM

Earlier this week i picked up a XFX HD 4890 to replace my EVGA 8800 GTS 512 G92. After playing around with it a bit it doesn't seem like there is much, if any, improvement. Some games like TF2 have seemed to taken a hit in performance, dipping down to 20-30fps. Crysis runs 30-high 40's on medium settings and no AA. The Witcher runs about the same on max details and no AA.

Any ideas on what could be the cause? Perhaps maybe a bottleneck somewhere? PSU not strong enough?

I didn't think this card would be running Crysis max or anything, but I was hoping for a bit better results then this.

CPU - AMD 7850 2.8 Kuma BE
4 gigs of GSkill 1066 Ram
1600x900 resolution
Antec Earthwatts 500w with 2 +12 rails running at 22amps
January 15, 2010 3:08:06 PM

what about ur pcie slot setting? set to 16x?
January 15, 2010 3:21:32 PM

You know, at this moment I cant 100% say for certain. I would assume that it is though.
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January 15, 2010 3:27:26 PM

Have you verified that you have the very latest ATI Drivers? The 4890 should be better than that, especially with that resolution. I guess another thing to check is to make sure you have as much power for that card as possible, so I would suggest trying to get as much of the system as you can on the opposite 12V rail from the GPU, and try to have ONLY the GPU on one 12V rail.
January 15, 2010 3:37:02 PM

have u removed all the software pertaining to NVIDIA? if not, remove ALL ATI drivers and Nvdia and then do a clean install
January 15, 2010 4:09:14 PM

So I skipped out the rest of the day of work to come home and get to the bottom of this :D 

CPUID says PCI-E is running in x16.

Everything Nvidia is gone. I used drive sweeper to remove everything and then went through the computer and deleted all folders and any other evidence.

At first i used the latest Catalyst drivers from AMD. Then tried the latest from Guru3D that contained some kind of hotfix for something. I'm going to switch back to the the official ones soon.

Ill try to reroute the power. I have no idea how to do that though so it may take me awhile to find a decent tutorial and figure it out.

Thanks for all the help so far.
January 15, 2010 4:16:01 PM

Routing your power comes down to knowing which connectors on your PSU come from which 12V Rail, and then trying to be creative. I guess since I have a modular supply I can do that easier, but with a non-modular supply you may not have too much of a choice...
January 15, 2010 5:09:48 PM

Yeah, I only have 3 PCI-E connections available. I do have 2 4pin to 6pin converters that I could try out though.
January 15, 2010 5:18:04 PM

I had upgraded from a highly OCed 8800GTS to a 4870 and i was really upset that I did not see much, if any improvement. Some games seems to run better on my OCed 8800. I did OC the 4870 and got some better performance, but the upgrade was pretty minimal. Since a 4890 is sort of a revamped 4870 with higher clocks, I would expect similar and this does not surprise me. If the game favors Nvidia cards, you will be even more upset.

I've been there and it's frustrating.
January 15, 2010 5:20:06 PM

I wouldn't worry about trying the 4 to 6 pin adapters. Have you run a benchmark of any kind? If not I would suggest your try 3dMark Vantage trial and see what your score looks like. If your score is fine in that, its gotta be some sort of setting or something with the games you are playing. If your score is lower than expected, then you may have a bad card, or some other problem.
January 15, 2010 5:28:52 PM

ATI says this about the power supply: "500 Watt or greater power supply with two 75W 6-pin PCI Express® power connectors recommended". Are you using two 6-pin connections?

I've got a OCed 4890 card in my system. I run in 1280x1024, though, so Crysis, etc. run very smooth on max settings for me.
January 15, 2010 8:23:48 PM

4890 OC'd to 910MHZ/4400MHZ works at 1920X1080 with very high settings & 2X AA at 26FPS avg according to inbuilt benchmark in crysis. YES , PSU matters also bottleneck can be due to the slot being PCI-X 2X or 1X. pls make sure the game has the latest patch as well i am sure the ati drivers are updated. try using FRAPS latest version inbuilt benchmark in games give more effective results.
January 16, 2010 12:38:26 PM

I actually ended up returning the 4890 last night. I just couldnt justify the $200 price tag for the very little increase that I got.

I will probably end up getting a new PSU and CPU for the cost of the card though. So at least when prices come down on newer cards I wont be paranoid about bottlenecks or anything.