View Full Version : TF2 - Low end iMac

06-17-2010, 09:52 PM
I'm having a number of difficulties with Team Fortress, and it runs quite badly. Pretty much any suggestions would help seeing as how I've tried lowering the specs to pretty much nothing and it still runs like a slideshow, I get no sound and it loads very slowly.

OS X Leopard 10.5.8

Model Name: iMac
Model Identifier: iMac8,1
Processor Name: Intel Core 2 Duo
Processor Speed: 2.4 GHz
Number Of Processors: 1
Total Number Of Cores: 2
L2 Cache: 6 MB
Memory: 4 GB
Bus Speed: 1.07 GHz
Boot ROM Version: IM81.00C1.B00
SMC Version (system): 1.29f1

Chipset Model: ATI Radeon HD 2400
Type: Display
Bus: PCIe
PCIe Lane Width: x16
VRAM (Total): 128 MB
Vendor: ATI (0x1002)
Device ID: 0x94c8
Revision ID: 0x0000
ROM Revision: 113-B2250H-259
EFI Driver Version: 01.00.259
Resolution: 1680 x 1050
Depth: 32-Bit Color
Core Image: Hardware Accelerated
Main Display: Yes
Mirror: Off
Online: Yes
Quartz Extreme: Supported
Built-In: Yes

06-17-2010, 09:55 PM
make sure MSAA is off.

10.6 will run noticeably better.

06-17-2010, 10:03 PM
Anti aliasing is of course off D:

Any options besides upgrading?

06-17-2010, 10:19 PM
Don't get 10.6.4. Instead up updating all the way to 4, stick with 3... 4 is a total nightmare. 10.6.3 will probably add 15 FPS easily

06-17-2010, 10:53 PM
That iMac has ATI graphics, the data I have is not showing a perf problem with 10.6.4 on ATI. Just an FYI.

06-17-2010, 10:55 PM
make sure MSAA is off.

10.6 will run noticeably better.

what is MSAA and how do i turn it off?

06-17-2010, 10:57 PM
That iMac has ATI graphics, the data I have is not showing a perf problem with 10.6.4 on ATI. Just an FYI.
Do you have information regarding the 9400M or Nvidia GPUs in general? I'm seeing a -20% decrease in fps in TF2 and Portal after the update. No change on my Mac Pro radeon 4870, indeed.

06-17-2010, 10:58 PM
Options, Video, Advanced... it's on the lower left "Multisampling" or "Antialiasing'

06-17-2010, 11:18 PM
This may help. It's certainly helped for my MBP's performance


Use the morefps config, just change mat_bumpmap 0 to mat_bumpmap 1

But wait a moment, i'll run a bench to show you the results, and a few screenies as well.

06-17-2010, 11:33 PM
For reference (from Mangr0v3's "Community Benchmarking (http://forums.steampowered.com/forums/showthread.php?p=15468749)" thread.:

My results:

iMac 7,1. Intel Core 2 Duo 2.1 GHz, ATi Mobility Radeon 2600 Pro, 1GiB DDR2 RAM @ 666 MHz, Mac OS X Snow Leopard 10.6.3

Low(Multicore): 248.548 seconds, 37.82 fps (26.44 ms/1) 3.547 fps variability
Medium: 298.551 seconds, 31.48 fps (31.76 ms/1) 5.896 fps variability
High: Aborted, due to Demo 1's results.

High included 16xAF & 8xMSAA. However, there is a bug preventing 16xAF actually applying. Tests *may* be inaccurate for High. The crash experienced on the High run locked up the machine completely. I will try a second run If time allows.

Now with the config, I get an average of 41 fps with 10 fps variability. Not bad at all. Quality's not that bad either, for example:

<screenshots uploading>

The unfortunate fact is that stutters still occur. Haven't been able to alleviate the long load times, either.

Also, for even more frames, you can use this low-poly mod pack (http://www.fpsbanana.com/skins/78349). It replaces the playermodels and viewmodels with much lower poly versions. I can bench those as well upon request.