AGP 8X vs 4X

Slava

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I feel stupid asking this, but I am a bit confused: I've read (in one of THG articles, I believe) that there is little real world/game performance difference between AGP 8x and 4x.

I bought Star Wars: Knights of the old Republic and noticed that my old 64Mb AGP-4X GeForce3 Ti-500 is running kinda slow at 1280x960 with Max detail and 2x AA + 2x anisotropy. So I figured it is probably time to get a new card since games are not getting any less demanding than KOTOR. Price was good (160-sh), so I got a 256Mb AGP 8x ASUS GeForce/FX-5700. (yes I know that there is no difference between 128 and 256 Mb cards, but the 128 version cost only 2 bucks less so I got the 256Mb version).

Now, my motherboard only supports AGP 4x and though the game runs much better at 1280x960 with Max detail and 4x AA + 4x anisotropy, still most of the time it gives me a maximum of about 32 fps and in some locations fps drops to about 15-16 which does not look smooth :eek:)

System:

- Win XP Pro SP-1
- Pentium 4/ 2.4 GHz OCed to 2.9GHz / 1.75V and running stable and cool (42C under load)
- ASUS GeForce/FX-5700, 256Mb OCed from default GPU clock of 425MHz to 445MHz and memory at 511MHz vs. 501MHz default running stable and cool (36C under load). OCing it any more creates an artifact or two every 10 minutes or so under heavy load.
- ASUS P4T-E i850 motherboard with OCed Bus of 120MHz
- 512Mb PC-800 RDRAM also overclocked and according to Sandra 2004 outperforming PC-3200 DDR

Anyway, here is the question: the game’s visual detail settings did not change much and I could get 15-25 fps without AA and with 2x anisotropy on my old GF3 Ti-500 (the rest of the settings are the same – shadows ON, V-Sync ON, etc.). Is my AGP 4x really holding me back now since the new card supports 8x? Would I get a noticeable performance boost if I changed the motherboard to AGP 8x one?

Problem is that I am kinda screwed since if I get a new board I would need to get new memory since at this point sticking with RDRAM does not seem like a viable solution . . .

Any comments are welcome. Thanks much.
 

Crashman

Polypheme
Former Staff
Nope, AGP8x won't help you at all, I'd try figuring out what exactly is wrong with your system.

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Slava

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Crashman,

Thanks for your reply. It is as I suspected: Switching to AGP 8x won't help, not in the next couple of game generations anyway :eek:)

Maybe you could help me troubleshoot my system for bottlenecks? I would much appreciate it.

I am not a novice, but, certainly I don't know everything. I have done quite a few things already though. Everything seems to check out. I am out of ideas.

Just stress-tested my PC: Been running under a moderate-to-heavy load for close to 20 hours now (including some 3+hours of heavy multitasking) without so much as a single hickup.

Here are some video benchmarks. Maybe they will tell you something. Maybe I am asking way too much of my video card.

- AquaMark3 (I recommend it, by the way. Awesome and designed for future generatins of games. Really stresses your system. On "Massive Overdraw" test I get about 6-7 fps under standard settings :eek:)

AquaMark3 Score: (standard settings): 24,186

- 3DMark03 Score about 3,190 but I may be wrong. Gotta double check.

- nVidia Dawn demo at 1600x1200 AA-2x Aniso-4x: no score but consistently runs at about 28 fps regardless of zoom.

- nVidia Dawn Ultra at 1024x718 with the same settings runs at about 15-20 fps depending on zoom.

- nVidia Dusk Ultra at 1280x960 PLAYS BETTER than nVidia Dawn demo giving over 30 fps (weird, huh? since nVida says that Dusk REQUIRES a 5950 Ultra CPU :eek:)

Any comments are, of course, very welcome. Thanks!
 

spitoon

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I'm just offering this as a means of comparison...I score over 23,XXX on Aquamark3 with this set up:

1.1GHz Celeron (o/c to 1.54GHz)(FSB @140MHz)
512MB PC133 Memory
Windows XP Pro
GeForce4 Ti4200 (o/c to 300 core/610 mem)

I would think you should be able to score higher, something may be amiss with your setup.
 

DCB_AU

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AGP will finish soon, so don't worry about 4X/8X.

PCI Express is the way to go - I think or maybe I've heard that before, ha ha.

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coylter

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OMG USE THE SEARCH BUTTON THERE ARE LIKE 1000 OTHER THREAD LIKE THIS :/

Athlon 2700xp+ (oc: 3200xp+ with 200fsb) , Radeon 9800pro (oc: 410/370) , 512mb pc3200 (3-3-3-2), Asus A7N8X-X
 

coolsquirtle

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ahh try V-sync off.

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never tried to go crazy when it comes to o/cing.
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