agent_x007 wrote on 2025-06-14, 18:23:
Limited by GPU ?
They are not. 7600 GS @ GT scores on Core 2 platform (and yes, it's AGP version) :
Note : If you have trouble with games/tests with DX10 cards under WinXP, try 258.96 driver (with max. supported OpenGL at v3.3).
Fun benchmarks...
Perhaps this whole discussion on what's the bottleneck does not make much sense at all, because it is not that simple and is not as binary. Add better GPU and you get better performance. Replace CPU/platform and you get better performance. Replace both and you get hugely better performance. There are no "perfect" combinations and ones which make no sense at all are only at the very extremes, like trying to pair pentium2 with HD3850.
Basically if you want to push specific platform as far as possible it makes sense to use as fast GPU as possible, if you want to get as much as you can from specific GPU - using as fast platform/CPU as possible makes sense. If you want to run games with limited budget - certain mix of two, usually heavily favoring GPU, will work the best. I am trying to get as much as possible from specific platform here...
On top of that - everything depends on specific applications a lot.
What i was referring to there is that dropping CPU frequency while keeping the same CPU/platform does not significantly affect scores in 3dmark with the same GPU.
As for stuff other than 3dmark... yes, at this point, after i've experimented some more, i am quite certain that 7600GT is more than enough here. Unless i try to do something silly like running stuff at 1920x1080.
agent_x007 wrote on 2025-06-14, 21:20:I get that when using way faster GPUs you can still see an increase in performance score (ie. "scaling"), BUT there is a point w […]
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I get that when using way faster GPUs you can still see an increase in performance score (ie. "scaling"), BUT there is a point where Athlon XP 3200+ or Athlon64 3400+ are simply "not good enough".
That point is reached when you see a clearly higher GPU performance on faster platform.
The likeliness of this issue appearing in actual game though is directly linked to how much performance was left on the table between two platforms (the bigger the gap, the higher the chances), AND in which test(s) it was seen.
In our case for 3DMark 03, I got 2x performance uplift on of DX7 test of 3DMark 03 (wings of fury), and almost 2x in Pixel Shader 2.0 feature test (from using Core 2 vs. Athlon XP).
This suggest older games can benefit most from this (DX7), and some complicated pixel shader ones (but this case is limited to exact or very similar shader used by 3DMark team).
Keep in mind that those "performance uplift" happens at framerates which are completely useless for anything practical. This is recurring theme with CPU performance in games, old or new. You see 200FPS vs 300FPS and it is seemingly a huge difference, but in practice this means no difference at all because FPS will be limited by vsync, probably at 60-75 for this old games, and that huge numbers along with CPU limitations will never be reached.
So no, older (DX7) games will not benefit from better CPU at all.
This is actually why i completely stopped following and am no longer interested in reviews of modern CPUs for modern games - reviewers run stuff at silly, useless FPS and then say that 300 vs 350 is "a huge difference and this CPU is absolutely better". I do understand where they are coming from with this, but... it is completely pointless.
If you look at benchmarks which run closer to framerates which will actually be useful, like troll's lair or mother nature from 03, you see much, much smaller difference. And yes, i do understand that this are average framerates...
agent_x007 wrote on 2025-06-14, 21:20:
Note : Throwing an even faster graphics card at the tests mentioned above may result in even more issues.
GPU being starved out due to CPU/platform speed is very bad (especially on .1% metric), and raising AA level or increasing resolution will not help in getting playability back (in extreme cases, only limiting/capping FPS manually can help).
Please, just keep those things in mind when you encounter issues on fastest GPUs in slower platforms.
This issues can exist. Mainly when drivers are too new and/or simply garbage. This usually the case with using too new cards, not too powerful ones. So older high-end ones would work well while newer, even slower ones may have issues.
GF7 on S462 is definitely not even close to this though, this things were totally used in combination even back then....