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Its indicative to say that cpu bottlnecking is apparent and real but scales very differently across both Amd and Intel platforms with each increase in clockspeed.
First of all, I never said that AMD's scale better than intel or vice versa. I just made a general argument. But since you brought this up, we can test this hypothesis by simple calculations done on the scores that you have posted from anandtech. For now, I am assuming that these scores are accurate but I have good reason to believe that the Rise Of Legend scores are unreliable and I will prove this later in my post.
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It was benched at high settings @ 1600x1200 on 2x X1900XT's in Crossfire:
Could you post a link to that page please? What aa setting are they using? I doubt it is 4xAA. You said that they used "high" settings but the Return of Legend table clearly states "balanced quality" which is probably less than 4xAA. I dont believe these are good settings to test CPU bottleneck in the first place. But anyway....
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The spread on The Amd chips from the 3800 X2 to the FX62 (lowest end to highest end) is 14fps, this scaling is relatively low. On the other hand the spread on the Core Duo when moving from a 6300 to a 6800 (lowest end to highest end) is 25fps. A very significant gain and almost double the scaling that Amd is capable of from lowest end dual core chip to highest end dual core chip.
That is very vague. Raw numbers tell you nothing and can lead to an incorrect analysis. We need to look at the percent change in clock speed across each platform and the accompanied percent improvement.
It is safe to assume that FX62 is ~45% (2.8 GHZ vs 2.0 GHZ plus the extra cache) faster than X2 3800. An FX 62 yields 30% and 51% gains in oblivion and ROL respectively which gives us (30/45)= .67 and (51/45) = 1.13 as the level of GPU bottleneck (or percent gain in FPS per percent gain in CPU clock speed). You average them out to get ~0.90
An X6800 is ~58% faster than an E6300 and the gains in oblivion and ROL are 46% and 77% which gives us (46/58) = .79 and (77/58) = 1.3. The average is ~1.05.
In other words C2D scales approximately 10% better than the AMD which I dont believe is a huge difference.
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If firing Squad had added an extra column with a Core X6800 in the table cheetah posted Im sure you would see the fps much highers than what the Fx62 offers
Just to clarify, firing squad did not make that table. I created that taking the results from firing squad's analysis. And if they had an x6800, instead of the 11% performance gain that I calculated it would have been 10% more i.e 12% which means nothing!
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Check out my own Fear results on my previous system with single core 3700 @ 2.8ghz and my current setup with core duo at 3.4ghz. Both systems running X1900 CF. I have provided both a low resolution (10x7) and a high resolution (19x12)
I have seen your results a number of times posted across this forum and no one is taking the facts away from you. We all agree that a better CPU improves minimum FPS but that is not exactly the point. What Brian and I are trying to say is that if someone wanted to improve their min FPS at 1920 x 1200 they are better off upgrading the GPU rather than the CPU since it would give you a lot greater bang for your buck. Obviouly the ideal case would be to upgrade both but most people dont have that kind of cash.
Like you, I have also performed analysis on FEAR using my setup and take a look at this graph that combines CPU and GPU scaling for FEAR's minimum FPS at 1920 x 1440.

It shows that if someone had a 1.93 GHZ AMD and a 7900 GT, moving to FX 62 will make absolutely no difference at all. Yet going SLI will drastically improve performance. I know an 8800 GTX cannot be compared to a 7900 GT but 1.93 GHZ ridiculously slow even for a 7900 GT and it does give you an idea of how CPU bottlenecking works.
I mentioned earlier that the Anandtech results for Rise of legend seem false to me. Here is why I believe so:
Through pure logic and then confirming it through extensive testing I have come to the conclusion that
The performace gained by upgrading a single hardware component can NEVER exceed the percent by which the component is upgraded. Any review site that tells you otherwise is either deliberately falsifying results or their results are just plain inaccurate. To prove this, I am posting my results from testing two games known to be CPU dependent. I tested them at 640 x 480 with a single 7900 GT for two CPU speeds, 1.4 GHZ and 1.93 GHZ. At these settings no one can deny their is no GPU bottleneck whatsoever.

You can see that even at these setting I never get over 96% performace boost. It just wont happen( Anyone that doubts this theory can test it out on their own). However the calculations that I did earlier in this post yielded as high as 130% for C2D performance gain in ROL and that too at 1600 x 1200. I believe that using FRAPS accounts for some of the discrepency but that is still quite unacceptable to me. On the other hand what Brian posted makes more sense and is consistent with logic. I hope this post will get my point across