http://www.notebookjournal.de/praxis/79/2
With current beta drivers, the X4500 is about 71% the speed of a 8400m GS compared to the X3100's 44% speed of the 8400m GS.
With plans to further increase the X4500s speed via drivers (the release driver even), the X4500 will be close to the performance of the 8400m GS if Intel's promise holds true.
Nevermind the fact that there is a pretty significant speed difference between a X9100 and T8300
Let's not forget both the speed and architectural differences between the T8300, X9100, and T9400.
Also, what drivers were being used for the GeForce GPUs? What were the power settings?
Where are the real world benchmarks? Not synthetic benchmarks and one of a game that nobody cares about?
Let's see the X4500 pushing some real games. The 8400M GS is perfectly capable of playing GRID, CoD4, UT3, Half-Life 2 EP2, Gears of War. So Let's see how the X4500 does with those. I know the 8400M GS does well with those because I've played all of those on my system.
But again, what drivers were being used for the GeForce 8400M GS? I know I've seen a substantial performance boost thanks to driver upgrades. Going from the 174.74 drivers to the 177.35 set just recently double my frame-rates in GRID and smoothed out areas in other games that had drops here and there.
This benchmark is no different than those released for the X3100. Show off the chipset with a couple of things tailor made for it so it looks good in reviews. Then when it comes time to perform in the real world, you see that it falls flat on its face.
The X4500 has already been beaten by other IGPs anyway. The Radeon 3200 IGP outperforms everything below the GeForce 8600M GS and performs nearly as well as it does.
Not to mention the 3200 has all of the features the GeForce 8 line does for video playback. Where the X4500 only has basic playback, no enhancement of any kind.
If the Radeon 3200 is combined with another dedicated ATI GPU, like the 3450, it can use a hybrid "Crossfire" mode and both GPUs will work to render the picture delivering even more performance.
Like I said before, if Apple wants to continue to shaft us with integrated graphics, they could at least have the decency to give us something with respectable performance. The GeForce 8000 series IGPs and Radeon 3200 IGP walk all over everything Intel currently has and will have for the foreseeable future. Relying on Intel GPUs automatically puts the MacBook in the same league as $500 Wal-Mart PCs when it comes to performance.
One last thing: Intel can promise all of the speed increases via drivers they want. It's not like nVidia and ATI stand still when it comes to this stuff. nVidia's reputation is based on their speed increases through drivers.