[airspirit]

Nononono ... not 40% 3dmarks, hehe. That would be disgusting! I'm talking about 40% real use across the board on your core components (CPU speed, bus speeds, DDR latency, etc). Your processor speed will be 50% higher, assuming a speed of 2300/11.5x200, which should be readily attainable at around 1.8V. With the FSB at 200, you are increasing your bandwidth by 50% as well, which translates into about a 30-42% system speed increase. I'm assuming you're running at medium-low timings of 2-4-4-8 right now (typical stock), which would give you at 2-2-2-5 at DDR400 an latency decrease of about 30%. All told, these benefits translate into an overall system performance increase of around 40% or more. Unfortunately, many benchmarks only measure the capabilities of your system in narrow specialty ranges, so your 3dmarks will probably only increase into the 15K range. Overclock your GPU, and it will go higher. What you WILL notice, regardless of what the 3dmarks say, is that because you're using more and FASTER memory, games will run smoother, with a similar increase because of the processor boost. While it doesn't translate into much of a difference in 3dmarks, it will translate into a much bigger difference in real life use.

Edit: after looking at the amount and type of memory in your sig, think more along the lines of 60% overall increase.