You know what's terribly demanding? Java.
The idea is that we post our specs and stuff and compare where/if we get lag and so... See if it might be Java's fault (of course, Java sucks, but does it make some lag more than others?), etc.
Specs:
CPU: Intel i5 3570k (3.5GHz, 4 cores)
GPU: Evga GeForce GTRX 660 TI
RAM: 8GB DDR3
Settings:
All maxed out.
Effects rendered; vertical sync enabled;
16x AA; high graphics settings;
1080p resolution (1920x1080)
Points of lag found so far:
Fihurrdurrsturm Citadel, various areas. I find that on D26, when taking the right path, I experience the most lag I have ever experienced on this computer in SK. Other places I find lag in include the rooms with switches that are on the end of both D26 paths (yes, they aren't identical, I know), the final battle of D27 and more within the citadel.
As for IMF, I don't think I've gotten any lag, really. That is quite strange as IMF tends to be more demanding. I will however say that I have hardly tested the area enough to properly judge.
Lastly, Shadow Lairs are indeed heavy. I have actually run what might be the worst of them, SL IMF here but it was quite a while ago so I am unable to say what settings I used then or how much lag I experienced.
'Nuff about me though, where do you lag?
I.5 is VERY good for gamers you shouldn't have a problem about it.
I honestly have a laptop (now crashed XD) with an awesome graphics card but a horrible cpu (intel centrino dual core).
I have another laptop with an I.4 (1.66 ghz dual core?) but a bad graphics card XD.
I'm wondering if I can bring the graphics card, from the laptop that crashed, to replace the bad graphics card on my laptop with a reasonable core. Can you help me? And btw I lagg at Snow areas (snow ruining everything!) and places with a lot of enemies.