I currently own a macbook pro, as below Model Name: MacBook Pro Model Identifier: MacBookPro3,1 Processor Name: Intel Core 2 Duo Processor Speed: 2.2 GHz Number Of Processors: 1 Total Number Of Cores: 2 L2 Cache (per processor): 4 MB Memory: 4 GB Bus Speed: 800 MHz Chipset Model: GeForce 8600M GT Type: Display Bus: PCIe PCIe Lane Width: x16 VRAM (Total): 128 MB Should I trade-in for a new model, with better graphic card? I don't really like the integrated battery, but the newer model is really tempting. I often leave my MBP running for 24Hrs, will the newer model be able to take the heat? will it affect the battery shelf-life? Thinking of getting the 13-inch: 2.26GHz. Please advise, your help is greatly appreciated.