I'm upgrading my DAW and the first decision I have to make is processor. For the same $190, there is a slower Quad Core and a faster Dual Core. #1. Intel Core 2 Duo E8500 3.16 GHz with FSB 1333 MHz and 6MB L2 cache http://www.newegg.com/Product/Product.aspx?Item=N82E16819115036 #2. Intel Core 2 Quad Q6600 2.40 GHz with FSB 1066 MHz and 8MB L2 cache http://www.newegg.com/Product/Product.aspx?Item=N82E16819115017 Mostly what I do right now is rock music. I record in Windows XP using Cubase SX. A typical song will have 6-8 tracks of audio with minimal processing. I run keyboards as VSTs, usually only 1 or 2 per song. And for drums, I use EZdrummer (which is the main resource hog). My current setup: Soundcard: Presonus Firebox firewire interface OS: Windows XP Pro Processor: Intel Pentium 4 2.8 GHz FSB 533 MHz with L2 cache of 512kB Motherboard: ASUS P4C800-E deluxe with Intel 875P chipset. Has built-in ethernet and firewire. Memory: 1 GB of DDR 400 running underclocked at 333 MHz Hard Drive: Seagate Barracuda 250GB SATA 7200rpm Where I most notice the lack of performance is with the use of EZdrummer while multiple audio track are playing. I basically have to freeze the drums to an audio track to be able to keep recording. Also, burning down to a WAV file sometimes gives me pops and clicks with more than 8 audio tracks. So, would a quad core processor be beneficial, even though it has a lower overall speed than the duo core? I'm guessing that quad core is the way to go, as multiple VSTs might be distributed to different cores. For example, cubase might run on one core, while the EZdrummer VST could run on another core, and the remaining VSTs be distributed. I also want the best system for the future, so if quad core is going to be utilized more by recording software, I would like to be on-board.