I am planning on buying a new computer for Video editing amongst other things I would like to know if Adobe Premier pro cs4 is likely to crash or stall from only having 6GB Ram available when editing 1280 x 720 MP4 files and compiling png image sequences into animations( a couple of thousand images ).
Will having 6GB rather than 12GB mean that it will just take longer to render out to H264 or create a DVD or will it prevent me from rendering completly on occasion.
Computer spec is..
Motherboard Asus p6Tdeluxv2
Processor Intel i7 920, D0 SLBEJ S1366, Bloomfield, 2.66 GHz overclocked to 3.8 GHz
CPU cooler Thermalright Ultra-120 eXtreme 1366RT 120mm
Ram TR3X6G1600C8D -12GB (6x2GB) Corsair Dominator DDR3, PC3-12800 (1600), 240 Pin, Non-ECC Un buffered CAS 8, DHX, XMP
PSU 850W Corsair 850HX PSU
Graphics card 1GB ScanFX GTX 285
Hard drive 2 x 1TB Samsung HD103SJ Spinpoint F3, SATA 3Gb/s, 7200rpm, 32MB cache
Windows 7 64bit
You shouldn't have a problem with any crashes, etc. with that setup. I've edited HDV footage on our computer and it's much lower specs that the one you listed. I've also done TARGA image sequences (out of 3ds Max) that lasted 4-5 minutes without a problem. We were only using 4GB of RAM for a long time, and have now moved to 8 with Win 7, 64-bit. I also don't think CS4 will even take advantage of 12GB of RAM. Doubtful you'll see much difference until they come out with a 64-bit version of Premiere.
Just my two cents.
CS4 is purely 32 bit, but optimized to use more than 4 GB memory. Only PS Extended is 64 bits. The next version, CS5 is claimed to be 64 bit, at least for PR and AE. Then 12 GB is very handy, but at this moment I think your immediate gain will be more from a third disk than from the addition of 6 GB., if you are strapped for cash. Otherwise do both, go for an additional disk and the extra memory.