I just built a new computer. I installed 4 identical dvd burners with SATA connections to the motherboard. My cpu is a intel core duo e6600. I'm using nero to burn one ISO img on all four drives at once. I've had limited success. One drive always seems to fail, it's the same one so it might be faulty. But I'm not sure. My real major problem is that it's taking about 50 minutes to write the three successful discs. I can write one at a time in less then 10 minutes! The whole point of spending the money on this was to increase my productivity. I've been thinking about the problem for a while. I've noticed the buffer levels in nero burning rom shift back and forth between two of the burners at a time. I have two 1 gig ram cards but I'm not taking advantage of the dual channel capability of my gigabyte motherboard only cause i noticed my encoding times were faster when running them side-by-side. Is this the problem? I thought the drives would be able to write just as fast together as when I burn using just one? Was I wrong? Maybe I need to configure something to make them burn equally well? Any advice would be appreciated. Maybe someone knows what's going on here.