Like most people on this forum, I am looking forward to buying a new Penryn (Harpertown) mac pro. I think its going to come out this week. BUT... I think there will be new Nehalem Mac Pros coming out in the second half of 2008. The people who are waiting to buy the Nehalem Mac Pro will have a much more powerful computer than the Harpertown Mac Pro. Nehalem is part of Intel’s tick-tock strategy of bringing out processors. Penryn (Harpertown) is a shrink derivative of the Core 2 Duo. Nehalem has a whole new microarchitecture. Nehalem will not rely on FD-Dimms which are prone to latency problems. Instead Nehalem will use DDR3 chips. Nehalem will have three times the peak memory bandwidth of Penryn (Harpertown) processors. I think there is a good chance that the next Mac Pro will have either an 8800GT or a HD3870 video card as bto. BUT... The truly big boys are not coming out until 2008. ATI may be bringing out a new gpu in 2008 called the R680. Rumor has it that the R680 is two RV670 chips on a single die and will act as crossfire on a single board. It may be faster than nVidia’s 8800 Ultra! nVidia will not be left behind. In December nVidia will launch a new revision of the 8800GTS 640MB video card. It has more shaders than the current 8800GTS 640MB card and may be faster than the 8800GTX. In January nVidia is expected to launch a new card codenamed D8E which will have two 8800GT GPUS (or more appropiately G92s) on two PCBs. In mid-2008, nVidia is expected to introduce a whole new video card codenamed D9E (G100). Not much is known about it except that it is a single chip gpu. Nehalem Mac Pro: Much more powerful cpu and much more powerful gpu than the Harpertown Mac Pro.