optimal hardware for maxima



1. In reply to my original question on optimal hardware for Maxima, Stavros Macrakis has suggested that augmenting hardware is unlikely to lead to better results but suggests that a 50% improvement is possible with better hardware. I am planning to request the Indian government, I work in India, to assist me to set up a home workstation (for research purposes) with the following configuration: 
1.AMD Phenom II X4 940 3.0GHz 6MB L3 Cache Socket AM2+ 125W Quad-Core Black Edition Processor
2.ASUS M3A79-T Deluxe Motherboard
3.CORSAIR TWIN2X4096-6400C4DHX: 2 units i.e. 8GB, in all 4 sticks of 2 GB RAM each. 
4.Western Digital VelociRaptor WD3000GLFS 300GB 10000 RPM 16MB Cache SATA 3.0Gb/s Hard Drive
I would like your opinions on whether the new configuration would make some difference.
2. Stavros Macrakis has suggested that "it seems that the basic problem is that the solve/algsys algorithm is far from optimal". I am not a programmer but is there a place where i can report this?
3. Jaime Villate has suggested that i must compile Maxima from source code. I tried compiling Maxima from instructions available on https://help.ubuntu.com/community/Maxima
But I could not make much headway. If Jaime Villate can send me the shell script that he mentions, i will definitely have a go at it. 
4. As far as 64 bit is concerned, I was given to understand that 64 bit operating systems starts making a difference only when, one uses more than 4 GB RAM. In this light I installed the 32 bit linux server kernel provided in ubuntu 8.10 which recognises 3.8 GB of my 4 GB RAM. My ASUS M2A-VM motherboard has a problem running 8 GB of RAM so I am stuck with a 32 bit operating system unless it is the case that a 64 bit operating system is capable of outperforming a 32 bit one even when 4 GB RAM or less is used. In this case too, would'nt a hardware upgrade help matters?
c. saratchand