Were the systems using a 6

#172057
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Were the systems using a 64bit or 32bit OS? Having 4GB of RAM on a 32bit OS is wasteful as the OS will not be able to make full use of it for a start due to memory addressing limitations. Applications will only use a maximum of 2GB anyway on a 32bit system unless you forcibly enable PAE in the boot.ini files to extend the range to 3GB, but this is not 100% effective at any cost nor does it make that much of a difference (in fact it can make things slower depending on configuration of the system itself).

The other question is the drivers used on the 2 systems. Earlier nVidia drivers under Vista were notoriously flaky and freezing up issues were common with them. The larger OEM system builders do not tend to use later drivers and stay a few versions behind. This could be the problem. Another reason could be the power supply output. High end machines nowadays require significantly more power than machines of even a year or so ago. Even though a PSU could be rated by the manufacturer as being high output, the actual outputted clean power to the components could be significantly less and cause system instability (especially if the 12v power rails are not seperate or are low in number).

My current editing system is VERY high spec (liquid cooled QX6850, 8GB RAM, ATI Radeon HD 3870XT, 2.3TB internal storage + 2TB NAS via Gbit/Ethernet, 1000W PSU, Vista Ultimate x64) and have had no issues with locking up or freezing with it over the past month I have had it under the desk working away regardless of what I throw at it.

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