First of One wrote:
Just to be clear, the 300 MHz memory clock you saw was in 3D, right? Most
nVidia cards since the FX5800 throttle back under 2D to conserve power. You
can confirm this by running Rivatuner's real-time strip charts.


The OP couldn't even be bothered to run any benchmarks, he does not know
and seemingly does not care that his card might just be a-ok.

OP if that ram really is clocked slower, you can easily increase it.
Sadly, it is a process that involves a minimum of hand-wringing, so you
might be disappointed.