I upgraded my RAM from 2GB (4x512mb) to 4GB (2x2GB). It worked flawlessly and I turned on “Memory Remap” because I was using Windows 7 64 bit. The only issue I had was the water cooling pipes got in the way and still not too keen stressing them but it will have to do for now.
I put the sticks in the second slot so there was slightly less stress put on the tubing / RAM stick. It’s worth noting that the old sticks of RAM did not have this problem and it’s caused by the tall heat sinks on the DHX RAM. I went for them because of their timings (CL4) where as XMMS (CL5) are not have this tall heat sink.
I did try 5GB (2x2GB & 2x521mb) but it BSOD’d as soon as Windows booted. I did not try further as I had planned my old sticks to go into a new build. I only tried the Patriot RAM and not the Corsair pair.
I’m using a matched pair Corsair TWIN2X4096-6400C4DHX.
Upgrading from 2GB to 4GB has caused my Creative X-FI sound card problems. It has hissing/crackling sound which is constant when sound comes out of the speakers. Doing some searches I have found some people have had this problem because of the 4GB RAM where as some others have it working with 4GB. I narrowed down the problem between the nForce nVidia chipset, Creative drivers or Windows itself but have not found a fix. My work around at the moment is using the on board sound card which doesn’t support my surround sound speakers very well. Maybe a fresh install with the 4GB will cure it.
In terms of performance I see RAM usage around 50% with normal desktop apps and Eve-Online running in window mode. Before with 2GB the RAM would be around 80%. I have no other real benchmark to go by.