Good Point. I talked to the Dell guys, they didn't mention that by upgrading I voided my warranty. They just gave me all these suggestions for upgrading.
So, Bigger Fan? Clean you the Fan/HeatSink on the Case + CPU.
Thanks,
If it wasn't clear, my GPU is fine in temp. I watched it last night stay at 29C while playing leightweight games (etc: Minecraft, Global Ops etc)