Originally posted by: regpfj
Originally posted by: aigomorla
it lets me clock my ram to about 800mhz+ so yeah.. it is kinda important if you like to overclock.
Personally I haven't found them necessary. I too have a 7800gtx. With stock cooling, which covers the ram, they'd overclock to ~480 MHz; 430 MHz is stock.
"When I put a dangerden maze4 on there with no ramsinks, they overclocked to 515. YMMV and all that, and I haven't tried with ramsinks, but I still get 35 MHz more with nothing on them than with the original cooler.