Reading the other 9550 thread and looking at the extremely high memory clocks it occured to me that the card was probably underperforming. I have purchased a sapphire radeon 9550 128bit with a passive cooler that had 256mb of memory. What I ask is if the extra 128mb of memory actually makes it perform better... The weirdest thing is that my 9550 was supplied with a PASSIVE cooler not an active one, i just switched to an active one by using the power from my motherboard. Does it make any difference? When overclocking, the highest memory clocks i can obtain is a dissapointing 208x2 Memory clock speed. The case has 2 suction fans, 1 next to the GPU (under) one above for the CPU and GPU.