Amen Ken. I've had my MX for a year now and believe me, I've tweaked and modded the guano out of it. That was the first thing I did was to put a recycled 486 CPU fan onto my MX too. It helped a little. Then I took the heatsink off, cleaned the gunk off and used Arctic Silver thermal paste. That helped too. Then I tried a 40mm X 20mm high output Sunon fan. That helped a bit more too. The sinks on the vid RAM only was good for 1-2 MHz. But, installing a lapped Blue Orb on my MX card helped the most of all my mods. I use a slot fan next to my vid card too. They don't flow but a fraction of what they claim, but those slot fans do help move heat away from the vid card.