I had same problem when tried my old zalman vga waterblock. I even left that "red cooling sandwitch" to cool mem and vrm's but vrm temps get 100C and mem got pretty hot too. I had 120mm fan but didn't help much. So I went back to standard coolers.
Now I have 2 MCW60's ready to install, I'm waiting another pump, rad, mosfet heatsinks and 32(!) ramsinks to arrive. Hopefully I get my temps down!
btw, 1950pro had problems with vrm temps even with standard cooler and my VRM temps hit about 110C. I used that card about 8 months without problems. Althought those vrm's were colored white when I checked before I sold it!
so i guess its typical of the vrms to get this hot...
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