I went looking for a coolers for the 4890's and it appears a ZALMAN VF1000 for like $58 or... Scythe Mushasi for $50 are “supposable” compatible. I don't see them list on their sites, just some posts from those who tried. While the Thermalright T-RAD2 is saying non-compatible on their web-site list. I don't see many good choices for a 4890, other suggestions!

If you plan on spending and changing the cooler then just get a
4890 Vapor-X Toxic it $240 at Ewiz. I bet if you call them they might just give you the coupon and free shipping.
http://www.ewiz.com/detail.php?name=AT-489TX1G

You don't even need a $50 after market HSF. Just point a 120mm fan at it or get a slot fan, much cheaper and works almost as well in terms of lowering heat and lower noise.

Kompweird paraphrases other peoples work in his posts, they arent him comprehending anything. He has also said that he very forgets, he says a lot of silly child like things. People with OCD usually do they also lie a lot, does this sound familiar, also the need to take credit and get attention by mutating something he read into his new creation like monsanto or this sentence . It would be easier for him and us if he had some helpful reliable link to look at not this "look at me mommy I go peep pee" point of view, but that isnt what hes going for its attention of any kind. He spouts this baconnaise and then takes credit as if he built the item and knows its mind. All you rodeo cowboy know who you are and everyone just ignores you just like in real life.