The fact that the Radeon HD 4890 has a GPU that can be clocked fairly high, is not a secret. MSI however is working in something rather special.
See typically the 4890 cards can be clocked at 900 MHz, 950 MHz at best really. However, MSI will be among a few AIBs making a high-end Radeon HD 4890 graphics card, with a 1.00 GHz core frequency. Fudzilla reported that the card has Hi-C CAPS, Solid State Chokes NCC PSF solid caps and of course non-reference cooler. The card should be called MSI R4890 Cyclone and we expect it to be quite an overclocker.
The new MSI HD 4890 will use Hi-C CAPS around the GPU which should enable it to have clean and stable power for the GPU, and it should imply that this one might be a very good overclocker. The rest of the known features include Solid State Chokes, also known as the anti buzz chokes, and NCC PSF solid caps.
The card will be cooled by MSI's well known SuperPipe cooler which uses 8mm heatpipes, and according to the picture which we managed to get, it will have four of these.