MSI just announced their two customized Hawaii GPUs. One of the two new boards will be based on the R9 290 and the other based on the R9 290X. The design is based around the Twin Frozr IV Advanced two-fan model found on previous cards.
The specifications of the 290X version include three different modes: OC, Gaming and Silent. The Silent mode will run at 1000 MHz which is the same clock speed as the reference models were set at. In Gaming mode the card will run at 1030 MHz and in OC mode it will clock at 1040 MHz. Obviously there will be some slight noise level variances between them but I am pretty sure that the difference between Gaming and OC mode is going to be negligible.
The R9 290 version has the same three settings, but the clock speeds are 947 MHz, 977 MHz and 1007 MHz respectively.
As a final note: MSI's press release claims, "Available Now". It does not appear to be available on either Amazon or Newegg but NCIX claims that it is estimated to arrive February 26th, 2014 for $700. I seriously hope that there are a few typoes… maybe they meant December 26? Maybe they meant not a more-than-$100 premium?
It is, unfortunately, still a wait and see game with these custom AIBs.