Will coprocessors be back in our computers in the future?

Some our reader will remember the time when coprocessor were present to help the main CPU in some specific tasks as well as to boost the overall computer performance.
Apple has been using co-processor with 68xxxCPU, externally at the beginning before integrating them directly into the CPU die.
Today, such units are directly integrated into CPU; but the era of external coprocessors could be back.

The company Clearspeed will propose a PCI-express-based daughter card featuring 2 chips specialized/dedicated to 64bits floating point computing (availability Q3 2005). Together, those chips will have a computing capacity of 50 GFlops. If the motherboard includes an additional PCIexpress slot, then one could install 2 of such a card, and end up with a theoretical additional raw computing capacity of 100GFlops.
In addition, those chips are clocked at 250MHz! so such computing power is achieved due to the architecture of the chips which includes 96cores.
Finally, it is possible to add to this card one DDR2 RAM module per chips.
The price of this card is still not known.
Knowing that our G5 or Xserve will soon move to Intel processor, it would be nice to be able to add such cards in our computers.