680最大只能到3GB?
是為什麼被限制?

另外我打算買非公版的680...

這是之前的謠言，實際上不是這樣。
不過Fudzilla這篇說的很接近了，大部份DX11測試小嬴，發熱和功耗也比較小。

功耗低是好事, 電價要漲了. 看起來可以入手不必再等後面的卡王, 就剩CUDA效能,

希望也是大躍進.

SP加了那麼多

希望F@H能夠沾到砂橋的邊

那個CUDA core數量其實算法不一樣，並不是GF110的效能x3，不過比較快是肯定的。

這樣感覺起來跟AMD的架構是殊途同歸?

就記憶體顆粒配置上和顯示卡的成本/售價/定位 的考量吧

GK104 Transistor Count and Exact Die-Size Revealed
Wednesday, March 14th 2012
GK104 Transistor Count and Exact Die-Size Revealed
A part of the reason why NVIDIA's performance-segment GK104 is gunning for the performance crown from AMD's Tahiti GPU could be hidden behind two of its key specifications: transistor count, and die-size. 3DCenter.org compiled these two specifications for the GK104 from reliable sources, which pin the transistor count at 3.54 billion, and die-area at 294 mm². This yields a transistor density of 12 million per mm², which is slightly higher than that of AMD Tahiti, slightly lower than that of AMD Pitcairn, and certainly higher than previous-generation chips from both AMD and NVIDIA. If GeForce GTX 680 does in fact end up competitive with AMD's Radeon HD 7900 series, it could serve as a tell-tale sign of NVIDIA's Kepler architecture being a more efficient one.

標顏色表示不同CUDA
 

筆電版GK107的評測

GT640M：384組CUDA, 16 ROP
GPU:625Mhz/Shader:1250Mhz/900Mhz等效1800Mhz(128bit DDR3 Memory)

文中性能相近的機器Alienware M14x
GT555M：144組CUDA, 24 ROP
GPU:590Mhz/Shader:1180Mhz/900Mhz等效1800Mhz(192bit DDR3 Memory)