Just read Hans' post here:
http://www.amdzone.com/phpbb3/viewto...rt=875#p185515Note that the way Intel implements 256 bit AVX is somewhat of a trick to
avoid bloating up the core to much. They actually used a 128 bit unit which
runs at double the clock speed because they "hyper-pipelined" it .
The FP/SSE/AVX area on the Sandy Bridge die is only slightly greater as
the FP/SSE unit on Westmere. It does have consequences for the power
consumption however and Sandy Bridge will be about as large a single
Bulldozer module anyway.
It has to be hyper pipelined, because the FPU is nearly unchanged from Westmere's but - according to intel - it should be able to handle 256bits in 1 clock. Thus the FPU has to be double clocked. Plain logic.
If you deny it, then you have to point out the 256bit units on SB's die plot.
cheers
P.S: Who else if not intel has "experienced designers" ? ;-)




Reply With Quote
Bookmarks