Quote Originally Posted by sdsdv10 View Post
So if I understand what your saying, the argument is based on logic not benchmark information. Is this correct?
That is partially correct, but benchmarks don't always tell the whole story either. For instance, Intel will get scores that are often better than twice as good as AMD due to the l2 cache latency, but in reality Intel only sees about 5-10% ipc increase over k10.5.

My argument is based off the diagrams we've seen so far, which all point to sizable gains. AMD themselves said 35%, I personally think it'll be much closer to 20% on average, which is still a really big increase. The rest of the math was done based off of logic.

Quote Originally Posted by savantu View Post
Bulldozer looks to be all about through-output oriented.I think it will be weaker in single threaded integer apps than current K10.5s since the INT units were simplified.
For FP, a cluster will beat a single core K10.5 but it will be similar to a double core K10.5

So while in commercial apps it will be great, in desktop ones it won't be any miracle.
That's my 2 cents.
You can't do math can you? All the evidence so far has pointed to fairly good gains in IPC (just look at Dresdenboy's work), there is literally no logical reason to think that it will be slower.

Really the only major question mark will be the effects of CMT, as none of us (as far as I know) have seen it in action before and so we have no clue what that will do the single threaded performance.

Quote Originally Posted by qcmadness View Post
Long time ago, I think the difference between 3 and 4 issue INT core makes a big difference, but the major difference is about the branch prediction and cache miss.
If by long time ago, you mean Core 2 duo vs K10, then yes. It still does make a big difference and is one of the main reasons why amd can't touch Intel on IPC right now.