[QUOTE=savantu;2400130]Intel and AMD know; according to Intel the difference is negligible.AMD OTOH claims native is better , doesn't say by how much.
I expect the truth to be in between.
[quote/]

Well just look at the other benchmarks thread, that'll explains it all. Native is better for HPC solutions, which the K8 and K10 are designed for. Desktop users won't see much difference because there aren't many mainstream software that are multi threaded.

Let's look at the current X2s and Conroe.We can call the K8 X2 as the best MCM-like aproach; 2 cores which are connected by an outside link.
C2D uses a shared L2 , the most "native" aproach.
Shared Cache is not the definition for native multi cores. It's a design choice.
Shared Cache is good for single threaded software or when you're running benchmarks. In real world situations where you use multiple software at the same time, or better known as multi tasking you'll find dedicated L2 Caches more efficient.

You can see this in Quake 4 benchmarks. Conroe's performance is hit by a larger margin compared to the X2 when you enable SMP. That's because the shared Cache suffers from "cache conflicts". Dedicated cache will not have that problem. It's just a choice and does not mean it's more native than another.

Time and time again K8 showed it was in no way bottlenecked by its memory sysytem.It only cares about low latency.
Trust me on this, the K8 does not only care about latency, the K8 simply can not handle higher bandwidth, than a given max. Right now DDR2 has gone over that line. Seek it up in AMD's document if you don't trust me.

K10 major flaw is in its cache size ; 512KB is small and the L3 will be a bottleneck.Also its latency if true ( 38 ) is horrible compared with K8/C2D/Penryn ( 12-14 ) .Latest reports put Penryn's massive L2 at 13 cycle latency which is nothing short of astounding.
I don't think it's small, the IMC will take care of that.

Umh , not exactly.The changes made will offer sizable benefits for existing code.
Well just take a look at the other Benchmark thread, you'll see most of my statements confirmed. See in Cinebench you can clearly see that professional software can make a huge difference. A native Quad Core does look to scale better than an MCM solution agreed?