Originally posted by: Intelia
Another thing to keep in mind is AMD is already ondie memory and the dothan memory controller is at the moment on the desk top is handycapped and still its hanging in there. CSI will be welcomed but the dothan don't seem to mind the onboard controller much do it . Lets say ondie CSI will bring 5% improvement (low est.)
Amd is coming out with a new socket and memory controller DDR2 or 3 If I were AMD I would go right to XDR and than know upgrades needed for a long while .
As I understand it the Intel CSI is going to built around a token ring type arrangement.I don't know much about this tech. It seems to me how ever that a point to point would be better . Any ideas on this?
Ya I am really curious about the Quad cores it seems meroms 4 core are going to consume 115 watts. and underload AMD best consums way more power than a dothan . This really is shaping up into some kind of battle. Intel Intel vs. AMD IBM I don't know who well come out on top but its going to be fun ride.
I really don't think that AMD will ever go XDR, and I doubt that Intel will either...
The reason being that as both companies move away from the FSB model and into a distributed model, memory bandwidth becomes less of an issue...
The quad cores
might have an issue, but the problem would be better solved by having a second dual channel controller.
It appears that the next generation of AMD server chips will be going with FB-DIMMs rather than XDR, and I suspect Intel will do the same.
As to CSI vs P2P, both are excellent but the latency of CSI will be (very slightly) higher from what I can tell (which isn't much until the specs are released). If it follows along the same stats as a Token ring, then it will be...
Of course that will be MUCH better than the FSB model.
With the CSI on-die for Merom, I expect a good 20-30% improvement and an overall reduction in power draw...
One last thing...I have a feeling that the test Xbit did was flawed...you mentioned that the AMD draws more power under load, but that just isn't the case. Lost circuits tested the chips themselves, and they matched the temps almost exactly. Venice under load drew 30w max...the xbit article had it in the 60w+ range!
The Hammer and Newcastle chips do indeed run at that range, but the Venice and San Diego chips run at less than half the power of the older chips...
As a form of anecdotal evidence, I did a test using a program called "Toast" (available
here). It's a great program for stressing out the CPU to absolute max...
I have a 3200+ Venice core system as my backup, so I decided to try it.
The max temp (after 1 hour) was 35C, standard temp is 24C, case temp is 28C. I have only 1 case fan and am using only the standard "boxed" HSF...