What don't you understand is extremely large. Putting up system power from cherry picked CPUs not shipping yet and cherry picked motherboard also not shipping yet against a retail MB with more on board than Intel's MB and either a pre release A64 X2 3800+ or one bought in a store long ago. The A64 X2 3800+s shipping now have tweaks not in the one tested and average lower in TDPmax than the one tested.
Just look at these quote from that preview:
The Platform - Yet Another Socket Well it wasn't tested on a current shipping desktop MB.
It's got a single PCIe x16 slot, meaning you don't have to rely on integrated graphics
Our test configuration is identical to what we used in our Athlon 64 X2 3800+ review, however we can't disclose the motherboard used for the Yonah platform. We can say that it used the Intel 945G chipset and was outfitted with 2 x 512MB DDR2-533 DIMMs; the rest of the configuration remained the same as the AMD and Intel systems.
Notice that they aren't allowed to talk about the MB. Its likely to be some special one off prototype test MB using a 945G as the NB. All we know is that it has just one PCIe x16 slot. The AMD configuration is known:
Date: August 1st, 2005 So the A64 X2 3800+ had to be bought or sample given before this.
Socket-939 Athlon 64 CPUs 2 x 512MB OCZ PC3200 EL Dual Channel DIMMs 2-2-2-7 ASUS A8N-SLI Deluxe ATI Radeon X850 XT PCI Express
So you are comparing a SLI deluxe desktop ATX MB to some micro BTX MB with just one graphics slot.
On page two the consumptions are only different by 1W under load. Likely the A64 X2 3800+ is a Toledo core with half the cache disabled and not a true Manchester.
ASUS A8N-SLI Deluxe has:
ATX MB - Retail / NVIDIA nForce4 SLI chipset / 939-pin / up to 4GB DDR400 ECC/Non-ECC support / 8-ch Audio/ Dual Gigabit LAN/ 2 PCIe x16/ 3 PCI & 2 PCIe x1 / SATA RAID / 1394 Firewire.
Let's see, 2 GBe ports, 8 SATA, 2 IDE CH, 8 Audio, 2 GPU slots, 2 PCI x1s, 3 PCI slots. Much more than that Intel Yonah test MB. The Asus supports overclocked A64 with >110W TDPs, but I don't think the Intel one could support near those power requirements. It likely wouldn't support even a 840EE. We don't even know if the PS is the same between the Yonah system and the AMD system.
So system power comparisons between AMD and Yonah are flawed greatly. No wonder Intel doesn't want the public to see the MB and measure the 12V VRM input to get the true power usage of the Yonah. Maybe its that Yonah doesn't look so good when it actually comes out. Like so many Intel CPUs of late.
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