AMD 4x4 Motherboard Details Unveiled
Anh Tuan Huynh
November 20, 2006 3:31 PM
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ASUS L1N64-SLI WS to be the first 4x4 motherboard
has obtained a couple of images of an upcoming motherboard for AMD’s 4x4 enthusiast platform. The motherboard is an ASUS L1N64-SLI WS powered by two NVIDIA nForce 680a MCPs. Two socket-1207 processors are supported with four memory slots—two slots per processor. With two nForce 680a MCPs the ASUS L1N64-SLI WS features 12 SATA 3.0 Gbps ports and one PATA for storage connectivity. There’s also an additional e.SATA port on the back I/O as well.
As far as PCI Exress goes the L1N64-SLI WS features a grand total of four PCI Express x16 slots for plenty of SLI and SLI physics processing power. Due to space limitations the L1N64-SLI WS only has one PCI and PCIe x1 slots.
Networking features of the ASUS L1N64-SLI WS include dual Gigabit Ethernet ports. The onboard Gigabit Ethernet features
NVIDIA’s FirstPacket, DualNet, Teaming and TCP/IP offload technologies.
Audio is powered by a high definition audio codec with optical and coaxial S/PDIF outputs. It is unknown which codec ASUS has equipped the L1N64-SLI WS with, though it could be
Analog Devices or Realtek
. The board is not legacy free and still has PS/2 and parallel ports.
Due to the complex design of AMD’s 4x4 platform, the ASUS L1N64-SLI WS uses an eATX form factor which will not fit in smaller cases. Since dual processors require a little extra power, ASUS has equipped the L1N64-SLI WS with an 8-pin EPS12v and Molex power connectors.
U.S. distributors claim the ASUS L1N64-SLI WS will have an MSRP of $480 without bundles, but the street price will probably be much less.
AMD’s 4x4 enthusiast platform to arrive later this month with three Athlon FX processors—FX-70, FX-72 and FX-74
. It is unknown if the ASUS L1N64-SLI WS will be compatible
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RE: If you're going to do this...
11/30/2006 1:24:53 AM
I don't think you know what you are talking about.
Actually, yes I do. I said nothing about bandwidth, and it works great if you are shuttling large chunks of data combined with a NUMA aware OS. However, you suffer from a fit ignorance and you are mis-interpreting what I said. This is common among people who really know nothing about computing, there is a difference between throughput and latency and how those combine to really produce speed in terms of data rate.
NUMA, non-uniform memory access, by definition means access to any given part of memory will differnt in access time depending on the location of that memory. For example, CPU1 has local connection to MEM1 and CPU2 has local connection to MEM2, if CPU1 cache hit requires data located on MEM2 CPU2 must fetch the data, shuttle to CPU1 via the cHT link --- this will by the fact that it is now across a bus induce extra latency.
IBM measured the affect:
See figure 4, where main memory calls split into two discrete values for latency.
Hmmmm, did I not predict that Kentsfield would have better memory metrics:
Hell -- an FX-62 is showing better memory performance on the small stride cache line traces (where latency has the biggest affect on speed through the system). 4x4 is suffering from this....
"Paying an extra $500 for a computer in this environment -- same piece of hardware -- paying $500 more to get a logo on it? I think that's a more challenging proposition for the average person than it used to be." -- Steve Ballmer
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