Intel Demos Core 2 Extreme QX9650 Quad-Core At IDF
MojoKid writes "Intel demonstrated a dual socket gaming rig at IDF this week, based on their Skulltrail platform with the X38 chipset. The interesting thing about this machine wasn't just that it had 45nm quad-core CPUs in its sockets, as well as PCI Express 2.0 capable slots, but also that it was running a pair of NVIDIA graphics cards in SLI. That's right, SLI on an Intel chipset. No word whether or not X38 would officially be supported with SLI just yet. In fact, NVIDIA representatives noted Intel was buying NVIDIA nForce 100 SLI Southbridges just for this one Intel motherboard model."
The SSE4 ESA SAD instruction (for an exhaustive SAD motion search) has been touted constantly as the "new big thing" with DivX benchmarks showing 100% speed improvements, etc, etc. This is generally bullshit. The DivX encoder was specifically modified so as to use the exhaustive motion search in its normal encoding, basically contriving the test to work faster with SSE4. Talk to anyone working on an encoder and they'll tell you the same--not only is an exhaustive motion search generally useful, but there are equivalent algorithms, such as successive elimination (SEA) that are actually faster implemented in software than SSE4 is implemented in hardware with mathematically equivalent results. The main developer of x264, for example, has stated that SSE4 offers basically no useful instructions whatsoever.
The chip as a whole, on the other hand, is quite awesome, but I think its important to correct this bit of common misinformation.