Memory performance
The basic result from the memory tests describes how quickly the processor can communicate with the memory subsystem. Beyond pure throughput, the time it takes to access particular memory cells is also important: the fewer CPU clock cycles required to access a memory cell (i.e. the lower the latency), the quicker the data can be read. Low latency is a particularly important factor in determining database performance, for example.
With 1,333MHz DDR3 memory, the Core 2 Extreme QX9650 has the highest throughput and lowest latency. Because of its slower 800MHz FSB, the Pentium 4 cannot keep up with the new 1,333MHz FSB Core 2 processors. The P4's NetBurst architecture also suffers besides from high latency when acessing 256-byte and 512-byte memory blocks.
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Talkback
This article states the no load power consumption of the QX9650 to be 190W. Other sources give a totally different figure - only 3.75 watts (http://www.tomshardware.com/2007/10/29/intel_penryn_4ghz_with_air_cooling/page13.html). Am I missing something here?
RayRoko 24 Jan 08 14:55 ReplyWell spotted: the figures in the graph refer to the power consumption of the whole PC, not just the CPU. A translation glitch from the original ZDNet Germany article there -- now corrected.
Charles McLellan 24 Jan 08 16:21 Reply