Performance Queen | ZLib CPU
Queen CPU test
This simple integer benchmark focuses on the branch prediction capabilities and the misprediction penalties of the CPU. It finds the solutions for the classic "Queens problem" on a 10 by 10 sized chessboard. At the same clock speed, theoretically the processor with the shorter pipeline and smaller misprediction penalties will attain higher benchmark scores. For example -- with HyperThreading disabled -- the Intel Northwood core processors get higher scores than the Intel Prescott core based ones due to the 20-step vs 31-step long pipeline. However, with HyperThreading enabled the picture is controversial, because due to architectural bottlenecks the Northwood core runs out of internal resources and slows down. Similarly, at the same clock speed AMD K8 class processors will be faster than AMD K7 ones due to the improved branch prediction capabilities of the K8 architecture.
CPU Queen test uses only the basic x86 instructions, it consumes less than 1 MB system memory and it is HyperThreading, multi-processor (SMP) and multi-core aware and is thus a multithreading CPU Benchmark with MMX, SSE2 and SSE3 optimizations.
The 970BE has a bit of a higher than expected result. We ran the test 5 times, rebooted, reset the BIOS to default... but the number remains the same. The software suite was recently updated, which might cause this variance.
ZLib CPU test
This integer benchmark measures combined CPU and memory subsystem performance through the public ZLib compression library Version 1.2.2
CPU ZLib test uses the basic x86 instructions, it is HyperThreading, and multi-core (CMP) aware. A very good test to measure multi-core performance among platforms.