AMD Phenom X4 945 and 955BE processor review|test

Processors 196 Page 12 of 19 Published by


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 enabled HyperThreading 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 thus is a multithreading CPU Benchmark with MMX, SSE2 and SSE3 optimizations.

Right, this is what I meant. By far not all applications are lenient towards hyper-threading. As such it comes down to clock for clock raw performance. It certainly placing things in another perspective.

Let's thrown in overclocked results as well:

So once we throw in overclocked results of the 955BE yet now at 3800 MHz, the dynamic shifts even further. But everything is relative of course, Core i7 920 overclocks beautiful as well.

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.

And again overclocked we see pretty intensive gains. And while writing this I noticed I included the Phenom II X4 920 instead of Core i7 920, that last one scores 91150 KB/sec though.

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