Intel Core i5-580M Vs Core I7-720qm
We have seen many question regarding the performance comparison of the core-i5 and core-i7 processor. Unfortunately, there is no single answer. While the core i7 is “generally” better performing than the core i5, this is not always the case. We will need to check the exact part number to be able to tell which one is better. In this topic we will take a look at the Intel Core i5-580M Vs the core i7-720qm processor. Notice that the q in the suffix of the core i7-720qm denotes a quad core. The m in the suffix denotes that it is a mobile processor. Here are the quick facts
– While core i5-580M is a dual core processor, core i7-720qm is a quad core processor.
– The nominal clock frequency of the core i5-580m is 2.66 GHz, while that of the core i7-720qm is 1.6 GHz.
– Core i5-580M has 3 MB of L3 Cache while the core i7-720qm has 6 MB of L3 Cache ( Intel calls it smart cache)
– The core i5-580M comes with integrated graphics, the core i7-720qm has none.
– The core i5-580M does support the AES instruction sets, the core i7-720qm does not.
Given this background, it is hard to tell which of these two processors are faster. Does the lower 1.6 GHz frequency of the core i7-720qm more than compensates with its four core, making it faster than the core i5-580M. The only way to check it is by comparing the becnchmark data. It must be noted that the core i7 will have slight advantage in the multithreaded environment with its 4 cores.
– The Super Pi Benchmark Calculation takes 33 seconds with the core i5-580M. The Super Pi 2M calculation takes 36 seconds with core i7-720qm. Super Pi is however, more suited for the single threaded applications. However, it does establish the supremacy of the Core i5-580M.
– 3D Mark 06 score for the core i5-580M was found to be 3175 while the score for the Core i7-720qm was 3096. This again establishes the supremacy of the core i5-580M
-SiSoft Sandra Dhrystone (MIPS) score of core i5-580M is 43800 while that of the core i7-720qm has been reported to be 43990. The two roughly tie here.
– SiSoft Sandra Whetstone (MFLOPS) scores are roughly equal for the two. The core i7-720qm is marginally better with a score of 32845 as compared to i5-580M’s score of 31750.
The only conclusion that we can drive from the limited Benchmark results we have is that – the two processors have about the same performance in the multithreading environment. In the single threaded applications core i5-580M has slight edge.
Use this information to make buying decision for your laptop. You should not be paying extra for the core i7-720qm based notebook, just because it is quad core.