Tag Archives: dual-core

Are Two Cores as Good as Four Cores?

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Michael from CMPLive decided to do a special episode of “Real or Hoax” for our channels. He is a brave soul, and decided to take on the age-old question of whether or not two cores really are as good as four. In order to do this test properly, he made sure that the machines used were truly alike, apart from the cores themselves.

To run this test, Michael performed tests on four different popular games. He also did tests on several different types of software. You can see from the graph shown in the video, there’s a significant difference in the performance, but could easily be a bottleneck in the graphics. The difference is most definitely NOT double, though, as you might expect.

During a different test, Michael set his graphics to the highest possible settings. Low and behold, there was NO difference between two cores and four cores as far as performance. This is because his graphics card experienced a bottleneck long before the CPU would have.

When testing playing Assassins’ Creed, you can see by the charts that both low and high graphics usage produced nearly the exact same results – no matter how many cores were being used.

Flight Simulator X has been long believed to be CPU intensive… again, though, there was no difference. How can this be so?

Overall, Michael proved that there truly is not much difference when you use four cores instead of two. The biggest difference was in rendering and processing videos… the quad-core machine definitely performed faster. In every other case, though, it didn’t matter how many cores were installed in the computer. When it came to the games, the graphics card mattered far more than the CPU itself.

Thanks, Michael, for producing a fantastic video for us.

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Processor Speed Vs CPU Cores

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If you had to choose between a 2.2 hz quad-core or a 2.5ghz dual-core one, how do you know which is right? In my mind, you’re better off with as many cores as you can possibly get. Even if software is not optimized for maximum cores at this point, it certainly will be in the future.

If an app is designed with multiple cores in mind, you’ll be happier having more cores no matter what the processor speed is. It depends on opimizational code, honestly. Check your benchmarks, and see how the two processors compare.

Dollar for dollar, though, I’d go for more cores rather than the raw speed of the processors.

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Corrections on Quad Core and Multi Core CPUs

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http://live.pirillo.com/ – I take pride in the fact that I don’t know everything. I love to learn, and looking to the community for help filling in my blanks is important to me. Consider this an update… 1.1 if you will… to my earlier video on Quad and Dual Core CPUs.

My original video on Quad Core processors was met with some constructive criticism. Apparently, I explained one of the main points wrong. So… let’s set the record straight!

When you say “quad core” or “dual core”, it doesn’t mean there are literally four (or two) tiny little CPUs sitting inside the computer case. Rather, there is one CPU, with four (or two) cores to it. This enables the CPU to run faster, and stay cooler. When I open up my process manager, you can see that Windows manages these cores separately. It shows four separate boxes, making it seem as though there are four separate CPUs. I think this is where my explanation got muddied before, and I wanted to make things right.

By all mean, don’t let what I say in my videos be the end of the conversation on any matter. Ask questions, extend the discussion. If I’m wrong, or unclear on something, let me know about it.

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What is Dual Core?

http://live.pirillo.com/ – BigJohnMidland wants to know exactly what dual core means.

Dual core refers to the number of processing cores in the processor package. So, in essence, with a dual core processor you actually have two processors. The advantage is that you can get up to twice the processing power. If you do a lot of video editing, photo editing, or run many programs at one time you’ll notice a significant increase in the responsiveness of your system.

Intel introduced their Dual-Core processors (marketed as Core 2) back in 2005:

An Intel dual-core processor-based PC will enable new computing experiences as it delivers value by providing additional computing resources that expand the PC’s capabilities in the form of higher throughput and simultaneous computing. Imagine that a dual-core processor is like a four-lane highway: it can handle up to twice as many cars as its two-lane predecessor without making each car drive twice as fast. Similarly, with an Intel dual-core processor-based PC, people can perform multiple tasks such as downloading music and gaming simultaneously.

AMD followed up with their 64-bit X2 Dual-Core systems:

The AMD Athlon 64 X2 Dual-Core processor puts the power of dual-core technology on the desktop. Dual-core processors contain two processing cores, residing on one chip, that perform calculations on two streams of data, thereby increasing efficiency and speed while running multiple programs and the new generation of multi-threaded software.

For the end-user this means a significant increase in response and performance when running multiple applications simultaneously. The AMD Athlon 64 X2 Dual-Core processor outperforms the highest-performing AMD Athlon 64 4000+ single-core processor on multi-tasking benchmarks by up to 30..

Should you upgrade to a dual core processor? Well, they’re quickly becoming the standard desktop processors of choice so you may not have a choice. In the future we’ll even see quad and octo core processors become standard in many home machines.

What do you think?