Review Index:

Intel Core i5-3470 Ivy Bridge Processor and HD 2500 Graphics Review

Author: Ryan Shrout
Subject: Processors
Manufacturer: Intel

OpenCL Performance


Basemark CL

Rightware’s Basemark CL provides compelling feature set to coordinate parallel computation across heterogeneous processors utilizing OpenCL. Image manipulation tests run filters on image data and produce the filtered output on the screen. The image manipulation filters are applied to video streams as a separate test, which allows benchmarking of bandwidth limitations from moving data from CPU to GPU, providing a solid real-world case for benchmarking. Physic tests enable leveraging of extra computing power that OpenCL brings into different platforms. The feature tests provided by Basemark CL enable the testing of performance of single or several features on the hardware.

Physical simulations are good area for leveraging extra computing power which OpenCL brings. Physics simulations are already heavily used in PC-games, but not to a greater extent in mobile games or in applications doing heavy 3D physics simulation. With the help of good OpenCL performance it is possible for future mobile games and applications to include more physics based animations and game elements.

Basemark CL contains fluid and cloth simulations. Cloth simulations are widely used in games to add extra realism to cloths of characters, flags and other soft body items. Fluid simulations are used in games to simulate smoke, water and other materials. The realistic simulation adds possibility for player interaction with visuals, which is not possible with currently used artist made animations.

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The Mandelbulb fractal is a type of 3D fractal. The fractal was recently discovered by Daniel White and Paul Nylander.

3D fractal is rendered using ray tracing. The ray tracing for the 3D fractal uses the basic ray tracing formula. For each point in the canvas a ray is casted towards to the object to be rendered. Nearest distance of a point to the surface of the Mandelbulb is calculated. The power of the Mandelbulb is changed constantly so the polynomial solution for power 8 Mandelbulb is not used, therefore this test benchmarks the performance of built-in mathematical functions in the same vein as Julia fractal benchmarks the raw ALU performance. If the point is within predefined distance of the fractal surface the ray tracing is stopped and lighting calculations are done, if not the point is moved along the ray forward until the surface is found or predefined maximum iteration count is exceeded.

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Benchmarking image manipulation performance is useful due to fact that image manipulation filters are widely used in image processing and computer machine vision applications. Various image manipulation filters are used in machine vision to find out discontinuities and remove unwanted features from images. Image processing in embedded devices has been increasingly important since the advent of cheap digital cameras. OpenCL devices may allow fast image enhancement on a modern smartphone without degrading usability nor requiring application specific circuits to perform this task.

Image manipulation tests run filters on image data and produce the filtered output on the screen. The implemented filters are listed below in separate sub paragraphs. The images in the paragraphs demonstrate how the corresponding filters affect the image. In addition performance of some of the image processing filters produces a good indication towards performance of other signal processing tasks, such as audio processing.

The image manipulation filters are applied to video streams in a separate test. This allows benchmarking the bandwidth limitations from moving data from Host to OpenCL device (e.g from CPU to GPU) and provides a good real world use case. Time spent decoding the video is not taken into account when determining benchmark score.

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The results vary quite a bit based on the collection of tests starting with the physics simulations that see a dramatic 43% advantage for the Core i7-3700K. The raytracing set sees a 40% difference while the image and video manipulation scores are closer to 27% when comparing the 3470 and 3770K. 


June 27, 2012 | 04:50 AM - Posted by HyperMinimalism

The most compelling use of the HD4000 graphics is in the mid to low end segment. OEM's may disagree but I think that Intel forgets that they can compete with AMD and Nvidia on the low end discreet GPU segment if they just put their best foot forward.

We are still waiting for their sub $200 chips. Now if they could just marry the great x86 performance with HD4000 (or better...).

June 27, 2012 | 10:19 AM - Posted by Tim Verry

If I had to guess, they won't pair their sub-$200 chips with the better HD400 graphics :(

June 29, 2012 | 09:34 PM - Posted by HyperMinimalism

That is a pretty good guess.

The decision to not do so makes me want to smash 300mm wafers over CEO's heads.

June 27, 2012 | 01:19 PM - Posted by Azuza001 (not verified)

I don't understand, is it just me or do most review sites always give awards now days. To me the simple fact that the 2600K is still avalible for about the same price would make this a no-award product.

Quote : "Still, the Core i5-3470 would make a solid low cost processor for users looking to build a reasonable cost machine for some mainstream gaming and general enthusiast computing."

If I'm buying a cpu for mainstream gaming and general enthusiast computing I'm not buying a processor with a locked multiplier.

Love the site, keep it up!

June 27, 2012 | 02:25 PM - Posted by jacob (not verified)

Comparison to Ivy i5 3570k in benchmarks, wrap-up?

July 3, 2012 | 02:56 PM - Posted by Anonymous (not verified)

Why does Intel still sell HD2500 in their chips? Tired of Intel hashing up older GPU architecture just to satisfy price points.

July 16, 2012 | 04:18 PM - Posted by Brandon (not verified)

Does this chip matter that much when the i5-3550 already exists? Very small differences between the two chips, and only a $5 difference on Newegg. (A promo right now actually makes the 3550 even cheaper).

I was excited when I first heard about this chip... but now I think it's just another unnecessary SKU.

December 16, 2012 | 06:06 AM - Posted by hassan (not verified)

Is the intel core i3 cpu& intel hd graphic suitable for cfd code in fortran?
what about fluent 6.3?

July 22, 2014 | 02:38 PM - Posted by BossTek (not verified)

Eh man yo check it yo! I got this Intel stuff from Intel since I am a partner yo! And I can sale it at half price. I got i7's for $500 and Intel i5's for $400 and i3's for $350 yo! That's cheaper than you ever get it at old egg yo!

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