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Radeon HD 3470 256MB vs Radeon R5 M255

Intro

The Radeon HD 3470 256MB features a clock frequency of 800 MHz and a DDR2 memory speed of 950 MHz. It also features a 128-bit bus, and makes use of a 55 nm design. It features 40(8x5) SPUs, 4 TAUs, and 4 Raster Operation Units.

Compare those specs to the Radeon R5 M255, which features core clock speeds of 940 MHz on the GPU, and 1000 MHz on the 2048 MB of DDR3 memory. It features 320 SPUs as well as 20 Texture Address Units and 8 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the Radeon HD 3470 256MB should perform a lot faster than the Radeon R5 M255 overall. (explain)

Radeon HD 3470 256MB 30400 MB/sec
Radeon R5 M255 16000 MB/sec
Difference: 14400 (90%)

Texel Rate

The Radeon R5 M255 is a lot (more or less 488%) faster with regards to AF than the Radeon HD 3470 256MB. (explain)

Radeon R5 M255 18800 Mtexels/sec
Radeon HD 3470 256MB 3200 Mtexels/sec
Difference: 15600 (488%)

Pixel Rate

If running with a high screen resolution is important to you, then the Radeon R5 M255 is a better choice, by far. (explain)

Radeon R5 M255 7520 Mpixels/sec
Radeon HD 3470 256MB 3200 Mpixels/sec
Difference: 4320 (135%)

Please note that the above 'benchmarks' are all just theoretical - the results were calculated based on the card's specifications, and real-world performance may (and probably will) vary at least a bit.

Price Comparison

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Radeon HD 3470 256MB

Amazon.com

Check prices at:

Radeon R5 M255

Amazon.com

Check prices at:

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

Specifications

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Model Radeon HD 3470 256MB Radeon R5 M255
Manufacturer AMD AMD
Year 2008 June 2014
Code Name RV620 PRO Jet Pro
Memory 256 MB 2048 MB
Core Speed 800 MHz 940 MHz
Memory Speed 1900 MHz 2000 MHz
Power (Max TDP) (Unknown) watts (Unknown) watts
Bandwidth 30400 MB/sec 16000 MB/sec
Texel Rate 3200 Mtexels/sec 18800 Mtexels/sec
Pixel Rate 3200 Mpixels/sec 7520 Mpixels/sec
Unified Shaders 40(8x5) 320
Texture Mapping Units 4 20
Render Output Units 4 8
Bus Type DDR2 DDR3
Bus Width 128-bit 64-bit
Fab Process 55 nm 28 nm
Transistors (Unknown) million (Unknown) million
Bus PCIe 2.0 x16 PCIe 3.0 x8
DirectX Version DirectX 10.1 DirectX 11.2
OpenGL Version OpenGL 3.0 OpenGL 4.3

Memory Bandwidth: Memory bandwidth is the largest amount of information (measured in MB per second) that can be transferred across the external memory interface in a second. It is calculated by multiplying the bus width by its memory speed. In the case of DDR memory, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed per second. This figure is worked out by multiplying the total number of texture units by the core speed of the chip. The higher this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly record to the local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.

Display Prices

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Radeon HD 3470 256MB

Amazon.com

Check prices at:

Radeon R5 M255

Amazon.com

Check prices at:

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

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