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Radeon HD 3470 512MB vs Radeon R5 M255

Intro

The Radeon HD 3470 512MB has core clock speeds of 800 MHz on the GPU, and 950 MHz on the 512 MB of GDDR3 RAM. It features 40(8x5) SPUs as well as 4 Texture Address Units and 4 Rasterization Operator Units.

Compare that to the Radeon R5 M255, which makes use of a 28 nm design. AMD has clocked the core frequency at 940 MHz. The DDR3 RAM is set to run at a speed of 1000 MHz on this particular card. It features 320 SPUs along with 20 TAUs and 8 ROPs.

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Performance-wise, the Radeon HD 3470 512MB should theoretically be quite a bit superior to the Radeon R5 M255 overall. (explain)

Radeon HD 3470 512MB 30400 MB/sec
Radeon R5 M255 16000 MB/sec
Difference: 14400 (90%)

Texel Rate

The Radeon R5 M255 is a lot (approximately 488%) better at AF than the Radeon HD 3470 512MB. (explain)

Radeon R5 M255 18800 Mtexels/sec
Radeon HD 3470 512MB 3200 Mtexels/sec
Difference: 15600 (488%)

Pixel Rate

The Radeon R5 M255 will be quite a bit (about 135%) faster with regards to anti-aliasing than the Radeon HD 3470 512MB, and will be able to handle higher resolutions more effectively. (explain)

Radeon R5 M255 7520 Mpixels/sec
Radeon HD 3470 512MB 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 512MB

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 512MB Radeon R5 M255
Manufacturer AMD AMD
Year 2008 June 2014
Code Name RV620 PRO Jet Pro
Memory 512 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 GDDR3 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: Bandwidth is the largest amount of information (in units of MB per second) that can be transferred across the external memory interface in one second. The number is worked out by multiplying the card's bus width by the speed of its memory. If the card has DDR type memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed per second. This is worked out by multiplying the total texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the video 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 most pixels the video card could possibly record to the local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.

Display Prices

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Radeon HD 3470 512MB

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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