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Radeon HD 3470 256MB vs Radeon R7 250X 2GB

Intro

The Radeon HD 3470 256MB comes with core speeds of 800 MHz on the GPU, and 950 MHz on the 256 MB of DDR2 RAM. It features 40(8x5) SPUs as well as 4 Texture Address Units and 4 ROPs.

Compare those specs to the Radeon R7 250X 2GB, which has a core clock frequency of 1000 MHz and a GDDR5 memory speed of 1125 MHz. It also uses a 128-bit bus, and uses a 28 nm design. It is made up of 640 SPUs, 40 Texture Address Units, and 16 ROPs.

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

The Radeon R7 250X 2GB, in theory, should be quite a bit faster than the Radeon HD 3470 256MB overall. (explain)

Radeon R7 250X 2GB 72000 MB/sec
Radeon HD 3470 256MB 30400 MB/sec
Difference: 41600 (137%)

Texel Rate

The Radeon R7 250X 2GB is a lot (more or less 1150%) more effective at anisotropic filtering than the Radeon HD 3470 256MB. (explain)

Radeon R7 250X 2GB 40000 Mtexels/sec
Radeon HD 3470 256MB 3200 Mtexels/sec
Difference: 36800 (1150%)

Pixel Rate

The Radeon R7 250X 2GB is much (about 400%) better at FSAA than the Radeon HD 3470 256MB, and should be able to handle higher resolutions better. (explain)

Radeon R7 250X 2GB 16000 Mpixels/sec
Radeon HD 3470 256MB 3200 Mpixels/sec
Difference: 12800 (400%)

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

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Radeon R7 250X 2GB

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 R7 250X 2GB
Manufacturer AMD AMD
Year 2008 February 2014
Code Name RV620 PRO Cape Verde XT
Memory 256 MB 2048 MB
Core Speed 800 MHz 1000 MHz
Memory Speed 1900 MHz 4500 MHz
Power (Max TDP) (Unknown) watts 95 watts
Bandwidth 30400 MB/sec 72000 MB/sec
Texel Rate 3200 Mtexels/sec 40000 Mtexels/sec
Pixel Rate 3200 Mpixels/sec 16000 Mpixels/sec
Unified Shaders 40(8x5) 640
Texture Mapping Units 4 40
Render Output Units 4 16
Bus Type DDR2 GDDR5
Bus Width 128-bit 128-bit
Fab Process 55 nm 28 nm
Transistors (Unknown) million 1500 million
Bus PCIe 2.0 x16 PCIe 3.0 x16
DirectX Version DirectX 10.1 DirectX 11.2
OpenGL Version OpenGL 3.0 OpenGL 4.3

Memory Bandwidth: Memory bandwidth is the maximum amount of information (counted in megabytes per second) that can be transported over the external memory interface within a second. It's calculated by multiplying the bus width by its memory speed. If the card has DDR type memory, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the card's 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 amount of texture map elements (texels) that are applied per second. This figure is worked out by multiplying the total number of 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 processed in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly record to its local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.

Display Prices

Hide Prices

Radeon HD 3470 256MB

Amazon.com

Check prices at:

Radeon R7 250X 2GB

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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