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Radeon HD 3470 256MB vs Radeon HD 3690/3830

Intro

The Radeon HD 3470 256MB makes use of a 55 nm design. AMD has clocked the core frequency at 800 MHz. The DDR2 memory runs at a frequency of 950 MHz on this model. It features 40(8x5) SPUs as well as 4 Texture Address Units and 4 Rasterization Operator Units.

Compare all that to the Radeon HD 3690/3830, which features GPU core speed of 668 MHz, and 256 MB of GDDR3 memory running at 828 MHz through a 128-bit bus. It also is made up of 320(64x5) Stream Processors, 16 Texture Address Units, and 16 ROPs.

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

The Radeon HD 3470 256MB, in theory, should perform just a bit faster than the Radeon HD 3690/3830 overall. (explain)

Radeon HD 3470 256MB 30400 MB/sec
Radeon HD 3690/3830 26496 MB/sec
Difference: 3904 (15%)

Texel Rate

The Radeon HD 3690/3830 will be much (approximately 234%) more effective at AF than the Radeon HD 3470 256MB. (explain)

Radeon HD 3690/3830 10688 Mtexels/sec
Radeon HD 3470 256MB 3200 Mtexels/sec
Difference: 7488 (234%)

Pixel Rate

If using a high screen resolution is important to you, then the Radeon HD 3690/3830 is superior to the Radeon HD 3470 256MB, by far. (explain)

Radeon HD 3690/3830 10688 Mpixels/sec
Radeon HD 3470 256MB 3200 Mpixels/sec
Difference: 7488 (234%)

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 HD 3690/3830

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 HD 3690/3830
Manufacturer AMD AMD
Year 2008 2008
Code Name RV620 PRO RV670 PRO
Memory 256 MB 256 MB
Core Speed 800 MHz 668 MHz
Memory Speed 1900 MHz 1656 MHz
Power (Max TDP) (Unknown) watts 75 watts
Bandwidth 30400 MB/sec 26496 MB/sec
Texel Rate 3200 Mtexels/sec 10688 Mtexels/sec
Pixel Rate 3200 Mpixels/sec 10688 Mpixels/sec
Unified Shaders 40(8x5) 320(64x5)
Texture Mapping Units 4 16
Render Output Units 4 16
Bus Type DDR2 GDDR3
Bus Width 128-bit 128-bit
Fab Process 55 nm 55 nm
Transistors (Unknown) million (Unknown) million
Bus PCIe 2.0 x16 PCIe 2.0 x16
DirectX Version DirectX 10.1 DirectX 10.1
OpenGL Version OpenGL 3.0 OpenGL 3.0

Memory Bandwidth: Memory bandwidth is the max amount of data (measured in MB per second) that can be transported past the external memory interface in a second. It's worked out by multiplying the interface width by its memory clock speed. If it uses DDR type memory, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher 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 number of texture map elements (texels) that are applied in one second. This is calculated by multiplying the total texture units of the card 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 could possibly write to the local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.

Display Prices

Hide Prices

Radeon HD 3470 256MB

Amazon.com

Check prices at:

Radeon HD 3690/3830

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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