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Radeon HD 3470 512MB vs Radeon HD 3690/3830

Intro

The Radeon HD 3470 512MB has core speeds of 800 MHz on the GPU, and 950 MHz on the 512 MB of GDDR3 memory. It features 40(8x5) SPUs along with 4 TAUs and 4 Rasterization Operator Units.

Compare all that to the Radeon HD 3690/3830, which comes with core speeds of 668 MHz on the GPU, and 828 MHz on the 256 MB of GDDR3 memory. It features 320(64x5) SPUs along with 16 TAUs and 16 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the Radeon HD 3470 512MB should be 15% faster than the Radeon HD 3690/3830 in general, due to its higher bandwidth. (explain)

Radeon HD 3470 512MB 30400 MB/sec
Radeon HD 3690/3830 26496 MB/sec
Difference: 3904 (15%)

Texel Rate

The Radeon HD 3690/3830 should be quite a bit (about 234%) more effective at anisotropic filtering than the Radeon HD 3470 512MB. (explain)

Radeon HD 3690/3830 10688 Mtexels/sec
Radeon HD 3470 512MB 3200 Mtexels/sec
Difference: 7488 (234%)

Pixel Rate

The Radeon HD 3690/3830 should be a lot (about 234%) more effective at AA than the Radeon HD 3470 512MB, and will be able to handle higher resolutions while still performing well. (explain)

Radeon HD 3690/3830 10688 Mpixels/sec
Radeon HD 3470 512MB 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 512MB

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 512MB Radeon HD 3690/3830
Manufacturer AMD AMD
Year 2008 2008
Code Name RV620 PRO RV670 PRO
Memory 512 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 GDDR3 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: Bandwidth is the max amount of information (counted in MB per second) that can be transferred over the external memory interface within a second. It's calculated by multiplying the card's interface width by its memory speed. If the card has DDR type RAM, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly record to the local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.

Display Prices

Hide Prices

Radeon HD 3470 512MB

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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