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Radeon HD 3470 512MB vs Radeon HD 3690/3830

Intro

The Radeon HD 3470 512MB uses a 55 nm design. AMD has set the core speed at 800 MHz. The GDDR3 RAM is set to run at a frequency of 950 MHz on this specific card. It features 40(8x5) SPUs as well as 4 TAUs and 4 Rasterization Operator Units.

Compare all of that to the Radeon HD 3690/3830, which has clock 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.

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

The Radeon HD 3470 512MB should theoretically be a little bit faster than the Radeon HD 3690/3830 in general. (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 will be quite a bit (more or less 234%) more effective at texture 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 is quite a bit (about 234%) better at FSAA than the Radeon HD 3470 512MB, and should be capable of handling higher screen resolutions better. (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 largest amount of data (measured in MB per second) that can be transported over the external memory interface in one second. It is calculated by multiplying the interface width by its memory speed. In the case of DDR type memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly write to its local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of colour ROPs by the the core speed of the card. 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 output rate also depends on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to 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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