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Radeon HD 3470 512MB vs Radeon HD 3690/3830

Intro

The Radeon HD 3470 512MB comes with a core clock speed of 800 MHz and a GDDR3 memory speed of 950 MHz. It also uses a 128-bit memory bus, and makes use of a 55 nm design. It is made up of 40(8x5) SPUs, 4 TAUs, and 4 ROPs.

Compare those specifications to the Radeon HD 3690/3830, which features core speeds of 668 MHz on the GPU, and 828 MHz on the 256 MB of GDDR3 RAM. It features 320(64x5) SPUs as well as 16 Texture Address Units and 16 ROPs.

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

The Radeon HD 3470 512MB should theoretically be just a 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 is a lot (approximately 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 will be much (approximately 234%) faster with regards to anti-aliasing than the Radeon HD 3470 512MB, and will be capable of handling higher screen resolutions more effectively. (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 information (in units of MB per second) that can be transported over the external memory interface in one second. It is calculated by multiplying the bus width by its memory clock speed. If it uses DDR RAM, the result should be multiplied by 2 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 amount of texture map elements (texels) that are applied in one second. This number is calculated by multiplying the total amount of texture units by the core speed of the chip. The better the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly write to the local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the maximum 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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