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Radeon HD 3470 512MB vs Radeon HD 3690/3830

Intro

The Radeon HD 3470 512MB features a clock speed of 800 MHz and a GDDR3 memory frequency of 950 MHz. It also features 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 Raster Operation Units.

Compare those specifications to the Radeon HD 3690/3830, which uses a 55 nm design. AMD has set the core frequency at 668 MHz. The GDDR3 memory runs at a frequency of 828 MHz on this specific card. 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

As far as performance goes, the Radeon HD 3470 512MB should theoretically be just a bit superior to 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 quite a bit (approximately 234%) faster with regards to 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

If using a high resolution is important to you, then the Radeon HD 3690/3830 is a better choice, and very much so. (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: Memory bandwidth is the maximum amount of information (in units of MB per second) that can be moved across the external memory interface in a second. It is worked out by multiplying the card's interface width by the speed of its memory. If the card has DDR type RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly record to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on lots of other factors, especially the memory bandwidth - 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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