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Radeon HD 3470 512MB vs Radeon HD 6450 (OEM) 1GB

Intro

The Radeon HD 3470 512MB has a GPU core clock speed of 800 MHz, and the 512 MB of GDDR3 memory runs at 950 MHz through a 128-bit bus. It also features 40(8x5) SPUs, 4 TAUs, and 4 ROPs.

Compare those specifications to the Radeon HD 6450 (OEM) 1GB, which has GPU clock speed of 750 MHz, and 1024 MB of GDDR5 memory set to run at 900 MHz through a 64-bit bus. It also is made up of 160 SPUs, 8 Texture Address Units, and 4 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the Radeon HD 3470 512MB should be 6% quicker than the Radeon HD 6450 (OEM) 1GB in general, due to its greater bandwidth. (explain)

Radeon HD 3470 512MB 30400 MB/sec
Radeon HD 6450 (OEM) 1GB 28800 MB/sec
Difference: 1600 (6%)

Texel Rate

The Radeon HD 6450 (OEM) 1GB is much (about 88%) more effective at AF than the Radeon HD 3470 512MB. (explain)

Radeon HD 6450 (OEM) 1GB 6000 Mtexels/sec
Radeon HD 3470 512MB 3200 Mtexels/sec
Difference: 2800 (88%)

Pixel Rate

If using high levels of AA is important to you, then the Radeon HD 3470 512MB is the winner, though only just barely. (explain)

Radeon HD 3470 512MB 3200 Mpixels/sec
Radeon HD 6450 (OEM) 1GB 3000 Mpixels/sec
Difference: 200 (7%)

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 6450 (OEM) 1GB

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 6450 (OEM) 1GB
Manufacturer AMD AMD
Year 2008 February 2011
Code Name RV620 PRO Caicos
Memory 512 MB 1024 MB
Core Speed 800 MHz 750 MHz
Memory Speed 1900 MHz 3600 MHz
Power (Max TDP) (Unknown) watts 31 watts
Bandwidth 30400 MB/sec 28800 MB/sec
Texel Rate 3200 Mtexels/sec 6000 Mtexels/sec
Pixel Rate 3200 Mpixels/sec 3000 Mpixels/sec
Unified Shaders 40(8x5) 160
Texture Mapping Units 4 8
Render Output Units 4 4
Bus Type GDDR3 GDDR5
Bus Width 128-bit 64-bit
Fab Process 55 nm 40 nm
Transistors (Unknown) million 370 million
Bus PCIe 2.0 x16 PCIe 2.1 x16
DirectX Version DirectX 10.1 DirectX 11
OpenGL Version OpenGL 3.0 OpenGL 4.1

Memory Bandwidth: Bandwidth is the largest amount of data (counted in MB per second) that can be transported over the external memory interface in a second. It is calculated by multiplying the card's interface width by its memory speed. In the case of DDR RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels the video card can possibly record to its local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the number of ROPs by the the card's clock speed. 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 rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the 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 6450 (OEM) 1GB

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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