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Radeon HD 3470 256MB vs Radeon HD 6450 (OEM)

Intro

The Radeon HD 3470 256MB has clock speeds of 800 MHz on the GPU, and 950 MHz on the 256 MB of DDR2 RAM. It features 40(8x5) SPUs as well as 4 TAUs and 4 Rasterization Operator Units.

Compare all of that to the Radeon HD 6450 (OEM), which comes with GPU core speed of 625 MHz, and 512 MB of GDDR3 memory set to run at 800 MHz through a 64-bit bus. It also features 160 SPUs, 8 Texture Address Units, and 4 ROPs.

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically, the Radeon HD 3470 256MB should be quite a bit faster than the Radeon HD 6450 (OEM) in general. (explain)

Radeon HD 3470 256MB 30400 MB/sec
Radeon HD 6450 (OEM) 12800 MB/sec
Difference: 17600 (138%)

Texel Rate

The Radeon HD 6450 (OEM) should be quite a bit (approximately 56%) faster with regards to anisotropic filtering than the Radeon HD 3470 256MB. (explain)

Radeon HD 6450 (OEM) 5000 Mtexels/sec
Radeon HD 3470 256MB 3200 Mtexels/sec
Difference: 1800 (56%)

Pixel Rate

The Radeon HD 3470 256MB should be much (approximately 28%) better at anti-aliasing than the Radeon HD 6450 (OEM), and able to handle higher resolutions without losing too much performance. (explain)

Radeon HD 3470 256MB 3200 Mpixels/sec
Radeon HD 6450 (OEM) 2500 Mpixels/sec
Difference: 700 (28%)

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 256MB

Amazon.com

Check prices at:

Radeon HD 6450 (OEM)

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 256MB Radeon HD 6450 (OEM)
Manufacturer AMD AMD
Year 2008 February 2011
Code Name RV620 PRO Caicos
Memory 256 MB 512 MB
Core Speed 800 MHz 625 MHz
Memory Speed 1900 MHz 1600 MHz
Power (Max TDP) (Unknown) watts 31 watts
Bandwidth 30400 MB/sec 12800 MB/sec
Texel Rate 3200 Mtexels/sec 5000 Mtexels/sec
Pixel Rate 3200 Mpixels/sec 2500 Mpixels/sec
Unified Shaders 40(8x5) 160
Texture Mapping Units 4 8
Render Output Units 4 4
Bus Type DDR2 GDDR3
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: Memory bandwidth is the maximum amount of information (in units of MB per second) that can be moved past the external memory interface within a second. The number is calculated by multiplying the bus width by the speed of its memory. If the card has DDR RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly record to the local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the number of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on many other factors, especially 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 256MB

Amazon.com

Check prices at:

Radeon HD 6450 (OEM)

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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