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Radeon HD 3470 256MB vs Radeon HD 6450 (OEM) 1GB

Intro

The Radeon HD 3470 256MB makes use of a 55 nm design. AMD has clocked the core frequency at 800 MHz. The DDR2 RAM runs at a speed of 950 MHz on this card. It features 40(8x5) SPUs along with 4 TAUs and 4 Rasterization Operator Units.

Compare those specifications to the Radeon HD 6450 (OEM) 1GB, which features GPU core speed of 750 MHz, and 1024 MB of GDDR5 memory running at 900 MHz through a 64-bit bus. It also features 160 Stream Processors, 8 TAUs, and 4 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

The Radeon HD 3470 256MB should theoretically perform a little bit faster than the Radeon HD 6450 (OEM) 1GB in general. (explain)

Radeon HD 3470 256MB 30400 MB/sec
Radeon HD 6450 (OEM) 1GB 28800 MB/sec
Difference: 1600 (6%)

Texel Rate

The Radeon HD 6450 (OEM) 1GB will be a lot (more or less 88%) faster with regards to texture filtering than the Radeon HD 3470 256MB. (explain)

Radeon HD 6450 (OEM) 1GB 6000 Mtexels/sec
Radeon HD 3470 256MB 3200 Mtexels/sec
Difference: 2800 (88%)

Pixel Rate

The Radeon HD 3470 256MB should be a little bit (approximately 7%) better at FSAA than the Radeon HD 6450 (OEM) 1GB, and also able to handle higher resolutions without slowing down too much. (explain)

Radeon HD 3470 256MB 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 256MB

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 256MB Radeon HD 6450 (OEM) 1GB
Manufacturer AMD AMD
Year 2008 February 2011
Code Name RV620 PRO Caicos
Memory 256 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 DDR2 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: Memory bandwidth is the maximum amount of information (counted in 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 its memory clock speed. If it uses DDR memory, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the memory bandwidth, 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 amount of texture map elements (texels) that are processed per second. This number is worked out by multiplying the total amount of texture units of the card by the core clock speed of the chip. The better this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly write to its local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.

Display Prices

Hide Prices

Radeon HD 3470 256MB

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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