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Radeon HD 4730 vs Radeon HD 6670 (OEM)

Intro

The Radeon HD 4730 has a GPU core clock speed of 700 MHz, and the 512 MB of GDDR5 memory is set to run at 900 MHz through a 128-bit bus. It also is made up of 640(128x5) Stream Processors, 32 Texture Address Units, and 8 Raster Operation Units.

Compare all of that to the Radeon HD 6670 (OEM), which features core speeds of 800 MHz on the GPU, and 1000 MHz on the 512 MB of GDDR5 memory. It features 480 SPUs along with 24 Texture Address Units and 8 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6670 (OEM) 63 Watts
Radeon HD 4730 140 Watts
Difference: 77 Watts (122%)

Memory Bandwidth

As far as performance goes, the Radeon HD 6670 (OEM) should theoretically be a small bit better than the Radeon HD 4730 in general. (explain)

Radeon HD 6670 (OEM) 64000 MB/sec
Radeon HD 4730 57600 MB/sec
Difference: 6400 (11%)

Texel Rate

The Radeon HD 4730 will be just a bit (approximately 17%) better at anisotropic filtering than the Radeon HD 6670 (OEM). (explain)

Radeon HD 4730 22400 Mtexels/sec
Radeon HD 6670 (OEM) 19200 Mtexels/sec
Difference: 3200 (17%)

Pixel Rate

The Radeon HD 6670 (OEM) should be a bit (approximately 14%) more effective at FSAA than the Radeon HD 4730, and will be capable of handling higher screen resolutions better. (explain)

Radeon HD 6670 (OEM) 6400 Mpixels/sec
Radeon HD 4730 5600 Mpixels/sec
Difference: 800 (14%)

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 4730

Amazon.com

Check prices at:

Radeon HD 6670 (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 4730 Radeon HD 6670 (OEM)
Manufacturer AMD AMD
Year Jun 8, 2009 February 2011
Code Name RV770/CE Turks
Memory 512 MB 512 MB
Core Speed 700 MHz 800 MHz
Memory Speed 3600 MHz 4000 MHz
Power (Max TDP) 140 watts 63 watts
Bandwidth 57600 MB/sec 64000 MB/sec
Texel Rate 22400 Mtexels/sec 19200 Mtexels/sec
Pixel Rate 5600 Mpixels/sec 6400 Mpixels/sec
Unified Shaders 640(128x5) 480
Texture Mapping Units 32 24
Render Output Units 8 8
Bus Type GDDR5 GDDR5
Bus Width 128-bit 128-bit
Fab Process 55 nm 40 nm
Transistors 956 million 715 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 data (measured in megabytes per second) that can be transferred across the external memory interface within a second. The number is calculated by multiplying the interface width by the speed of its memory. In the case of DDR type memory, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster the card will be in general. It especially helps with AA, 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 number is calculated by multiplying the total texture units by the core clock 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 in one second.

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly record to the local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.

Display Prices

Hide Prices

Radeon HD 4730

Amazon.com

Check prices at:

Radeon HD 6670 (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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