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Radeon HD 4830 512MB vs Radeon HD 6670 (OEM)

Intro

The Radeon HD 4830 512MB has a core clock frequency of 575 MHz and a GDDR3 memory speed of 900 MHz. It also uses a 256-bit bus, and uses a 55 nm design. It is made up of 640(128x5) SPUs, 32 Texture Address Units, and 16 Raster Operation Units.

Compare those specifications to the Radeon HD 6670 (OEM), which comes with core clock speeds of 800 MHz on the GPU, and 1000 MHz on the 512 MB of GDDR5 memory. It features 480 SPUs along with 24 TAUs and 8 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6670 (OEM) 63 Watts
Radeon HD 4830 512MB 95 Watts
Difference: 32 Watts (51%)

Memory Bandwidth

As far as performance goes, the Radeon HD 6670 (OEM) should in theory be a bit superior to the Radeon HD 4830 512MB overall. (explain)

Radeon HD 6670 (OEM) 64000 MB/sec
Radeon HD 4830 512MB 57600 MB/sec
Difference: 6400 (11%)

Texel Rate

The Radeon HD 6670 (OEM) should be a little bit (approximately 4%) faster with regards to anisotropic filtering than the Radeon HD 4830 512MB. (explain)

Radeon HD 6670 (OEM) 19200 Mtexels/sec
Radeon HD 4830 512MB 18400 Mtexels/sec
Difference: 800 (4%)

Pixel Rate

The Radeon HD 4830 512MB is much (more or less 44%) better at FSAA than the Radeon HD 6670 (OEM), and also will be capable of handling higher screen resolutions without losing too much performance. (explain)

Radeon HD 4830 512MB 9200 Mpixels/sec
Radeon HD 6670 (OEM) 6400 Mpixels/sec
Difference: 2800 (44%)

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 4830 512MB

Amazon.com

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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 4830 512MB Radeon HD 6670 (OEM)
Manufacturer AMD AMD
Year Oct 21, 2008 February 2011
Code Name RV770 LE Turks
Memory 512 MB 512 MB
Core Speed 575 MHz 800 MHz
Memory Speed 1800 MHz 4000 MHz
Power (Max TDP) 95 watts 63 watts
Bandwidth 57600 MB/sec 64000 MB/sec
Texel Rate 18400 Mtexels/sec 19200 Mtexels/sec
Pixel Rate 9200 Mpixels/sec 6400 Mpixels/sec
Unified Shaders 640(128x5) 480
Texture Mapping Units 32 24
Render Output Units 16 8
Bus Type GDDR3 GDDR5
Bus Width 256-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 largest amount of data (in units of megabytes per second) that can be transported over the external memory interface in a second. The number is calculated by multiplying the bus width by its memory speed. If the card has DDR type memory, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the faster 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 texture map elements (texels) that can be processed per second. This figure is worked out by multiplying the total texture units of the card by the core clock speed of the chip. The better the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly record to its local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the number of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the max fill rate.

Display Prices

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Radeon HD 4830 512MB

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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