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

Intro

The Radeon HD 4830 512MB uses a 55 nm design. AMD has set the core speed at 575 MHz. The GDDR3 RAM works at a speed of 900 MHz on this particular model. It features 640(128x5) SPUs along with 32 Texture Address Units and 16 Rasterization Operator Units.

Compare all of that to the Radeon HD 6670 (OEM), which uses a 40 nm design. AMD has set the core speed at 800 MHz. The GDDR5 memory runs at a frequency of 1000 MHz on this card. It features 480 SPUs as well as 24 TAUs 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 4830 512MB 95 Watts
Difference: 32 Watts (51%)

Memory Bandwidth

Performance-wise, the Radeon HD 6670 (OEM) should in theory be just a bit superior to the Radeon HD 4830 512MB in general. (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) is a small 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

If using lots of anti-aliasing is important to you, then the Radeon HD 4830 512MB is a better choice, by a large margin. (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

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 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 maximum amount of information (measured in MB per second) that can be transferred across the external memory interface in one second. It is worked out by multiplying the interface width by the speed of its memory. If the card has DDR type RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied in one second. This figure is calculated by multiplying the total amount of texture units by the core clock speed of the chip. The better this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount 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 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 memory bandwidth is, the lower the potential to get to the max fill rate.

Display Prices

Hide Prices

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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