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

Intro

The Radeon HD 4830 512MB comes with core speeds of 575 MHz on the GPU, and 900 MHz on the 512 MB of GDDR3 RAM. It features 640(128x5) SPUs along with 32 Texture Address Units and 16 ROPs.

Compare those specifications to the Radeon HD 6670 (OEM), which features 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

Theoretically speaking, the Radeon HD 6670 (OEM) is 11% quicker than the Radeon HD 4830 512MB overall, due to its greater bandwidth. (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) will be a bit (more or less 4%) more effective at 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 should be much (more or less 44%) more effective at anti-aliasing than the Radeon HD 6670 (OEM), and should be capable of handling higher screen resolutions more effectively. (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 maximum amount of information (counted in MB per second) that can be transported over the external memory interface within a second. It's worked out by multiplying the interface width by the speed of its memory. If the card has DDR RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better 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 applied per second. This is worked out by multiplying the total amount of texture units of the card by the core speed of the chip. The higher this number, the better the graphics 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 maximum number of pixels the graphics card can possibly write to the local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output 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 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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