Radeon HD 4670 1GB vs Radeon HD 5970

Intro

Compare those specs to the Radeon HD 5970, which comes with core speeds of 725 MHz on the GPU, and 1000 MHz on the 1024 MB of GDDR5 memory. It features 1600 SPUs along with 160 TAUs and 64 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4670 1GB		70 Watts
Radeon HD 5970		294 Watts
	Difference: 224 Watts (320%)

Memory Bandwidth

As far as performance goes, the Radeon HD 5970 should theoretically be quite a bit superior to the Radeon HD 4670 1GB overall. (explain)

Radeon HD 5970		256000 MB/sec
Radeon HD 4670 1GB		35200 MB/sec
	Difference: 220800 (627%)

Texel Rate

The Radeon HD 5970 should be a lot (approximately 867%) better at texture filtering than the Radeon HD 4670 1GB. (explain)

Radeon HD 5970		232000 Mtexels/sec
Radeon HD 4670 1GB		24000 Mtexels/sec
	Difference: 208000 (867%)

Pixel Rate

The Radeon HD 5970 will be a lot (more or less 1447%) faster with regards to full screen anti-aliasing than the Radeon HD 4670 1GB, and also should be capable of handling higher screen resolutions without losing too much performance. (explain)

Radeon HD 5970		92800 Mpixels/sec
Radeon HD 4670 1GB		6000 Mpixels/sec
	Difference: 86800 (1447%)

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.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

Specifications

Memory Bandwidth: Bandwidth is the max amount of data (in units of megabytes per second) that can be moved over the external memory interface within a second. It is worked out by multiplying the card's bus width by its memory clock speed. If it uses DDR type RAM, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed per second. This number is calculated by multiplying the total amount of texture units by the core speed of the chip. The higher the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly record to the local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the amount of colour ROPs by the the card's 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 fill rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.