Radeon HD 4670 512MB vs Radeon R9 280X

Intro

Compare those specs to the Radeon R9 280X, which makes use of a 28 nm design. AMD has set the core frequency at 850 MHz. The GDDR5 memory is set to run at a frequency of 1500 MHz on this specific model. It features 2048 SPUs as well as 128 TAUs and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4670 512MB		70 Watts
Radeon R9 280X		250 Watts
	Difference: 180 Watts (257%)

Memory Bandwidth

Performance-wise, the Radeon R9 280X should theoretically be a lot superior to the Radeon HD 4670 512MB in general. (explain)

Radeon R9 280X		288000 MB/sec
Radeon HD 4670 512MB		32000 MB/sec
	Difference: 256000 (800%)

Texel Rate

The Radeon R9 280X is much (more or less 353%) better at texture filtering than the Radeon HD 4670 512MB. (explain)

Radeon R9 280X		108800 Mtexels/sec
Radeon HD 4670 512MB		24000 Mtexels/sec
	Difference: 84800 (353%)

Pixel Rate

The Radeon R9 280X will be a lot (about 353%) better at full screen anti-aliasing than the Radeon HD 4670 512MB, and also capable of handling higher screen resolutions without slowing down too much. (explain)

Radeon R9 280X		27200 Mpixels/sec
Radeon HD 4670 512MB		6000 Mpixels/sec
	Difference: 21200 (353%)

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

Specifications

Memory Bandwidth: Memory bandwidth is the largest amount of data (measured in megabytes per second) that can be transported across the external memory interface in a second. It's worked out by multiplying the card's bus width by the speed of its memory. If it uses DDR type memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's 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 applied per second. This figure is calculated by multiplying the total number of texture units of the card by the core clock speed of the chip. The higher 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 maximum amount of pixels that the graphics card can possibly record to its local memory per second - measured in millions of pixels per second. The figure is calculated 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 filling the screen with pixels (the image). The actual pixel rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.