Radeon HD 4670 512MB vs Radeon R9 M280X

Intro

Compare those specs to the Radeon R9 M280X, which makes use of a 28 nm design. AMD has set the core frequency at 900 MHz. The GDDR5 memory runs at a speed of 1375 MHz on this particular model. It features 896 SPUs as well as 56 TAUs and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4670 512MB		70 Watts
Radeon R9 M280X		75 Watts
	Difference: 5 Watts (7%)

Memory Bandwidth

The Radeon R9 M280X, in theory, should be quite a bit faster than the Radeon HD 4670 512MB overall. (explain)

Radeon R9 M280X		88000 MB/sec
Radeon HD 4670 512MB		32000 MB/sec
	Difference: 56000 (175%)

Texel Rate

The Radeon R9 M280X will be quite a bit (more or less 110%) faster with regards to AF than the Radeon HD 4670 512MB. (explain)

Radeon R9 M280X		50400 Mtexels/sec
Radeon HD 4670 512MB		24000 Mtexels/sec
	Difference: 26400 (110%)

Pixel Rate

If running with a high screen resolution is important to you, then the Radeon R9 M280X is superior to the Radeon HD 4670 512MB, by far. (explain)

Radeon R9 M280X		14400 Mpixels/sec
Radeon HD 4670 512MB		6000 Mpixels/sec
	Difference: 8400 (140%)

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: Bandwidth is the maximum amount of information (counted in megabytes per second) that can be moved past the external memory interface within a second. It is calculated by multiplying the bus width by its memory speed. If the card has DDR RAM, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly record to its local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Render Output Units 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, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.