Radeon HD 4670 1GB vs Radeon R9 M280X

Intro

Compare all that to the Radeon R9 M280X, which uses a 28 nm design. AMD has set the core speed at 900 MHz. The GDDR5 memory is set to run at a frequency of 1375 MHz on this particular model. It features 896 SPUs along with 56 TAUs and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4670 1GB		70 Watts
Radeon R9 M280X		75 Watts
	Difference: 5 Watts (7%)

Memory Bandwidth

As far as performance goes, the Radeon R9 M280X should in theory be a lot superior to the Radeon HD 4670 1GB overall. (explain)

Radeon R9 M280X		88000 MB/sec
Radeon HD 4670 1GB		35200 MB/sec
	Difference: 52800 (150%)

Texel Rate

The Radeon R9 M280X should be quite a bit (about 110%) faster with regards to texture filtering than the Radeon HD 4670 1GB. (explain)

Radeon R9 M280X		50400 Mtexels/sec
Radeon HD 4670 1GB		24000 Mtexels/sec
	Difference: 26400 (110%)

Pixel Rate

If using a high resolution is important to you, then the Radeon R9 M280X is a better choice, by far. (explain)

Radeon R9 M280X		14400 Mpixels/sec
Radeon HD 4670 1GB		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: Memory bandwidth is the max amount of information (measured in MB per second) that can be transferred past the external memory interface within a second. It is worked out by multiplying the interface width by its memory speed. If it uses DDR RAM, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better 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 can be applied per second. This number is calculated by multiplying the total number of texture units of the card by the core speed of the chip. The higher this number, the better the video card will be at 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 that the graphics chip can possibly record to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called 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 - the lower the bandwidth is, the lower the potential to reach the max fill rate.