Radeon HD 4670 1GB vs Radeon R7 M265

Intro

Compare those specifications to the Radeon R7 M265, which has core clock speeds of 725 MHz on the GPU, and 1000 MHz on the 2048 MB of DDR3 RAM. It features 384 SPUs as well as 24 Texture Address Units and 8 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically speaking, the Radeon HD 4670 1GB should perform a bit faster than the Radeon R7 M265 overall. (explain)

Radeon HD 4670 1GB		35200 MB/sec
Radeon R7 M265		32000 MB/sec
	Difference: 3200 (10%)

Texel Rate

The Radeon HD 4670 1GB should be quite a bit (more or less 38%) more effective at anisotropic filtering than the Radeon R7 M265. (explain)

Radeon HD 4670 1GB		24000 Mtexels/sec
Radeon R7 M265		17400 Mtexels/sec
	Difference: 6600 (38%)

Pixel Rate

If running with high levels of AA is important to you, then the Radeon HD 4670 1GB is superior to the Radeon R7 M265, but not by far. (explain)

Radeon HD 4670 1GB		6000 Mpixels/sec
Radeon R7 M265		5800 Mpixels/sec
	Difference: 200 (3%)

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 largest amount of information (measured in megabytes per second) that can be moved over the external memory interface in a second. It is worked out by multiplying the card's interface width by the speed of its memory. If the card has DDR type RAM, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.