Radeon HD 7970 vs Radeon R7 M265

Intro

Compare that to the Radeon R7 M265, which comes with a clock frequency of 725 MHz and a DDR3 memory frequency of 1000 MHz. It also features a 128-bit bus, and makes use of a 28 nm design. It is made up of 384 SPUs, 24 Texture Address Units, and 8 ROPs.

Display Graphs

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Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

3DMark Fire Strike Graphics Score

Radeon HD 7970		8225 points
Radeon R7 M265		3256 points
	Difference: 4969 (153%)

Ethereum Mining Hash Rate

Radeon HD 7970		21 Mh/s
Radeon R7 M265		14 Mh/s
	Difference: 7 (50%)

Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically speaking, the Radeon HD 7970 should be 725% quicker than the Radeon R7 M265 in general, due to its greater bandwidth. (explain)

Radeon HD 7970		264000 MB/sec
Radeon R7 M265		32000 MB/sec
	Difference: 232000 (725%)

Texel Rate

The Radeon HD 7970 should be quite a bit (approximately 580%) more effective at anisotropic filtering than the Radeon R7 M265. (explain)

Radeon HD 7970		118400 Mtexels/sec
Radeon R7 M265		17400 Mtexels/sec
	Difference: 101000 (580%)

Pixel Rate

If running with a high resolution is important to you, then the Radeon HD 7970 is the winner, by a large margin. (explain)

Radeon HD 7970		29600 Mpixels/sec
Radeon R7 M265		5800 Mpixels/sec
	Difference: 23800 (410%)

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 data (counted in MB per second) that can be transported past the external memory interface within a second. It is calculated by multiplying the interface width by its memory clock speed. If it uses DDR memory, it should be multiplied by 2 again. If it uses 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 high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied per second. This is worked out by multiplying the total number of texture units by the core 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 applied in one second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card could possibly record to the local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also 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 of the card - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.