Radeon HD 6870 vs Radeon R7 M265

Intro

Compare those specs to the Radeon R7 M265, which makes use of a 28 nm design. AMD has clocked the core frequency at 725 MHz. The DDR3 RAM runs at a frequency of 1000 MHz on this card. It features 384 SPUs as well as 24 TAUs 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 R7 M265		3256 points
Radeon HD 6870		2870 points
	Difference: 386 (13%)

Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically, the Radeon HD 6870 should be much faster than the Radeon R7 M265 in general. (explain)

Radeon HD 6870		134400 MB/sec
Radeon R7 M265		32000 MB/sec
	Difference: 102400 (320%)

Texel Rate

The Radeon HD 6870 is quite a bit (about 190%) more effective at AF than the Radeon R7 M265. (explain)

Radeon HD 6870		50400 Mtexels/sec
Radeon R7 M265		17400 Mtexels/sec
	Difference: 33000 (190%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the Radeon HD 6870 is a better choice, and very much so. (explain)

Radeon HD 6870		28800 Mpixels/sec
Radeon R7 M265		5800 Mpixels/sec
	Difference: 23000 (397%)

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 (counted in megabytes per second) that can be transported past the external memory interface within a second. It's worked out by multiplying the card's interface width by its memory speed. In the case of DDR type memory, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied per second. This number is calculated by multiplying the total texture units by the core clock speed of the chip. The higher the texel rate, the better the 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 chip could possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the max fill rate.