Radeon HD 6790 vs Radeon R7 M265

Intro

Compare those specs to the Radeon R7 M265, which makes use of a 28 nm design. AMD has set the core speed at 725 MHz. The DDR3 RAM works at a frequency of 1000 MHz on this specific 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 6790		2150 points
	Difference: 1106 (51%)

Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically speaking, the Radeon HD 6790 will be 320% quicker than the Radeon R7 M265 overall, because of its higher bandwidth. (explain)

Radeon HD 6790		134400 MB/sec
Radeon R7 M265		32000 MB/sec
	Difference: 102400 (320%)

Texel Rate

The Radeon HD 6790 should be quite a bit (more or less 93%) better at AF than the Radeon R7 M265. (explain)

Radeon HD 6790		33600 Mtexels/sec
Radeon R7 M265		17400 Mtexels/sec
	Difference: 16200 (93%)

Pixel Rate

The Radeon HD 6790 is much (about 132%) better at full screen anti-aliasing than the Radeon R7 M265, and should be able to handle higher screen resolutions without losing too much performance. (explain)

Radeon HD 6790		13440 Mpixels/sec
Radeon R7 M265		5800 Mpixels/sec
	Difference: 7640 (132%)

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 max amount of information (counted in MB per second) that can be transported across the external memory interface in a second. It is worked out by multiplying the card's interface width by its memory clock speed. If the card has DDR type RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed per second. This is calculated 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 most pixels the graphics card can possibly record to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the amount of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.