Radeon R7 M265 vs Radeon R9 M265X

Intro

Compare all that to the Radeon R9 M265X, which has GPU clock speed of 575 MHz, and 2048 MB of GDDR5 memory set to run at 1125 MHz through a 128-bit bus. It also features 640 Stream Processors, 40 Texture Address Units, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the Radeon R9 M265X should be a lot faster than the Radeon R7 M265 in general. (explain)

Radeon R9 M265X		72000 MB/sec
Radeon R7 M265		32000 MB/sec
	Difference: 40000 (125%)

Texel Rate

The Radeon R9 M265X is much (approximately 32%) better at anisotropic filtering than the Radeon R7 M265. (explain)

Radeon R9 M265X		23000 Mtexels/sec
Radeon R7 M265		17400 Mtexels/sec
	Difference: 5600 (32%)

Pixel Rate

The Radeon R9 M265X should be much (more or less 59%) more effective at AA than the Radeon R7 M265, and also should be capable of handling higher resolutions more effectively. (explain)

Radeon R9 M265X		9200 Mpixels/sec
Radeon R7 M265		5800 Mpixels/sec
	Difference: 3400 (59%)

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 data (measured in MB per second) that can be moved over the external memory interface in a second. The number is calculated by multiplying the card's bus width by the speed of its memory. If the card has DDR type memory, it 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 anti-aliasing, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly record to the local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the number of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.