Radeon R7 M265 vs Radeon R9 M290X

Intro

Compare all of that to the Radeon R9 M290X, which features clock speeds of 850 MHz on the GPU, and 1200 MHz on the 4096 MB of GDDR5 RAM. It features 1280 SPUs along with 80 TAUs and 32 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

The Radeon R9 M290X should theoretically perform a lot faster than the Radeon R7 M265 overall. (explain)

Radeon R9 M290X		153600 MB/sec
Radeon R7 M265		32000 MB/sec
	Difference: 121600 (380%)

Texel Rate

The Radeon R9 M290X will be quite a bit (about 291%) better at anisotropic filtering than the Radeon R7 M265. (explain)

Radeon R9 M290X		68000 Mtexels/sec
Radeon R7 M265		17400 Mtexels/sec
	Difference: 50600 (291%)

Pixel Rate

If running with a high screen resolution is important to you, then the Radeon R9 M290X is the winner, by far. (explain)

Radeon R9 M290X		27200 Mpixels/sec
Radeon R7 M265		5800 Mpixels/sec
	Difference: 21400 (369%)

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 data (measured in MB per second) that can be moved past the external memory interface within a second. It's worked out by multiplying the interface width by its memory speed. If it uses DDR type RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, 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 amount of texture map elements (texels) that can be processed in one second. This is calculated by multiplying the total amount of texture units by the core clock speed of the chip. The better this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly write to its local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount 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 drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.