Radeon R7 250 vs Radeon R9 M265X

Intro

Compare those specs to the Radeon R9 M265X, which comes with clock speeds of 575 MHz on the GPU, and 1125 MHz on the 2048 MB of GDDR5 memory. It features 640 SPUs along with 40 Texture Address Units and 16 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically speaking, the Radeon R7 250 should be just a bit faster than the Radeon R9 M265X overall. (explain)

Radeon R7 250		73600 MB/sec
Radeon R9 M265X		72000 MB/sec
	Difference: 1600 (2%)

Texel Rate

The Radeon R7 250 will be a bit (more or less 4%) more effective at AF than the Radeon R9 M265X. (explain)

Radeon R7 250		24000 Mtexels/sec
Radeon R9 M265X		23000 Mtexels/sec
	Difference: 1000 (4%)

Pixel Rate

The Radeon R9 M265X will be a bit (more or less 15%) better at full screen anti-aliasing than the Radeon R7 250, and will be able to handle higher resolutions without slowing down too much. (explain)

Radeon R9 M265X		9200 Mpixels/sec
Radeon R7 250		8000 Mpixels/sec
	Difference: 1200 (15%)

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 (in units of MB per second) that can be moved across the external memory interface within a second. It is calculated by multiplying the card's bus width by the speed of its memory. In the case of DDR type memory, the result should be multiplied by 2 again. If 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 amount of texture map elements (texels) that can be applied per second. This number is calculated by multiplying the total amount of texture units of the card by the core clock speed of the chip. The higher this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the most pixels the graphics card can 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 ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). 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.