Radeon R7 250 vs Radeon R9 M280X

Intro

Compare that to the Radeon R9 M280X, which comes with a clock frequency of 900 MHz and a GDDR5 memory frequency of 1375 MHz. It also features a 128-bit memory bus, and uses a 28 nm design. It features 896 SPUs, 56 TAUs, and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 250		65 Watts
Radeon R9 M280X		75 Watts
	Difference: 10 Watts (15%)

Memory Bandwidth

The Radeon R9 M280X should in theory be a bit faster than the Radeon R7 250 overall. (explain)

Radeon R9 M280X		88000 MB/sec
Radeon R7 250		73600 MB/sec
	Difference: 14400 (20%)

Texel Rate

The Radeon R9 M280X should be a lot (approximately 110%) faster with regards to texture filtering than the Radeon R7 250. (explain)

Radeon R9 M280X		50400 Mtexels/sec
Radeon R7 250		24000 Mtexels/sec
	Difference: 26400 (110%)

Pixel Rate

If running with high levels of AA is important to you, then the Radeon R9 M280X is superior to the Radeon R7 250, by far. (explain)

Radeon R9 M280X		14400 Mpixels/sec
Radeon R7 250		8000 Mpixels/sec
	Difference: 6400 (80%)

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 max amount of information (in units of MB per second) that can be transferred past the external memory interface within a second. The number is worked out by multiplying the interface width by its memory speed. If the card has DDR memory, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed per second. This figure 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 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 maximum number of pixels that the graphics card could possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called 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 - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.