Radeon R7 260X vs Radeon R9 M280X

Intro

Compare all that to the Radeon R9 M280X, which features GPU clock speed of 900 MHz, and 4096 MB of GDDR5 RAM set to run at 1375 MHz through a 128-bit bus. It also is comprised of 896 Stream Processors, 56 Texture Address Units, and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 M280X		75 Watts
Radeon R7 260X		115 Watts
	Difference: 40 Watts (53%)

Memory Bandwidth

The Radeon R7 260X should in theory be a small bit faster than the Radeon R9 M280X in general. (explain)

Radeon R7 260X		104000 MB/sec
Radeon R9 M280X		88000 MB/sec
	Difference: 16000 (18%)

Texel Rate

The Radeon R7 260X will be a lot (more or less 22%) more effective at AF than the Radeon R9 M280X. (explain)

Radeon R7 260X		61600 Mtexels/sec
Radeon R9 M280X		50400 Mtexels/sec
	Difference: 11200 (22%)

Pixel Rate

The Radeon R7 260X should be much (approximately 22%) better at full screen anti-aliasing than the Radeon R9 M280X, and also able to handle higher resolutions while still performing well. (explain)

Radeon R7 260X		17600 Mpixels/sec
Radeon R9 M280X		14400 Mpixels/sec
	Difference: 3200 (22%)

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 maximum amount of information (in units of megabytes per second) that can be moved past the external memory interface in one second. It's calculated by multiplying the card's bus width by its memory clock speed. If the card has DDR RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, 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 texture map elements (texels) that can be processed 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 better this number, 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 maximum number of pixels the graphics card can possibly record to the local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the amount of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the max fill rate.