Radeon R7 250X 2GB vs Radeon R9 270X

Intro

Compare that to the Radeon R9 270X, which has clock speeds of 1000 MHz on the GPU, and 1400 MHz on the 2048 MB of GDDR5 memory. It features 1280 SPUs along with 80 Texture Address Units and 32 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 250X 2GB		95 Watts
Radeon R9 270X		180 Watts
	Difference: 85 Watts (89%)

Memory Bandwidth

The Radeon R9 270X should in theory perform a lot faster than the Radeon R7 250X 2GB in general. (explain)

Radeon R9 270X		179200 MB/sec
Radeon R7 250X 2GB		72000 MB/sec
	Difference: 107200 (149%)

Texel Rate

The Radeon R9 270X will be quite a bit (approximately 100%) better at anisotropic filtering than the Radeon R7 250X 2GB. (explain)

Radeon R9 270X		80000 Mtexels/sec
Radeon R7 250X 2GB		40000 Mtexels/sec
	Difference: 40000 (100%)

Pixel Rate

If running with high levels of AA is important to you, then the Radeon R9 270X is the winner, by a large margin. (explain)

Radeon R9 270X		32000 Mpixels/sec
Radeon R7 250X 2GB		16000 Mpixels/sec
	Difference: 16000 (100%)

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 data (measured in megabytes per second) that can be transferred over the external memory interface within a second. The number is calculated by multiplying the card's interface 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 ANOTHER 2x. The better the card's 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 amount of texture map elements (texels) that can be applied in one second. This figure is worked out by multiplying the total amount of texture units by the core speed of the chip. The better the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly record to its local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the amount of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.