GeForce GTX 480 vs Radeon R7 250X 2GB

Intro

Compare those specifications to the Radeon R7 250X 2GB, which comes with a clock speed of 1000 MHz and a GDDR5 memory speed of 1125 MHz. It also features a 128-bit bus, and makes use of a 28 nm design. It is made up of 640 SPUs, 40 Texture Address Units, and 16 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 250X 2GB		95 Watts
GeForce GTX 480		250 Watts
	Difference: 155 Watts (163%)

Memory Bandwidth

The GeForce GTX 480 should theoretically be quite a bit faster than the Radeon R7 250X 2GB overall. (explain)

GeForce GTX 480		177408 MB/sec
Radeon R7 250X 2GB		72000 MB/sec
	Difference: 105408 (146%)

Texel Rate

The GeForce GTX 480 should be just a bit (more or less 5%) faster with regards to anisotropic filtering than the Radeon R7 250X 2GB. (explain)

GeForce GTX 480		42000 Mtexels/sec
Radeon R7 250X 2GB		40000 Mtexels/sec
	Difference: 2000 (5%)

Pixel Rate

If using a high screen resolution is important to you, then the GeForce GTX 480 is the winner, and very much so. (explain)

GeForce GTX 480		33600 Mpixels/sec
Radeon R7 250X 2GB		16000 Mpixels/sec
	Difference: 17600 (110%)

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 (in units of MB per second) that can be transported past the external memory interface in one second. It's calculated by multiplying the bus width by its memory speed. If it uses DDR type memory, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied per second. This is worked out by multiplying the total number of texture units of the card by the core speed of the chip. The better the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly write to the local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the max fill rate.