GeForce GTX 285 1GB vs Radeon R7 250X 2GB

Intro

Compare those specifications to the Radeon R7 250X 2GB, which comes with a core clock frequency of 1000 MHz and a GDDR5 memory speed of 1125 MHz. It also uses a 128-bit bus, and uses a 28 nm design. It is comprised 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 285 1GB		204 Watts
	Difference: 109 Watts (115%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 285 1GB should be 121% faster than the Radeon R7 250X 2GB overall, because of its higher bandwidth. (explain)

GeForce GTX 285 1GB		158976 MB/sec
Radeon R7 250X 2GB		72000 MB/sec
	Difference: 86976 (121%)

Texel Rate

The GeForce GTX 285 1GB is a lot (more or less 30%) faster with regards to texture filtering than the Radeon R7 250X 2GB. (explain)

GeForce GTX 285 1GB		51840 Mtexels/sec
Radeon R7 250X 2GB		40000 Mtexels/sec
	Difference: 11840 (30%)

Pixel Rate

If using a high screen resolution is important to you, then the GeForce GTX 285 1GB is superior to the Radeon R7 250X 2GB, by far. (explain)

GeForce GTX 285 1GB		20736 Mpixels/sec
Radeon R7 250X 2GB		16000 Mpixels/sec
	Difference: 4736 (30%)

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 largest amount of data (counted in MB per second) that can be moved across the external memory interface in a second. It is worked out by multiplying the interface width by the speed of its memory. If the card has DDR type RAM, it should 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, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed per second. This is worked out by multiplying the total 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 in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card can possibly write to its local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of Raster Operations Pipelines 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 rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.