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

Intro

Compare all that to the Radeon R7 250X 2GB, which makes use of a 28 nm design. AMD has set the core speed at 1000 MHz. The GDDR5 RAM is set to run at a speed of 1125 MHz on this specific card. It features 640 SPUs along with 40 Texture Address Units and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 250X 2GB		95 Watts
GeForce GTX 285 2GB		204 Watts
	Difference: 109 Watts (115%)

Memory Bandwidth

The GeForce GTX 285 2GB should in theory be quite a bit faster than the Radeon R7 250X 2GB overall. (explain)

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

Texel Rate

The GeForce GTX 285 2GB will be a lot (more or less 30%) better at anisotropic filtering than the Radeon R7 250X 2GB. (explain)

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

Pixel Rate

The GeForce GTX 285 2GB will be much (more or less 30%) faster with regards to FSAA than the Radeon R7 250X 2GB, and should be capable of handling higher resolutions more effectively. (explain)

GeForce GTX 285 2GB		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 past the external memory interface in one second. It's worked out by multiplying the card's interface width by its memory speed. If it uses DDR RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed per second. This figure is calculated by multiplying the total number of texture units by the core clock speed of the chip. The higher the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly write to the local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends 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.