GeForce GTX 470 vs Radeon R7 250X 2GB

Intro

Compare that to the Radeon R7 250X 2GB, which uses a 28 nm design. AMD has set the core frequency at 1000 MHz. The GDDR5 memory works at a speed of 1125 MHz on this card. It features 640 SPUs as well as 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 470		215 Watts
	Difference: 120 Watts (126%)

Memory Bandwidth

Theoretically, the GeForce GTX 470 should be a lot faster than the Radeon R7 250X 2GB overall. (explain)

GeForce GTX 470		133920 MB/sec
Radeon R7 250X 2GB		72000 MB/sec
	Difference: 61920 (86%)

Texel Rate

The Radeon R7 250X 2GB should be a little bit (about 18%) better at anisotropic filtering than the GeForce GTX 470. (explain)

Radeon R7 250X 2GB		40000 Mtexels/sec
GeForce GTX 470		33992 Mtexels/sec
	Difference: 6008 (18%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the GeForce GTX 470 is a better choice, and very much so. (explain)

GeForce GTX 470		24280 Mpixels/sec
Radeon R7 250X 2GB		16000 Mpixels/sec
	Difference: 8280 (52%)

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 information (measured in MB per second) that can be moved across the external memory interface within a second. It's worked out by multiplying the bus width by its memory clock speed. If the card has DDR memory, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly record to its local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.