GeForce GTX 470 vs Radeon R9 M390X

Intro

Compare that to the Radeon R9 M390X, which has clock speeds of 723 MHz on the GPU, and 1250 MHz on the 4096 MB of GDDR5 RAM. It features 2048 SPUs as well as 128 Texture Address Units and 32 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 M390X		125 Watts
GeForce GTX 470		215 Watts
	Difference: 90 Watts (72%)

Memory Bandwidth

Theoretically speaking, the Radeon R9 M390X should perform a little bit faster than the GeForce GTX 470 overall. (explain)

Radeon R9 M390X		160000 MB/sec
GeForce GTX 470		133920 MB/sec
	Difference: 26080 (19%)

Texel Rate

The Radeon R9 M390X will be quite a bit (about 172%) more effective at texture filtering than the GeForce GTX 470. (explain)

Radeon R9 M390X		92544 Mtexels/sec
GeForce GTX 470		33992 Mtexels/sec
	Difference: 58552 (172%)

Pixel Rate

The GeForce GTX 470 should be a little bit (more or less 5%) faster with regards to anti-aliasing than the Radeon R9 M390X, and also able to handle higher resolutions better. (explain)

GeForce GTX 470		24280 Mpixels/sec
Radeon R9 M390X		23136 Mpixels/sec
	Difference: 1144 (5%)

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 megabytes per second) that can be transported over the external memory interface in one second. The number is worked out by multiplying the bus width by its memory speed. In the case of DDR type RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster 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 number of texture map elements (texels) that are processed per second. This number is calculated by multiplying the total amount of texture units of the card by the core speed of the chip. The higher the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly record to its local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.