GeForce GTX 970 vs Radeon R9 M380

Intro

Compare that to the Radeon R9 M380, which features core speeds of 1000 MHz on the GPU, and 1500 MHz on the 4096 MB of GDDR5 memory. It features 640 SPUs as well as 40 Texture Address Units and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the GeForce GTX 970 should perform much faster than the Radeon R9 M380 overall. (explain)

GeForce GTX 970		224000 MB/sec
Radeon R9 M380		96000 MB/sec
	Difference: 128000 (133%)

Texel Rate

The GeForce GTX 970 is much (more or less 173%) faster with regards to AF than the Radeon R9 M380. (explain)

GeForce GTX 970		109200 Mtexels/sec
Radeon R9 M380		40000 Mtexels/sec
	Difference: 69200 (173%)

Pixel Rate

The GeForce GTX 970 should be much (more or less 320%) better at full screen anti-aliasing than the Radeon R9 M380, and also should be able to handle higher screen resolutions while still performing well. (explain)

GeForce GTX 970		67200 Mpixels/sec
Radeon R9 M380		16000 Mpixels/sec
	Difference: 51200 (320%)

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 maximum amount of information (counted in MB per second) that can be transported past the external memory interface in a second. It is calculated by multiplying the card's bus width by its memory speed. If it uses DDR RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied in one second. This is calculated by multiplying the total texture units of the card 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 in a second.

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