GeForce GTX 590 vs Radeon R9 M385X

Intro

Compare that to the Radeon R9 M385X, which features GPU clock speed of 1100 MHz, and 4096 MB of GDDR5 memory set to run at 1500 MHz through a 128-bit bus. It also is comprised of 896 SPUs, 56 Texture Address Units, and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically, the GeForce GTX 590 should be quite a bit faster than the Radeon R9 M385X overall. (explain)

GeForce GTX 590		328320 MB/sec
Radeon R9 M385X		96000 MB/sec
	Difference: 232320 (242%)

Texel Rate

The GeForce GTX 590 is quite a bit (more or less 26%) faster with regards to texture filtering than the Radeon R9 M385X. (explain)

GeForce GTX 590		77696 Mtexels/sec
Radeon R9 M385X		61600 Mtexels/sec
	Difference: 16096 (26%)

Pixel Rate

The GeForce GTX 590 is quite a bit (about 231%) faster with regards to FSAA than the Radeon R9 M385X, and able to handle higher screen resolutions without slowing down too much. (explain)

GeForce GTX 590		58272 Mpixels/sec
Radeon R9 M385X		17600 Mpixels/sec
	Difference: 40672 (231%)

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.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

Specifications

Memory Bandwidth: Memory bandwidth is the maximum amount of data (in units of megabytes per second) that can be transferred across the external memory interface in a second. It's calculated by multiplying the interface width by its memory speed. If it uses DDR RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better 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 amount of texture map elements (texels) that can be processed in one second. This figure is worked out by multiplying the total amount of texture units by the core speed of the chip. The better this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly write to the local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.