GeForce GTX 460 (OEM) vs Radeon R9 390X 8G

Intro

Compare all of that to the Radeon R9 390X 8G, which comes with a core clock speed of 1050 MHz and a GDDR5 memory speed of 1500 MHz. It also uses a 512-bit bus, and makes use of a 28 nm design. It is comprised of 2816 SPUs, 176 TAUs, and 64 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 460 (OEM)		150 Watts
Radeon R9 390X 8G		275 Watts
	Difference: 125 Watts (83%)

Memory Bandwidth

The Radeon R9 390X 8G, in theory, should perform quite a bit faster than the GeForce GTX 460 (OEM) in general. (explain)

Radeon R9 390X 8G		384000 MB/sec
GeForce GTX 460 (OEM)		108800 MB/sec
	Difference: 275200 (253%)

Texel Rate

The Radeon R9 390X 8G will be quite a bit (more or less 408%) faster with regards to AF than the GeForce GTX 460 (OEM). (explain)

Radeon R9 390X 8G		184800 Mtexels/sec
GeForce GTX 460 (OEM)		36400 Mtexels/sec
	Difference: 148400 (408%)

Pixel Rate

The Radeon R9 390X 8G should be much (approximately 223%) faster with regards to FSAA than the GeForce GTX 460 (OEM), and also will be capable of handling higher screen resolutions without slowing down too much. (explain)

Radeon R9 390X 8G		67200 Mpixels/sec
GeForce GTX 460 (OEM)		20800 Mpixels/sec
	Difference: 46400 (223%)

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: Memory bandwidth is the maximum amount of data (counted in MB per second) that can be moved past the external memory interface within a second. It's worked out by multiplying the interface width by the speed of its memory. If it uses DDR memory, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

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