GeForce GTX 285 1GB vs Radeon R9 M395X

Intro

Compare all that to the Radeon R9 M395X, which features a clock speed of 723 MHz and a GDDR5 memory speed of 1250 MHz. It also uses a 256-bit bus, and uses a 28 nm design. It is made up of 2048 SPUs, 128 Texture Address Units, and 32 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 M395X		125 Watts
GeForce GTX 285 1GB		204 Watts
	Difference: 79 Watts (63%)

Memory Bandwidth

Theoretically, the Radeon R9 M395X should be a little bit faster than the GeForce GTX 285 1GB overall. (explain)

Radeon R9 M395X		160000 MB/sec
GeForce GTX 285 1GB		158976 MB/sec
	Difference: 1024 (1%)

Texel Rate

The Radeon R9 M395X should be much (approximately 79%) faster with regards to anisotropic filtering than the GeForce GTX 285 1GB. (explain)

Radeon R9 M395X		92544 Mtexels/sec
GeForce GTX 285 1GB		51840 Mtexels/sec
	Difference: 40704 (79%)

Pixel Rate

If running with high levels of AA is important to you, then the Radeon R9 M395X is a better choice, but it probably won't make a huge difference. (explain)

Radeon R9 M395X		23136 Mpixels/sec
GeForce GTX 285 1GB		20736 Mpixels/sec
	Difference: 2400 (12%)

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

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly record to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of colour ROPs by the clock speed of the card. 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 fill rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.