GeForce GTX 285 1GB vs Radeon R9 M395X

Intro

Compare those specifications to the Radeon R9 M395X, which features core 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 M395X		125 Watts
GeForce GTX 285 1GB		204 Watts
	Difference: 79 Watts (63%)

Memory Bandwidth

The Radeon R9 M395X should in theory perform just a 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 will be a lot (more or less 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

The Radeon R9 M395X is a little bit (approximately 12%) better at full screen anti-aliasing than the GeForce GTX 285 1GB, and also capable of handling higher screen resolutions more effectively. (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: Memory bandwidth is the max amount of data (measured in MB per second) that can be moved past the external memory interface in one second. It is worked out by multiplying the bus width by the speed of its memory. If the card has DDR type memory, the result should be multiplied by 2 once 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 anti-aliasing, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly record to the local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the amount of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.