GeForce GTX 285 1GB vs Radeon R9 M265X

Intro

Compare those specifications to the Radeon R9 M265X, which has a core clock speed of 575 MHz and a GDDR5 memory frequency of 1125 MHz. It also makes use of a 128-bit memory bus, and makes use of a 28 nm design. It features 640 SPUs, 40 TAUs, and 16 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

The GeForce GTX 285 1GB, in theory, should be quite a bit faster than the Radeon R9 M265X in general. (explain)

GeForce GTX 285 1GB		158976 MB/sec
Radeon R9 M265X		72000 MB/sec
	Difference: 86976 (121%)

Texel Rate

The GeForce GTX 285 1GB should be much (approximately 125%) more effective at texture filtering than the Radeon R9 M265X. (explain)

GeForce GTX 285 1GB		51840 Mtexels/sec
Radeon R9 M265X		23000 Mtexels/sec
	Difference: 28840 (125%)

Pixel Rate

If running with a high resolution is important to you, then the GeForce GTX 285 1GB is superior to the Radeon R9 M265X, by a large margin. (explain)

GeForce GTX 285 1GB		20736 Mpixels/sec
Radeon R9 M265X		9200 Mpixels/sec
	Difference: 11536 (125%)

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 largest amount of data (in units of megabytes per second) that can be transferred across the external memory interface in one second. It is calculated by multiplying the card's bus width by its memory clock speed. If it uses DDR type memory, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's 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 can be applied in one second. This number is calculated by multiplying the total number of texture units of the card by the core speed of the chip. The higher the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly record to its local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the amount of ROPs by the the core clock speed. 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 output rate also depends on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.