GeForce GTX 285 1GB vs Radeon R9 M265X

Intro

Compare those specs to the Radeon R9 M265X, which features core speeds of 575 MHz on the GPU, and 1125 MHz on the 2048 MB of GDDR5 memory. It features 640 SPUs as well as 40 Texture Address Units and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically speaking, the GeForce GTX 285 1GB is 121% quicker than the Radeon R9 M265X in general, due to its higher bandwidth. (explain)

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

Texel Rate

The GeForce GTX 285 1GB is a lot (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

The GeForce GTX 285 1GB is a lot (more or less 125%) faster with regards to anti-aliasing than the Radeon R9 M265X, and also capable of handling higher screen resolutions without losing too much performance. (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 max amount of data (measured in MB per second) that can be transported across the external memory interface in a second. The number is calculated by multiplying the bus width by its memory speed. If it uses DDR RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly write to its local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill 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 max fill rate.