GeForce GTX 650 Ti 2GB vs Radeon R9 280X

Intro

Compare those specs to the Radeon R9 280X, which features core speeds of 850 MHz on the GPU, and 1500 MHz on the 3072 MB of GDDR5 RAM. It features 2048 SPUs as well as 128 Texture Address Units and 32 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 650 Ti 2GB		110 Watts
Radeon R9 280X		250 Watts
	Difference: 140 Watts (127%)

Memory Bandwidth

In theory, the Radeon R9 280X is 233% quicker than the GeForce GTX 650 Ti 2GB in general, because of its higher data rate. (explain)

Radeon R9 280X		288000 MB/sec
GeForce GTX 650 Ti 2GB		86400 MB/sec
	Difference: 201600 (233%)

Texel Rate

The Radeon R9 280X should be much (approximately 83%) faster with regards to AF than the GeForce GTX 650 Ti 2GB. (explain)

Radeon R9 280X		108800 Mtexels/sec
GeForce GTX 650 Ti 2GB		59392 Mtexels/sec
	Difference: 49408 (83%)

Pixel Rate

The Radeon R9 280X will be much (about 83%) more effective at full screen anti-aliasing than the GeForce GTX 650 Ti 2GB, and will be able to handle higher resolutions without slowing down too much. (explain)

Radeon R9 280X		27200 Mpixels/sec
GeForce GTX 650 Ti 2GB		14848 Mpixels/sec
	Difference: 12352 (83%)

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 data (counted in megabytes per second) that can be transported over the external memory interface in a second. The number is calculated by multiplying the card's bus width by the speed of its memory. If it uses DDR RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of 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 number of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.