GeForce GTX 650 Ti 2GB vs Radeon R9 280

Intro

Compare those specs to the Radeon R9 280, which comes with core speeds of 933 MHz on the GPU, and 1250 MHz on the 3072 MB of GDDR5 RAM. It features 1792 SPUs as well as 112 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 280		250 Watts
	Difference: 140 Watts (127%)

Memory Bandwidth

In theory, the Radeon R9 280 will be 178% faster than the GeForce GTX 650 Ti 2GB overall, because of its greater data rate. (explain)

Radeon R9 280		240000 MB/sec
GeForce GTX 650 Ti 2GB		86400 MB/sec
	Difference: 153600 (178%)

Texel Rate

The Radeon R9 280 will be a lot (about 76%) better at anisotropic filtering than the GeForce GTX 650 Ti 2GB. (explain)

Radeon R9 280		104496 Mtexels/sec
GeForce GTX 650 Ti 2GB		59392 Mtexels/sec
	Difference: 45104 (76%)

Pixel Rate

If using a high resolution is important to you, then the Radeon R9 280 is superior to the GeForce GTX 650 Ti 2GB, by a large margin. (explain)

Radeon R9 280		29856 Mpixels/sec
GeForce GTX 650 Ti 2GB		14848 Mpixels/sec
	Difference: 15008 (101%)

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 (measured in MB per second) that can be moved over the external memory interface within a second. It's worked out by multiplying the bus width by its memory speed. If the card has DDR memory, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly write to its local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.