GeForce GTX 650 Ti 2GB vs Radeon R9 280

Intro

Compare those specs to the Radeon R9 280, which comes with GPU clock speed of 933 MHz, and 3072 MB of GDDR5 RAM running at 1250 MHz through a 384-bit bus. It also is made up of 1792 Stream Processors, 112 Texture Address Units, and 32 Raster Operation Units.

Display Graphs

Hide Graphs

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

As far as performance goes, the Radeon R9 280 should in theory be a lot superior to the GeForce GTX 650 Ti 2GB overall. (explain)

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

Texel Rate

The Radeon R9 280 is much (about 76%) more effective at texture 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 running with lots of anti-aliasing 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: Memory bandwidth is the maximum amount of information (in units of megabytes per second) that can be transported past the external memory interface within a second. The number is calculated by multiplying the interface width by the speed of its memory. If the card has DDR type RAM, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, 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 number of texture map elements (texels) that can be processed in one second. This figure 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 applied per second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly write to the local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output 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 potential to get to the maximum fill rate.