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GeForce GTX 650 Ti vs Radeon HD 7790

Intro

The GeForce GTX 650 Ti comes with clock speeds of 928 MHz on the GPU, and 1350 MHz on the 1024 MB of GDDR5 memory. It features 768 SPUs along with 64 TAUs and 16 ROPs.

Compare those specs to the Radeon HD 7790, which features clock speeds of 1000 MHz on the GPU, and 1500 MHz on the 1024 MB of GDDR5 memory. It features 896 SPUs as well as 56 Texture Address Units and 16 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7790 85 Watts
GeForce GTX 650 Ti 110 Watts
Difference: 25 Watts (29%)

Memory Bandwidth

In theory, the Radeon HD 7790 will be 11% quicker than the GeForce GTX 650 Ti overall, due to its greater data rate. (explain)

Radeon HD 7790 96000 MB/sec
GeForce GTX 650 Ti 86400 MB/sec
Difference: 9600 (11%)

Texel Rate

The GeForce GTX 650 Ti is a little bit (about 6%) better at texture filtering than the Radeon HD 7790. (explain)

GeForce GTX 650 Ti 59392 Mtexels/sec
Radeon HD 7790 56000 Mtexels/sec
Difference: 3392 (6%)

Pixel Rate

If using a high resolution is important to you, then the Radeon HD 7790 is a better choice, not by a very large margin though. (explain)

Radeon HD 7790 16000 Mpixels/sec
GeForce GTX 650 Ti 14848 Mpixels/sec
Difference: 1152 (8%)

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

GeForce GTX 650 Ti

Radeon HD 7790

Specifications

Display Specifications

Hide Specifications

Model GeForce GTX 650 Ti Radeon HD 7790
Manufacturer nVidia AMD
Year October 2012 March 2013
Code Name GK106 Bonaire XT
Memory 1024 MB 1024 MB
Core Speed 928 MHz 1000 MHz
Memory Speed 5400 MHz 6000 MHz
Power (Max TDP) 110 watts 85 watts
Bandwidth 86400 MB/sec 96000 MB/sec
Texel Rate 59392 Mtexels/sec 56000 Mtexels/sec
Pixel Rate 14848 Mpixels/sec 16000 Mpixels/sec
Unified Shaders 768 896
Texture Mapping Units 64 56
Render Output Units 16 16
Bus Type GDDR5 GDDR5
Bus Width 128-bit 128-bit
Fab Process 28 nm 28 nm
Transistors 2540 million 2080 million
Bus PCIe 3.0 x16 PCIe 3.0 x16
DirectX Version DirectX 11.0 DirectX 11.1
OpenGL Version OpenGL 4.3 OpenGL 4.3

Memory Bandwidth: Memory bandwidth is the maximum amount of information (counted in megabytes per second) that can be transported over the external memory interface in a second. It is calculated by multiplying the card's interface width by its memory speed. If it uses DDR type RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. 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 amount of texture map elements (texels) that are applied per second. This is calculated by multiplying the total texture units of the card by the core clock speed of the chip. The better the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly record to the local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the max fill rate.

GeForce GTX 650 Ti

Radeon HD 7790

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