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GeForce GTX 650 Ti vs Radeon HD 7790


Intro

The GeForce GTX 650 Ti makes use of a 28 nm design. nVidia has set the core frequency at 928 MHz. The GDDR5 RAM works at a frequency of 1350 MHz on this model. It features 768 SPUs along with 64 Texture Address Units and 16 ROPs.

Compare those specifications to the Radeon HD 7790, which makes use of a 28 nm design. AMD has set the core speed at 1000 MHz. The GDDR5 memory works at a frequency of 1500 MHz on this model. It features 896 SPUs along with 56 Texture Address Units and 16 Rasterization Operator Units.

Display Graphs

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Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

3DMark Fire Strike Graphics Score

Radeon HD 7790 4330 points
GeForce GTX 650 Ti 3430 points
Difference: 900 (26%)

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

As far as performance goes, the Radeon HD 7790 should in theory be a little bit superior to the GeForce GTX 650 Ti in general. (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 just a bit (more or less 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 running with high levels of AA is important to you, then the Radeon HD 7790 is superior to the GeForce GTX 650 Ti, but it probably won't make a huge difference. (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

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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: Bandwidth is the largest amount of information (measured in MB per second) that can be transferred over the external memory interface in a second. The number is calculated by multiplying the interface width by its memory speed. If it uses DDR type RAM, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly record to its local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.

GeForce GTX 650 Ti

Radeon HD 7790

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