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GeForce GTX 650 Ti vs Radeon HD 6790

Intro

The GeForce GTX 650 Ti makes use of a 28 nm design. nVidia has clocked the core speed at 928 MHz. The GDDR5 memory is set to run at a speed of 1350 MHz on this particular model. It features 768 SPUs along with 64 Texture Address Units and 16 Rasterization Operator Units.

Compare that to the Radeon HD 6790, which has a clock frequency of 840 MHz and a GDDR5 memory speed of 1050 MHz. It also uses a 256-bit bus, and uses a 40 nm design. It is comprised of 800 SPUs, 40 TAUs, and 16 Raster Operation Units.

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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

GeForce GTX 650 Ti 3434 points
Radeon HD 6790 2150 points
Difference: 1284 (60%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 650 Ti 110 Watts
Radeon HD 6790 150 Watts
Difference: 40 Watts (36%)

Memory Bandwidth

As far as performance goes, the Radeon HD 6790 should in theory be quite a bit better than the GeForce GTX 650 Ti overall. (explain)

Radeon HD 6790 134400 MB/sec
GeForce GTX 650 Ti 86400 MB/sec
Difference: 48000 (56%)

Texel Rate

The GeForce GTX 650 Ti should be quite a bit (approximately 77%) better at AF than the Radeon HD 6790. (explain)

GeForce GTX 650 Ti 59392 Mtexels/sec
Radeon HD 6790 33600 Mtexels/sec
Difference: 25792 (77%)

Pixel Rate

The GeForce GTX 650 Ti will be a bit (approximately 10%) faster with regards to FSAA than the Radeon HD 6790, and should be capable of handling higher screen resolutions while still performing well. (explain)

GeForce GTX 650 Ti 14848 Mpixels/sec
Radeon HD 6790 13440 Mpixels/sec
Difference: 1408 (10%)

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

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GeForce GTX 650 Ti

Amazon.com

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Radeon HD 6790

Amazon.com

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Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

Specifications

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Model GeForce GTX 650 Ti Radeon HD 6790
Manufacturer nVidia AMD
Year October 2012 April 2011
Code Name GK106 Barts LE
Memory 1024 MB 1024 MB
Core Speed 928 MHz 840 MHz
Memory Speed 5400 MHz 4200 MHz
Power (Max TDP) 110 watts 150 watts
Bandwidth 86400 MB/sec 134400 MB/sec
Texel Rate 59392 Mtexels/sec 33600 Mtexels/sec
Pixel Rate 14848 Mpixels/sec 13440 Mpixels/sec
Unified Shaders 768 800
Texture Mapping Units 64 40
Render Output Units 16 16
Bus Type GDDR5 GDDR5
Bus Width 128-bit 256-bit
Fab Process 28 nm 40 nm
Transistors 2540 million 1700 million
Bus PCIe 3.0 x16 PCIe 2.1 x16
DirectX Version DirectX 11.0 DirectX 11
OpenGL Version OpenGL 4.3 OpenGL 4.1

Memory Bandwidth: Bandwidth is the largest amount of data (measured in megabytes per second) that can be moved past the external memory interface in a second. The number is worked out by multiplying the interface width by the speed of its memory. In the case of DDR memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the video card can possibly record to its local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the number of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also 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, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the max fill rate.

Display Prices

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GeForce GTX 650 Ti

Amazon.com

Check prices at:

Radeon HD 6790

Amazon.com

Check prices at:

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

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