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GeForce GTX 650 vs Radeon HD 5670

Intro

The GeForce GTX 650 makes use of a 28 nm design. nVidia has clocked the core speed at 1058 MHz. The GDDR5 memory works at a frequency of 1250 MHz on this specific model. It features 384 SPUs as well as 32 Texture Address Units and 16 Rasterization Operator Units.

Compare all of that to the Radeon HD 5670, which has clock speeds of 775 MHz on the GPU, and 1000 MHz on the 1024 MB of GDDR5 RAM. It features 400(80x5) SPUs along with 20 Texture Address Units and 8 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5670 61 Watts
GeForce GTX 650 64 Watts
Difference: 3 Watts (5%)

Memory Bandwidth

The GeForce GTX 650, in theory, should perform quite a bit faster than the Radeon HD 5670 overall. (explain)

GeForce GTX 650 80000 MB/sec
Radeon HD 5670 64000 MB/sec
Difference: 16000 (25%)

Texel Rate

The GeForce GTX 650 will be quite a bit (more or less 118%) faster with regards to AF than the Radeon HD 5670. (explain)

GeForce GTX 650 33856 Mtexels/sec
Radeon HD 5670 15500 Mtexels/sec
Difference: 18356 (118%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the GeForce GTX 650 is the winner, and very much so. (explain)

GeForce GTX 650 16928 Mpixels/sec
Radeon HD 5670 6200 Mpixels/sec
Difference: 10728 (173%)

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

Amazon.com

Check prices at:

Radeon HD 5670

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.

Specifications

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Model GeForce GTX 650 Radeon HD 5670
Manufacturer nVidia AMD
Year September 2012 January 14, 2010
Code Name GK107 Redwood XT
Memory 1024 MB 1024 MB
Core Speed 1058 MHz 775 MHz
Memory Speed 5000 MHz 4000 MHz
Power (Max TDP) 64 watts 61 watts
Bandwidth 80000 MB/sec 64000 MB/sec
Texel Rate 33856 Mtexels/sec 15500 Mtexels/sec
Pixel Rate 16928 Mpixels/sec 6200 Mpixels/sec
Unified Shaders 384 400(80x5)
Texture Mapping Units 32 20
Render Output Units 16 8
Bus Type GDDR5 GDDR5
Bus Width 128-bit 128-bit
Fab Process 28 nm 40 nm
Transistors 1300 million 627 million
Bus PCIe 3.0 x16 PCIe 2.1 x16
DirectX Version DirectX 11.0 DirectX 11
OpenGL Version OpenGL 4.3 OpenGL 3.2

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 in one second. It's worked out by multiplying the card's interface width by its memory clock speed. If it uses DDR memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied per second. This figure is calculated by multiplying the total amount of texture units by the core 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 one second.

Pixel Rate: Pixel rate is the most pixels the video card can possibly record to the local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.

Display Prices

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GeForce GTX 650

Amazon.com

Check prices at:

Radeon HD 5670

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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