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GeForce GTX 650 Ti vs Radeon HD 7870


Intro

The GeForce GTX 650 Ti has a clock frequency of 928 MHz and a GDDR5 memory frequency of 1350 MHz. It also uses a 128-bit bus, and makes use of a 28 nm design. It is made up of 768 SPUs, 64 Texture Address Units, and 16 Raster Operation Units.

Compare all that to the Radeon HD 7870, which comes with core speeds of 1000 MHz on the GPU, and 1200 MHz on the 2048 MB of GDDR5 memory. It features 1280 SPUs along with 80 TAUs and 32 Rasterization Operator 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

Radeon HD 7870 6230 points
GeForce GTX 650 Ti 3430 points
Difference: 2800 (82%)

Ethereum Mining Hash Rate

Radeon HD 7870 16 Mh/s
GeForce GTX 650 Ti 10 Mh/s
Difference: 6 (60%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 650 Ti 110 Watts
Radeon HD 7870 175 Watts
Difference: 65 Watts (59%)

Memory Bandwidth

As far as performance goes, the Radeon HD 7870 should in theory be a lot better than the GeForce GTX 650 Ti overall. (explain)

Radeon HD 7870 153600 MB/sec
GeForce GTX 650 Ti 86400 MB/sec
Difference: 67200 (78%)

Texel Rate

The Radeon HD 7870 will be much (about 35%) better at anisotropic filtering than the GeForce GTX 650 Ti. (explain)

Radeon HD 7870 80000 Mtexels/sec
GeForce GTX 650 Ti 59392 Mtexels/sec
Difference: 20608 (35%)

Pixel Rate

If using high levels of AA is important to you, then the Radeon HD 7870 is the winner, and very much so. (explain)

Radeon HD 7870 32000 Mpixels/sec
GeForce GTX 650 Ti 14848 Mpixels/sec
Difference: 17152 (116%)

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

Radeon HD 7870

Amazon.com

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 7870
Manufacturer nVidia AMD
Year October 2012 March 2012
Code Name GK106 Pitcairn XT
Memory 1024 MB 2048 MB
Core Speed 928 MHz 1000 MHz
Memory Speed 5400 MHz 4800 MHz
Power (Max TDP) 110 watts 175 watts
Bandwidth 86400 MB/sec 153600 MB/sec
Texel Rate 59392 Mtexels/sec 80000 Mtexels/sec
Pixel Rate 14848 Mpixels/sec 32000 Mpixels/sec
Unified Shaders 768 1280
Texture Mapping Units 64 80
Render Output Units 16 32
Bus Type GDDR5 GDDR5
Bus Width 128-bit 256-bit
Fab Process 28 nm 28 nm
Transistors 2540 million 2800 million
Bus PCIe 3.0 x16 PCIe 3.0 x16
DirectX Version DirectX 11.0 DirectX 11.1
OpenGL Version OpenGL 4.3 OpenGL 4.2

Memory Bandwidth: Bandwidth is the max amount of information (counted in MB per second) that can be transferred over the external memory interface in a second. The number is worked out by multiplying the card's interface width by the speed of its memory. In the case of DDR RAM, the result should be multiplied by 2 once 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 number of texture map elements (texels) that can be applied per second. This is worked out by multiplying the total texture units by the core speed of the chip. The better the texel rate, the better the video 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 number of pixels the video card could possibly record to the local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the max fill rate.

Display Prices

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GeForce GTX 650 Ti

Amazon.com

Radeon HD 7870

Amazon.com

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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