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GeForce GTX 650 Ti 2GB vs GeForce GTX 780 Ti

Intro

The GeForce GTX 650 Ti 2GB features clock speeds of 928 MHz on the GPU, and 1350 MHz on the 2048 MB of GDDR5 RAM. It features 768 SPUs along with 64 TAUs and 16 ROPs.

Compare all of that to the GeForce GTX 780 Ti, which has clock speeds of 875 MHz on the GPU, and 1750 MHz on the 3072 MB of GDDR5 memory. It features 2880 SPUs as well as 240 TAUs and 48 Rasterization Operator Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 650 Ti 2GB 110 Watts
GeForce GTX 780 Ti 250 Watts
Difference: 140 Watts (127%)

Memory Bandwidth

Performance-wise, the GeForce GTX 780 Ti should theoretically be much superior to the GeForce GTX 650 Ti 2GB overall. (explain)

GeForce GTX 780 Ti 336000 MB/sec
GeForce GTX 650 Ti 2GB 86400 MB/sec
Difference: 249600 (289%)

Texel Rate

The GeForce GTX 780 Ti will be a lot (about 254%) better at anisotropic filtering than the GeForce GTX 650 Ti 2GB. (explain)

GeForce GTX 780 Ti 210000 Mtexels/sec
GeForce GTX 650 Ti 2GB 59392 Mtexels/sec
Difference: 150608 (254%)

Pixel Rate

The GeForce GTX 780 Ti will be quite a bit (about 183%) more effective at anti-aliasing than the GeForce GTX 650 Ti 2GB, and should be able to handle higher screen resolutions without slowing down too much. (explain)

GeForce GTX 780 Ti 42000 Mpixels/sec
GeForce GTX 650 Ti 2GB 14848 Mpixels/sec
Difference: 27152 (183%)

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 2GB

Amazon.com

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GeForce GTX 780 Ti

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 2GB GeForce GTX 780 Ti
Manufacturer nVidia nVidia
Year October 2012 November 2013
Code Name GK106 GK110
Memory 2048 MB 3072 MB
Core Speed 928 MHz 875 MHz
Memory Speed 5400 MHz 7000 MHz
Power (Max TDP) 110 watts 250 watts
Bandwidth 86400 MB/sec 336000 MB/sec
Texel Rate 59392 Mtexels/sec 210000 Mtexels/sec
Pixel Rate 14848 Mpixels/sec 42000 Mpixels/sec
Unified Shaders 768 2880
Texture Mapping Units 64 240
Render Output Units 16 48
Bus Type GDDR5 GDDR5
Bus Width 128-bit 384-bit
Fab Process 28 nm 28 nm
Transistors 2540 million 7080 million
Bus PCIe 3.0 x16 PCIe 3.0 x16
DirectX Version DirectX 11.0 DirectX 11.0
OpenGL Version OpenGL 4.3 OpenGL 4.4

Memory Bandwidth: Bandwidth is the max amount of information (in units of MB per second) that can be transferred over the external memory interface in one second. The number is calculated by multiplying the interface width by its memory clock speed. In the case of DDR RAM, it should be multiplied by 2 again. If 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 can be processed in one second. This figure is worked out by multiplying the total number of texture units of the card by the core clock speed of the chip. The higher this number, the better the graphics card will be at handling 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 could possibly write to its local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the number of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.

Display Prices

Hide Prices

GeForce GTX 650 Ti 2GB

Amazon.com

Check prices at:

GeForce GTX 780 Ti

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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