GeForce GTX 650 Ti 2GB vs Geforce GTX 770

Intro

Compare those specifications to the Geforce GTX 770, which has GPU clock speed of 1046 MHz, and 2048 MB of GDDR5 RAM set to run at 1753 MHz through a 256-bit bus. It also features 1536 Stream Processors, 128 TAUs, and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 650 Ti 2GB		110 Watts
Geforce GTX 770		230 Watts
	Difference: 120 Watts (109%)

Memory Bandwidth

The Geforce GTX 770 should in theory be a lot faster than the GeForce GTX 650 Ti 2GB in general. (explain)

Geforce GTX 770		224384 MB/sec
GeForce GTX 650 Ti 2GB		86400 MB/sec
	Difference: 137984 (160%)

Texel Rate

The Geforce GTX 770 should be quite a bit (more or less 125%) better at texture filtering than the GeForce GTX 650 Ti 2GB. (explain)

Geforce GTX 770		133888 Mtexels/sec
GeForce GTX 650 Ti 2GB		59392 Mtexels/sec
	Difference: 74496 (125%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the Geforce GTX 770 is superior to the GeForce GTX 650 Ti 2GB, by a large margin. (explain)

Geforce GTX 770		33472 Mpixels/sec
GeForce GTX 650 Ti 2GB		14848 Mpixels/sec
	Difference: 18624 (125%)

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

Specifications

Memory Bandwidth: Memory bandwidth is the largest amount of information (measured in megabytes per second) that can be transported over the external memory interface within a second. It's worked out by multiplying the card's bus width by the speed of its memory. If the card has DDR type RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. 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 texture map elements (texels) that are processed per second. This number is calculated by multiplying the total number of texture units by the core speed of the chip. The higher the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly record to the local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the max fill rate.