Geforce GTX 770 vs Geforce GTX 780

Intro

Compare that to the Geforce GTX 780, which has GPU clock speed of 863 MHz, and 3072 MB of GDDR5 memory running at 1502 MHz through a 384-bit bus. It also is comprised of 2304 Stream Processors, 192 TAUs, and 48 ROPs.

Display Graphs

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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 780		10082 points
Geforce GTX 770		7854 points
	Difference: 2228 (28%)

Ethereum Mining Hash Rate

Geforce GTX 780		20 Mh/s
Geforce GTX 770		14 Mh/s
	Difference: 6 (43%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Geforce GTX 770		230 Watts
Geforce GTX 780		250 Watts
	Difference: 20 Watts (9%)

Memory Bandwidth

Performance-wise, the Geforce GTX 780 should theoretically be much better than the Geforce GTX 770 overall. (explain)

Geforce GTX 780		288384 MB/sec
Geforce GTX 770		224384 MB/sec
	Difference: 64000 (29%)

Texel Rate

The Geforce GTX 780 will be a lot (about 24%) better at texture filtering than the Geforce GTX 770. (explain)

Geforce GTX 780		165696 Mtexels/sec
Geforce GTX 770		133888 Mtexels/sec
	Difference: 31808 (24%)

Pixel Rate

The Geforce GTX 780 is much (approximately 24%) more effective at FSAA than the Geforce GTX 770, and also should be capable of handling higher resolutions while still performing well. (explain)

Geforce GTX 780		41424 Mpixels/sec
Geforce GTX 770		33472 Mpixels/sec
	Difference: 7952 (24%)

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 max amount of information (in units of megabytes per second) that can be moved across the external memory interface in a second. It is worked out by multiplying the card's bus width by its memory speed. If it uses DDR type memory, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

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