Geforce GTX 770 vs Geforce GTX 780

Intro

Compare all of 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 made up of 2304 SPUs, 192 Texture Address Units, 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

In theory, the Geforce GTX 780 will be 29% faster than the Geforce GTX 770 in general, because of its greater data rate. (explain)

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

Texel Rate

The Geforce GTX 780 will be much (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 should be much (about 24%) faster with regards to FSAA than the Geforce GTX 770, and able to handle higher resolutions without slowing down too much. (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 largest amount of information (measured in MB per second) that can be transferred across the external memory interface within a second. The number is worked out by multiplying the card's interface width by its memory speed. If the card has DDR RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied in one second. This number is calculated by multiplying the total texture units 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 applied in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly write to the local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Raster Operations Pipelines 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 also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.