GeForce GTX 980 vs Geforce GTX 770

Intro

Compare that to the Geforce GTX 770, which uses a 28 nm design. nVidia has clocked the core speed at 1046 MHz. The GDDR5 RAM is set to run at a frequency of 1753 MHz on this specific model. It features 1536 SPUs along with 128 TAUs and 32 Rasterization Operator Units.

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 980		13552 points
Geforce GTX 770		7854 points
	Difference: 5698 (73%)

Ethereum Mining Hash Rate

GeForce GTX 980		20 Mh/s
Geforce GTX 770		14 Mh/s
	Difference: 6 (43%)

Zcash Mining Hash Rate

GeForce GTX 980		408 Sol/s
Geforce GTX 770		70 Sol/s
	Difference: 338 (483%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 980		165 Watts
Geforce GTX 770		230 Watts
	Difference: 65 Watts (39%)

Memory Bandwidth

In theory, the Geforce GTX 770 will be 0% faster than the GeForce GTX 980 in general, because of its greater data rate. (explain)

Geforce GTX 770		224384 MB/sec
GeForce GTX 980		224000 MB/sec
	Difference: 384 (0%)

Texel Rate

The GeForce GTX 980 should be a small bit (more or less 8%) better at texture filtering than the Geforce GTX 770. (explain)

GeForce GTX 980		144128 Mtexels/sec
Geforce GTX 770		133888 Mtexels/sec
	Difference: 10240 (8%)

Pixel Rate

If running with a high resolution is important to you, then the GeForce GTX 980 is a better choice, by a large margin. (explain)

GeForce GTX 980		72064 Mpixels/sec
Geforce GTX 770		33472 Mpixels/sec
	Difference: 38592 (115%)

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 maximum amount of information (measured in megabytes per second) that can be transported across the external memory interface within a second. It is calculated by multiplying the card's interface width by the speed of its memory. If the card has DDR type RAM, it must be multiplied by 2 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, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the video card can possibly write to its local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the number of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.