GeForce GTX 980 vs Geforce GTX 770

Intro

Compare that to the Geforce GTX 770, which makes use of a 28 nm design. nVidia has clocked the core speed at 1046 MHz. The GDDR5 memory is set to run at a frequency of 1753 MHz on this particular card. It features 1536 SPUs as well as 128 Texture Address Units 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

Performance-wise, the Geforce GTX 770 should in theory be a bit better than the GeForce GTX 980 overall. (explain)

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

Texel Rate

The GeForce GTX 980 will be just a bit (approximately 8%) faster with regards to AF than the Geforce GTX 770. (explain)

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

Pixel Rate

The GeForce GTX 980 should be quite a bit (about 115%) more effective at full screen anti-aliasing than the Geforce GTX 770, and also should be capable of handling higher resolutions without losing too much performance. (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: Bandwidth is the largest amount of information (in units of MB per second) that can be transferred past 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 RAM, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the better 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 number is calculated by multiplying the total amount of texture units of the card by the core speed of the chip. The higher the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly record to its local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to 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 get to the maximum fill rate.