GeForce GTX 970 vs Geforce GTX 780

Intro

Compare all of that to the Geforce GTX 780, which comes with core clock speeds of 863 MHz on the GPU, and 1502 MHz on the 3072 MB of GDDR5 RAM. It features 2304 SPUs along with 192 TAUs and 48 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 970		10867 points
Geforce GTX 780		10082 points
	Difference: 785 (8%)

Ethereum Mining Hash Rate

Geforce GTX 780		20 Mh/s
GeForce GTX 970		19 Mh/s
	Difference: 1 (5%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 970		145 Watts
Geforce GTX 780		250 Watts
	Difference: 105 Watts (72%)

Memory Bandwidth

Theoretically speaking, the Geforce GTX 780 is 29% quicker than the GeForce GTX 970 in general, due to its higher bandwidth. (explain)

Geforce GTX 780		288384 MB/sec
GeForce GTX 970		224000 MB/sec
	Difference: 64384 (29%)

Texel Rate

The Geforce GTX 780 is much (more or less 52%) faster with regards to anisotropic filtering than the GeForce GTX 970. (explain)

Geforce GTX 780		165696 Mtexels/sec
GeForce GTX 970		109200 Mtexels/sec
	Difference: 56496 (52%)

Pixel Rate

The GeForce GTX 970 is much (about 62%) better at anti-aliasing than the Geforce GTX 780, and also will be able to handle higher resolutions while still performing well. (explain)

GeForce GTX 970		67200 Mpixels/sec
Geforce GTX 780		41424 Mpixels/sec
	Difference: 25776 (62%)

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 data (measured in MB per second) that can be transported across the external memory interface within a second. It's worked out by multiplying the bus width by its memory clock speed. If it uses DDR memory, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed per second. This number is worked out by multiplying the total number of texture units of the card 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 in one second.

Pixel Rate: Pixel rate is the most pixels the video card could possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of ROPs by the clock 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 fill rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.