GeForce GTX 970 vs Geforce GTX 780

Intro

Compare those specs to the Geforce GTX 780, which comes with GPU clock speed of 863 MHz, and 3072 MB of GDDR5 RAM running at 1502 MHz through a 384-bit bus. It also is comprised of 2304 SPUs, 192 TAUs, and 48 Raster Operation 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

Performance-wise, the Geforce GTX 780 should theoretically be much better than the GeForce GTX 970 in general. (explain)

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

Texel Rate

The Geforce GTX 780 is a lot (more or less 52%) better at texture 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 will be much (more or less 62%) better at full screen anti-aliasing than the Geforce GTX 780, and should be capable of handling higher resolutions better. (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: Bandwidth is the maximum amount of information (counted in megabytes per second) that can be transported past the external memory interface in a second. It's calculated by multiplying the card's bus width by its memory clock speed. If it uses DDR memory, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster 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 can be applied per second. This figure is worked out by multiplying the total texture units by the core speed of the chip. The higher this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the most pixels the video card could possibly write to the local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the number of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.