Geforce GTX 780 vs Radeon HD 7870 XT

Intro

Compare those specifications to the Radeon HD 7870 XT, which makes use of a 28 nm design. AMD has clocked the core frequency at 925 MHz. The GDDR5 RAM works at a speed of 1500 MHz on this particular model. It features 1536 SPUs as well as 96 TAUs and 32 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
Radeon HD 7870 XT		6390 points
	Difference: 3692 (58%)

Ethereum Mining Hash Rate

Geforce GTX 780		20 Mh/s
Radeon HD 7870 XT		15 Mh/s
	Difference: 5 (33%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7870 XT		185 Watts
Geforce GTX 780		250 Watts
	Difference: 65 Watts (35%)

Memory Bandwidth

As far as performance goes, the Geforce GTX 780 should theoretically be quite a bit better than the Radeon HD 7870 XT in general. (explain)

Geforce GTX 780		288384 MB/sec
Radeon HD 7870 XT		192000 MB/sec
	Difference: 96384 (50%)

Texel Rate

The Geforce GTX 780 is a lot (about 87%) more effective at texture filtering than the Radeon HD 7870 XT. (explain)

Geforce GTX 780		165696 Mtexels/sec
Radeon HD 7870 XT		88800 Mtexels/sec
	Difference: 76896 (87%)

Pixel Rate

The Geforce GTX 780 should be much (more or less 40%) more effective at AA than the Radeon HD 7870 XT, and should be able to handle higher screen resolutions without slowing down too much. (explain)

Geforce GTX 780		41424 Mpixels/sec
Radeon HD 7870 XT		29600 Mpixels/sec
	Difference: 11824 (40%)

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 (in units of megabytes per second) that can be transferred across the external memory interface in a second. The number is calculated by multiplying the card's interface width by its memory speed. In the case of DDR RAM, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly write to its local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.