Geforce GTX 780 vs Radeon HD 7850

Intro

Compare those specs to the Radeon HD 7850, which comes with a clock frequency of 860 MHz and a GDDR5 memory speed of 1200 MHz. It also features a 256-bit memory bus, and makes use of a 28 nm design. It is made up of 1024 SPUs, 64 Texture Address Units, 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 7850		5200 points
	Difference: 4882 (94%)

Ethereum Mining Hash Rate

Geforce GTX 780		20 Mh/s
Radeon HD 7850		13 Mh/s
	Difference: 7 (54%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7850		130 Watts
Geforce GTX 780		250 Watts
	Difference: 120 Watts (92%)

Memory Bandwidth

As far as performance goes, the Geforce GTX 780 should in theory be much better than the Radeon HD 7850 in general. (explain)

Geforce GTX 780		288384 MB/sec
Radeon HD 7850		153600 MB/sec
	Difference: 134784 (88%)

Texel Rate

The Geforce GTX 780 is quite a bit (more or less 201%) more effective at AF than the Radeon HD 7850. (explain)

Geforce GTX 780		165696 Mtexels/sec
Radeon HD 7850		55040 Mtexels/sec
	Difference: 110656 (201%)

Pixel Rate

If using a high screen resolution is important to you, then the Geforce GTX 780 is the winner, and very much so. (explain)

Geforce GTX 780		41424 Mpixels/sec
Radeon HD 7850		27520 Mpixels/sec
	Difference: 13904 (51%)

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 max amount of information (in units of megabytes per second) that can be moved across the external memory interface in one second. It's calculated by multiplying the card's bus width by its memory clock speed. In the case of DDR memory, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed per second. This figure is worked out by multiplying the total amount of texture units by the core clock speed of the chip. The better the texel rate, 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 that the graphics card can possibly write to its local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of colour ROPs 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 fill rate also depends on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.