GeForce GTX 780 Ti vs Radeon HD 7950

Intro

Compare all that to the Radeon HD 7950, which features GPU clock speed of 800 MHz, and 1536 MB of GDDR5 memory running at 1250 MHz through a 384-bit bus. It also is made up of 1792 SPUs, 112 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 Ti		10900 points
Radeon HD 7950		7731 points
	Difference: 3169 (41%)

Ethereum Mining Hash Rate

Radeon HD 7950		21 Mh/s
GeForce GTX 780 Ti		19 Mh/s
	Difference: 2 (11%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7950		200 Watts
GeForce GTX 780 Ti		250 Watts
	Difference: 50 Watts (25%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 780 Ti should be a lot faster than the Radeon HD 7950 in general. (explain)

GeForce GTX 780 Ti		336000 MB/sec
Radeon HD 7950		240000 MB/sec
	Difference: 96000 (40%)

Texel Rate

The GeForce GTX 780 Ti is a lot (approximately 134%) faster with regards to texture filtering than the Radeon HD 7950. (explain)

GeForce GTX 780 Ti		210000 Mtexels/sec
Radeon HD 7950		89600 Mtexels/sec
	Difference: 120400 (134%)

Pixel Rate

The GeForce GTX 780 Ti is much (approximately 64%) better at anti-aliasing than the Radeon HD 7950, and also capable of handling higher screen resolutions while still performing well. (explain)

GeForce GTX 780 Ti		42000 Mpixels/sec
Radeon HD 7950		25600 Mpixels/sec
	Difference: 16400 (64%)

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 max amount of data (counted in megabytes per second) that can be transferred past the external memory interface in a second. The number is worked out by multiplying the card's bus width by its memory speed. If it uses DDR RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could 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 colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the max fill rate.