Geforce GTX 670 vs Radeon HD 7990

Intro

Compare that to the Radeon HD 7990, which features a core clock frequency of 950 MHz and a GDDR5 memory speed of 1500 MHz. It also uses a 384-bit memory bus, and makes use of a 28 nm design. It is made up of 2048 SPUs, 128 Texture Address Units, and 32 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

Radeon HD 7990		15520 points
Geforce GTX 670		7351 points
	Difference: 8169 (111%)

Ethereum Mining Hash Rate

Radeon HD 7990		32 Mh/s
Geforce GTX 670		13 Mh/s
	Difference: 19 (146%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Geforce GTX 670		170 Watts
Radeon HD 7990		375 Watts
	Difference: 205 Watts (121%)

Memory Bandwidth

Performance-wise, the Radeon HD 7990 should in theory be much superior to the Geforce GTX 670 in general. (explain)

Radeon HD 7990		576000 MB/sec
Geforce GTX 670		192000 MB/sec
	Difference: 384000 (200%)

Texel Rate

The Radeon HD 7990 will be quite a bit (approximately 137%) faster with regards to AF than the Geforce GTX 670. (explain)

Radeon HD 7990		243200 Mtexels/sec
Geforce GTX 670		102480 Mtexels/sec
	Difference: 140720 (137%)

Pixel Rate

The Radeon HD 7990 is quite a bit (more or less 108%) faster with regards to anti-aliasing than the Geforce GTX 670, and able to handle higher resolutions better. (explain)

Radeon HD 7990		60800 Mpixels/sec
Geforce GTX 670		29280 Mpixels/sec
	Difference: 31520 (108%)

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.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

Specifications

Memory Bandwidth: Memory bandwidth is the max amount of information (in units of MB per second) that can be transported across the external memory interface within a second. The number is worked out by multiplying the card's bus width by its memory clock speed. In the case of DDR type memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly record to the local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.