Geforce GTX 670 vs Radeon HD 7790

Intro

Compare those specifications to the Radeon HD 7790, which makes use of a 28 nm design. AMD has clocked the core frequency at 1000 MHz. The GDDR5 memory runs at a frequency of 1500 MHz on this specific model. It features 896 SPUs as well as 56 TAUs and 16 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 670		7351 points
Radeon HD 7790		4330 points
	Difference: 3021 (70%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7790		85 Watts
Geforce GTX 670		170 Watts
	Difference: 85 Watts (100%)

Memory Bandwidth

Performance-wise, the Geforce GTX 670 should theoretically be much superior to the Radeon HD 7790 overall. (explain)

Geforce GTX 670		192000 MB/sec
Radeon HD 7790		96000 MB/sec
	Difference: 96000 (100%)

Texel Rate

The Geforce GTX 670 is much (approximately 83%) better at AF than the Radeon HD 7790. (explain)

Geforce GTX 670		102480 Mtexels/sec
Radeon HD 7790		56000 Mtexels/sec
	Difference: 46480 (83%)

Pixel Rate

If running with high levels of AA is important to you, then the Geforce GTX 670 is the winner, by a large margin. (explain)

Geforce GTX 670		29280 Mpixels/sec
Radeon HD 7790		16000 Mpixels/sec
	Difference: 13280 (83%)

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 largest amount of data (in units of MB per second) that can be transported over the external memory interface in a second. It's worked out by multiplying the interface width by its memory clock speed. In the case of DDR type memory, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher 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 number of texture map elements (texels) that are applied per second. This number is worked out by multiplying the total texture units by the core clock speed of the chip. The higher this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly write to the local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill 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 get to the maximum fill rate.