GeForce GTX 570 vs Radeon HD 6790

Intro

Compare those specs to the Radeon HD 6790, which has a core clock frequency of 840 MHz and a GDDR5 memory speed of 1050 MHz. It also features a 256-bit memory bus, and makes use of a 40 nm design. It features 800 SPUs, 40 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 570		4387 points
Radeon HD 6790		2150 points
	Difference: 2237 (104%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6790		150 Watts
GeForce GTX 570		219 Watts
	Difference: 69 Watts (46%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 570 should be 13% faster than the Radeon HD 6790 overall, due to its greater bandwidth. (explain)

GeForce GTX 570		152000 MB/sec
Radeon HD 6790		134400 MB/sec
	Difference: 17600 (13%)

Texel Rate

The GeForce GTX 570 will be a lot (approximately 31%) faster with regards to AF than the Radeon HD 6790. (explain)

GeForce GTX 570		43920 Mtexels/sec
Radeon HD 6790		33600 Mtexels/sec
	Difference: 10320 (31%)

Pixel Rate

The GeForce GTX 570 is quite a bit (more or less 118%) faster with regards to full screen anti-aliasing than the Radeon HD 6790, and will be able to handle higher resolutions while still performing well. (explain)

GeForce GTX 570		29280 Mpixels/sec
Radeon HD 6790		13440 Mpixels/sec
	Difference: 15840 (118%)

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 (measured in MB per second) that can be transported across the external memory interface in one second. It's calculated by multiplying the interface width by its memory clock speed. If the card has DDR RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed per second. This number is calculated by multiplying the total number of texture units of the card by the core clock speed of the chip. The higher this number, the better the graphics 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 amount of pixels that the graphics chip could possibly record to the local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the max fill rate.