GeForce GTX 570 vs Radeon HD 6770

Intro

Compare all that to the Radeon HD 6770, which features a clock speed of 900 MHz and a GDDR5 memory frequency of 1050 MHz. It also makes use of a 128-bit memory bus, and uses a 40 nm design. It is made up of 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 6770		1520 points
	Difference: 2867 (189%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6770		108 Watts
GeForce GTX 570		219 Watts
	Difference: 111 Watts (103%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 570 should perform quite a bit faster than the Radeon HD 6770 overall. (explain)

GeForce GTX 570		152000 MB/sec
Radeon HD 6770		67200 MB/sec
	Difference: 84800 (126%)

Texel Rate

The GeForce GTX 570 will be quite a bit (more or less 22%) better at texture filtering than the Radeon HD 6770. (explain)

GeForce GTX 570		43920 Mtexels/sec
Radeon HD 6770		36000 Mtexels/sec
	Difference: 7920 (22%)

Pixel Rate

The GeForce GTX 570 is quite a bit (approximately 103%) better at full screen anti-aliasing than the Radeon HD 6770, and also able to handle higher resolutions more effectively. (explain)

GeForce GTX 570		29280 Mpixels/sec
Radeon HD 6770		14400 Mpixels/sec
	Difference: 14880 (103%)

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 largest amount of information (counted in MB per second) that can be transferred past the external memory interface within a second. It's worked out by multiplying the bus width by its memory clock speed. In the case of DDR type RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly record to the local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.