GeForce GTX 560 vs Radeon HD 6770

Intro

Compare that to the Radeon HD 6770, which features GPU clock speed of 900 MHz, and 512 MB of GDDR5 RAM running at 1050 MHz through a 128-bit bus. It also is made up of 800 SPUs, 40 Texture Address Units, 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 560		3030 points
Radeon HD 6770		1520 points
	Difference: 1510 (99%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6770		108 Watts
GeForce GTX 560		150 Watts
	Difference: 42 Watts (39%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 560 will be 91% quicker than the Radeon HD 6770 in general, because of its greater data rate. (explain)

GeForce GTX 560		128128 MB/sec
Radeon HD 6770		67200 MB/sec
	Difference: 60928 (91%)

Texel Rate

The GeForce GTX 560 should be quite a bit (more or less 26%) faster with regards to anisotropic filtering than the Radeon HD 6770. (explain)

GeForce GTX 560		45360 Mtexels/sec
Radeon HD 6770		36000 Mtexels/sec
	Difference: 9360 (26%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the GeForce GTX 560 is superior to the Radeon HD 6770, and very much so. (explain)

GeForce GTX 560		25920 Mpixels/sec
Radeon HD 6770		14400 Mpixels/sec
	Difference: 11520 (80%)

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 max amount of information (counted in MB per second) that can be moved over the external memory interface within a second. It's calculated by multiplying the card's bus width by the speed of its memory. In the case of DDR RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. 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 texture map elements (texels) that are processed in one second. This number is worked out by multiplying the total amount of texture units of the card by the core speed of the chip. The higher the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of ROPs by the the core 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 rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the max fill rate.