GeForce GTX 560 Ti 448 vs Radeon HD 6870

Intro

Compare that to the Radeon HD 6870, which has a clock frequency of 900 MHz and a GDDR5 memory frequency of 1050 MHz. It also makes use of a 256-bit bus, and uses a 40 nm design. It is comprised of 1120 SPUs, 56 TAUs, and 32 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 Ti 448		4200 points
Radeon HD 6870		2870 points
	Difference: 1330 (46%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6870		151 Watts
GeForce GTX 560 Ti 448		210 Watts
	Difference: 59 Watts (39%)

Memory Bandwidth

In theory, the GeForce GTX 560 Ti 448 should perform a small bit faster than the Radeon HD 6870 overall. (explain)

GeForce GTX 560 Ti 448		144000 MB/sec
Radeon HD 6870		134400 MB/sec
	Difference: 9600 (7%)

Texel Rate

The Radeon HD 6870 will be much (more or less 23%) faster with regards to AF than the GeForce GTX 560 Ti 448. (explain)

Radeon HD 6870		50400 Mtexels/sec
GeForce GTX 560 Ti 448		40992 Mtexels/sec
	Difference: 9408 (23%)

Pixel Rate

The GeForce GTX 560 Ti 448 will be a small bit (more or less 2%) more effective at anti-aliasing than the Radeon HD 6870, and also able to handle higher resolutions without losing too much performance. (explain)

GeForce GTX 560 Ti 448		29280 Mpixels/sec
Radeon HD 6870		28800 Mpixels/sec
	Difference: 480 (2%)

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 information (measured in MB per second) that can be transported across the external memory interface in a second. It is worked out by multiplying the card's interface width by its memory clock speed. If it uses DDR RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied in one second. This 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 processed in one second.

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