GeForce GTX 650 Ti 2GB vs Radeon HD 6870

Intro

Compare those specs to the Radeon HD 6870, which comes with core clock speeds of 900 MHz on the GPU, and 1050 MHz on the 1024 MB of GDDR5 RAM. It features 1120 SPUs along with 56 TAUs and 32 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 650 Ti 2GB		110 Watts
Radeon HD 6870		151 Watts
	Difference: 41 Watts (37%)

Memory Bandwidth

In theory, the Radeon HD 6870 is 56% quicker than the GeForce GTX 650 Ti 2GB overall, due to its greater bandwidth. (explain)

Radeon HD 6870		134400 MB/sec
GeForce GTX 650 Ti 2GB		86400 MB/sec
	Difference: 48000 (56%)

Texel Rate

The GeForce GTX 650 Ti 2GB should be a small bit (more or less 18%) faster with regards to anisotropic filtering than the Radeon HD 6870. (explain)

GeForce GTX 650 Ti 2GB		59392 Mtexels/sec
Radeon HD 6870		50400 Mtexels/sec
	Difference: 8992 (18%)

Pixel Rate

If using a high resolution is important to you, then the Radeon HD 6870 is superior to the GeForce GTX 650 Ti 2GB, by far. (explain)

Radeon HD 6870		28800 Mpixels/sec
GeForce GTX 650 Ti 2GB		14848 Mpixels/sec
	Difference: 13952 (94%)

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 maximum amount of data (counted in megabytes per second) that can be transferred over the external memory interface in a second. The number is worked out by multiplying the card's bus width by its memory clock speed. In the case of DDR type RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed in one second. This is calculated by multiplying the total number of texture units by the core speed of the chip. The better the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly write to its local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the number of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant 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.