GeForce GTX 650 Ti 2GB vs Radeon HD 6850

Intro

Compare those specifications to the Radeon HD 6850, which comes with GPU clock speed of 775 MHz, and 1024 MB of GDDR5 memory running at 1000 MHz through a 256-bit bus. It also is comprised of 960 Stream Processors, 48 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 6850		127 Watts
	Difference: 17 Watts (15%)

Memory Bandwidth

In theory, the Radeon HD 6850 will be 48% quicker than the GeForce GTX 650 Ti 2GB overall, because of its greater data rate. (explain)

Radeon HD 6850		128000 MB/sec
GeForce GTX 650 Ti 2GB		86400 MB/sec
	Difference: 41600 (48%)

Texel Rate

The GeForce GTX 650 Ti 2GB will be much (about 60%) faster with regards to texture filtering than the Radeon HD 6850. (explain)

GeForce GTX 650 Ti 2GB		59392 Mtexels/sec
Radeon HD 6850		37200 Mtexels/sec
	Difference: 22192 (60%)

Pixel Rate

The Radeon HD 6850 should be much (about 67%) better at full screen anti-aliasing than the GeForce GTX 650 Ti 2GB, and should be capable of handling higher resolutions while still performing well. (explain)

Radeon HD 6850		24800 Mpixels/sec
GeForce GTX 650 Ti 2GB		14848 Mpixels/sec
	Difference: 9952 (67%)

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 past the external memory interface in one second. It is calculated by multiplying the card's interface width by the speed of its memory. In the case of DDR memory, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the 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 number of texture map elements (texels) that are applied per second. This is worked out by multiplying the total texture units by the core speed of the chip. The better this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly record to the local memory in one 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 outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.