GeForce GTX 650 Ti vs Radeon HD 7950 3GB

Intro

Compare that to the Radeon HD 7950 3GB, which uses a 28 nm design. AMD has set the core speed at 800 MHz. The GDDR5 RAM is set to run at a frequency of 1250 MHz on this particular card. It features 1792 SPUs along with 112 Texture Address Units and 32 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 650 Ti		110 Watts
Radeon HD 7950 3GB		200 Watts
	Difference: 90 Watts (82%)

Memory Bandwidth

The Radeon HD 7950 3GB should theoretically be a lot faster than the GeForce GTX 650 Ti in general. (explain)

Radeon HD 7950 3GB		240000 MB/sec
GeForce GTX 650 Ti		86400 MB/sec
	Difference: 153600 (178%)

Texel Rate

The Radeon HD 7950 3GB should be quite a bit (more or less 51%) better at anisotropic filtering than the GeForce GTX 650 Ti. (explain)

Radeon HD 7950 3GB		89600 Mtexels/sec
GeForce GTX 650 Ti		59392 Mtexels/sec
	Difference: 30208 (51%)

Pixel Rate

If running with high levels of AA is important to you, then the Radeon HD 7950 3GB is superior to the GeForce GTX 650 Ti, by a large margin. (explain)

Radeon HD 7950 3GB		25600 Mpixels/sec
GeForce GTX 650 Ti		14848 Mpixels/sec
	Difference: 10752 (72%)

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 (in units of megabytes per second) that can be transported over the external memory interface within a second. It's worked out by multiplying the bus width by its memory speed. In the case of DDR type RAM, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed per second. This figure is calculated by multiplying the total number of texture units by the core clock 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 in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly write to its local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the number of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.