GeForce GTX 780 Ti vs Radeon HD 6950 2GB

Intro

Compare those specifications to the Radeon HD 6950 2GB, which makes use of a 40 nm design. AMD has set the core frequency at 800 MHz. The GDDR5 RAM works at a frequency of 1250 MHz on this specific card. It features 1408 SPUs as well as 88 TAUs and 32 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6950 2GB		200 Watts
GeForce GTX 780 Ti		250 Watts
	Difference: 50 Watts (25%)

Memory Bandwidth

Performance-wise, the GeForce GTX 780 Ti should in theory be a lot superior to the Radeon HD 6950 2GB overall. (explain)

GeForce GTX 780 Ti		336000 MB/sec
Radeon HD 6950 2GB		160000 MB/sec
	Difference: 176000 (110%)

Texel Rate

The GeForce GTX 780 Ti will be much (approximately 198%) better at AF than the Radeon HD 6950 2GB. (explain)

GeForce GTX 780 Ti		210000 Mtexels/sec
Radeon HD 6950 2GB		70400 Mtexels/sec
	Difference: 139600 (198%)

Pixel Rate

If using a high resolution is important to you, then the GeForce GTX 780 Ti is superior to the Radeon HD 6950 2GB, and very much so. (explain)

GeForce GTX 780 Ti		42000 Mpixels/sec
Radeon HD 6950 2GB		25600 Mpixels/sec
	Difference: 16400 (64%)

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: Bandwidth is the maximum 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 bus width by its memory clock speed. If it uses DDR memory, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied in one second. This is calculated by multiplying the total amount 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 applied in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly write to its local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.