GeForce GTX 560 Ti 448 vs Radeon HD 7990

Intro

Compare all that to the Radeon HD 7990, which uses a 28 nm design. AMD has set the core speed at 950 MHz. The GDDR5 memory is set to run at a speed of 1500 MHz on this specific model. It features 2048 SPUs along with 128 TAUs and 32 Rasterization Operator Units.

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

Radeon HD 7990		15520 points
GeForce GTX 560 Ti 448		4200 points
	Difference: 11320 (270%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 560 Ti 448		210 Watts
Radeon HD 7990		375 Watts
	Difference: 165 Watts (79%)

Memory Bandwidth

The Radeon HD 7990, in theory, should be a lot faster than the GeForce GTX 560 Ti 448 in general. (explain)

Radeon HD 7990		576000 MB/sec
GeForce GTX 560 Ti 448		144000 MB/sec
	Difference: 432000 (300%)

Texel Rate

The Radeon HD 7990 will be quite a bit (more or less 493%) better at AF than the GeForce GTX 560 Ti 448. (explain)

Radeon HD 7990		243200 Mtexels/sec
GeForce GTX 560 Ti 448		40992 Mtexels/sec
	Difference: 202208 (493%)

Pixel Rate

The Radeon HD 7990 will be much (more or less 108%) more effective at FSAA than the GeForce GTX 560 Ti 448, and also capable of handling higher screen resolutions more effectively. (explain)

Radeon HD 7990		60800 Mpixels/sec
GeForce GTX 560 Ti 448		29280 Mpixels/sec
	Difference: 31520 (108%)

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.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

Specifications

Memory Bandwidth: Bandwidth is the maximum amount of information (in units of MB per second) that can be transferred past the external memory interface in one second. It's worked out by multiplying the card's interface width by its memory clock speed. If it uses DDR memory, it must 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, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly write to the local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of colour ROPs by the the core 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 fill rate is also dependant on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.