GeForce GTX 750 vs Radeon HD 6990

Intro

Compare those specs to the Radeon HD 6990, which comes with core speeds of 830 MHz on the GPU, and 1250 MHz on the 2048 MB of GDDR5 RAM. It features 1536 SPUs along with 96 Texture Address Units 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 6990		5820 points
GeForce GTX 750		3958 points
	Difference: 1862 (47%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 750		55 Watts
Radeon HD 6990		375 Watts
	Difference: 320 Watts (582%)

Memory Bandwidth

The Radeon HD 6990, in theory, should be much faster than the GeForce GTX 750 overall. (explain)

Radeon HD 6990		320000 MB/sec
GeForce GTX 750		80000 MB/sec
	Difference: 240000 (300%)

Texel Rate

The Radeon HD 6990 is a lot (approximately 388%) faster with regards to texture filtering than the GeForce GTX 750. (explain)

Radeon HD 6990		159360 Mtexels/sec
GeForce GTX 750		32640 Mtexels/sec
	Difference: 126720 (388%)

Pixel Rate

The Radeon HD 6990 is much (about 225%) faster with regards to FSAA than the GeForce GTX 750, and capable of handling higher resolutions better. (explain)

Radeon HD 6990		53120 Mpixels/sec
GeForce GTX 750		16320 Mpixels/sec
	Difference: 36800 (225%)

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 largest amount of data (measured in MB per second) that can be moved across the external memory interface in a second. It's calculated by multiplying the interface width by its memory speed. If it uses DDR type memory, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and high 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 amount of texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly write to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.