GeForce GTX 650 Ti vs Radeon HD 6990

Intro

Compare all that to the Radeon HD 6990, which uses a 40 nm design. AMD has set the core frequency at 830 MHz. The GDDR5 RAM works at a frequency of 1250 MHz on this specific card. It features 1536 SPUs as well as 96 Texture Address Units and 32 ROPs.

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 650 Ti		3434 points
	Difference: 2386 (69%)

Ethereum Mining Hash Rate

Radeon HD 6990		24 Mh/s
GeForce GTX 650 Ti		10 Mh/s
	Difference: 14 (140%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 650 Ti		110 Watts
Radeon HD 6990		375 Watts
	Difference: 265 Watts (241%)

Memory Bandwidth

The Radeon HD 6990, in theory, should be much faster than the GeForce GTX 650 Ti overall. (explain)

Radeon HD 6990		320000 MB/sec
GeForce GTX 650 Ti		86400 MB/sec
	Difference: 233600 (270%)

Texel Rate

The Radeon HD 6990 should be much (about 168%) more effective at texture filtering than the GeForce GTX 650 Ti. (explain)

Radeon HD 6990		159360 Mtexels/sec
GeForce GTX 650 Ti		59392 Mtexels/sec
	Difference: 99968 (168%)

Pixel Rate

If running with a high resolution is important to you, then the Radeon HD 6990 is superior to the GeForce GTX 650 Ti, by far. (explain)

Radeon HD 6990		53120 Mpixels/sec
GeForce GTX 650 Ti		14848 Mpixels/sec
	Difference: 38272 (258%)

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: Memory bandwidth is the maximum amount of data (in units of MB per second) that can be moved across the external memory interface in one second. It's calculated by multiplying the interface width by the speed of its memory. If the card has DDR type RAM, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly write to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Render Output Units 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 output rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.