GeForce GTX 960 vs Radeon HD 6990

Intro

Compare those specifications to the Radeon HD 6990, which features core speeds of 830 MHz on the GPU, and 1250 MHz on the 2048 MB of GDDR5 memory. It features 1536 SPUs as well as 96 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

GeForce GTX 960		7627 points
Radeon HD 6990		5820 points
	Difference: 1807 (31%)

Ethereum Mining Hash Rate

Radeon HD 6990		24 Mh/s
GeForce GTX 960		11 Mh/s
	Difference: 13 (118%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 960		120 Watts
Radeon HD 6990		375 Watts
	Difference: 255 Watts (213%)

Memory Bandwidth

In theory, the Radeon HD 6990 should perform a lot faster than the GeForce GTX 960 in general. (explain)

Radeon HD 6990		320000 MB/sec
GeForce GTX 960		112000 MB/sec
	Difference: 208000 (186%)

Texel Rate

The Radeon HD 6990 should be quite a bit (approximately 121%) faster with regards to anisotropic filtering than the GeForce GTX 960. (explain)

Radeon HD 6990		159360 Mtexels/sec
GeForce GTX 960		72128 Mtexels/sec
	Difference: 87232 (121%)

Pixel Rate

The Radeon HD 6990 is a lot (approximately 47%) more effective at FSAA than the GeForce GTX 960, and also will be able to handle higher screen resolutions without slowing down too much. (explain)

Radeon HD 6990		53120 Mpixels/sec
GeForce GTX 960		36064 Mpixels/sec
	Difference: 17056 (47%)

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 data (measured in MB per second) that can be transported past the external memory interface within a second. It is worked out by multiplying the card's bus width by its memory clock speed. If it uses DDR memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed per second. This number is calculated 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 per second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card can possibly record to its local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.