GeForce RTX 2060 vs Radeon HD 6990

Intro

Compare those specifications to the Radeon HD 6990, which has core clock speeds of 830 MHz on the GPU, and 1250 MHz on the 2048 MB of GDDR5 memory. It features 1536 SPUs along with 96 Texture Address Units and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce RTX 2060		160 Watts
Radeon HD 6990		375 Watts
	Difference: 215 Watts (134%)

Memory Bandwidth

As far as performance goes, the GeForce RTX 2060 should theoretically be just a bit superior to the Radeon HD 6990 overall. (explain)

GeForce RTX 2060		344064 MB/sec
Radeon HD 6990		320000 MB/sec
	Difference: 24064 (8%)

Texel Rate

The GeForce RTX 2060 should be just a bit (more or less 3%) more effective at texture filtering than the Radeon HD 6990. (explain)

GeForce RTX 2060		163800 Mtexels/sec
Radeon HD 6990		159360 Mtexels/sec
	Difference: 4440 (3%)

Pixel Rate

The GeForce RTX 2060 should be quite a bit (approximately 23%) faster with regards to anti-aliasing than the Radeon HD 6990, and also should be capable of handling higher resolutions without losing too much performance. (explain)

GeForce RTX 2060		65520 Mpixels/sec
Radeon HD 6990		53120 Mpixels/sec
	Difference: 12400 (23%)

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 max amount of data (measured in megabytes per second) that can be transferred over the external memory interface within a second. The number is worked out by multiplying the bus width by the speed of its memory. If the card has DDR type RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, 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 processed per second. This figure is calculated by multiplying the total number of texture units of the card by the core clock speed of the chip. The better this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card can possibly record to its local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the number of colour ROPs by the clock speed of the card. 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 also depends on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.