GeForce RTX 2060 vs Radeon HD 6990

Intro

Compare those specifications to the Radeon HD 6990, which comes with GPU core speed of 830 MHz, and 2048 MB of GDDR5 RAM set to run at 1250 MHz through a 256-bit bus. It also features 1536 SPUs, 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

The GeForce RTX 2060 should in theory be a small bit faster than the Radeon HD 6990 in general. (explain)

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

Texel Rate

The GeForce RTX 2060 should be a bit (about 3%) better at AF than the Radeon HD 6990. (explain)

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

Pixel Rate

If running with a high screen resolution is important to you, then the GeForce RTX 2060 is a better choice, by a large margin. (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: Bandwidth is the max amount of information (in units of megabytes per second) that can be moved past the external memory interface in a second. It's calculated by multiplying the interface width by its memory speed. If the card has DDR RAM, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher 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 can be applied per second. This number is worked out by multiplying the total number of texture units by the core clock speed of the chip. The better this number, 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 number of pixels the video card could possibly write to the local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.