GeForce GTX 1070 vs Radeon HD 6990

Intro

Compare those specifications to the Radeon HD 6990, which uses a 40 nm design. AMD has set the core frequency at 830 MHz. The GDDR5 memory is set to run at a frequency of 1250 MHz on this particular card. 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

GeForce GTX 1070		18174 points
Radeon HD 6990		5820 points
	Difference: 12354 (212%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 1070		150 Watts
Radeon HD 6990		375 Watts
	Difference: 225 Watts (150%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 6990 should perform a lot faster than the GeForce GTX 1070 in general. (explain)

Radeon HD 6990		320000 MB/sec
GeForce GTX 1070		262144 MB/sec
	Difference: 57856 (22%)

Texel Rate

The GeForce GTX 1070 should be a bit (approximately 13%) more effective at AF than the Radeon HD 6990. (explain)

GeForce GTX 1070		180720 Mtexels/sec
Radeon HD 6990		159360 Mtexels/sec
	Difference: 21360 (13%)

Pixel Rate

The GeForce GTX 1070 is a lot (about 81%) more effective at AA than the Radeon HD 6990, and also should be able to handle higher resolutions without losing too much performance. (explain)

GeForce GTX 1070		96384 Mpixels/sec
Radeon HD 6990		53120 Mpixels/sec
	Difference: 43264 (81%)

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 data (measured in megabytes per second) that can be transferred past the external memory interface within a second. The number is calculated by multiplying the bus width by the speed of its memory. If it uses DDR RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed in one second. This figure is worked out by multiplying the total number of texture units by the core clock speed of the chip. The better the texel rate, 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 that the graphics chip can possibly record to its local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). 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 max fill rate.