GeForce GTX 1070 vs Radeon HD 6990

Intro

Compare those specifications to the Radeon HD 6990, which has a core clock frequency of 830 MHz and a GDDR5 memory frequency of 1250 MHz. It also makes use of a 256-bit bus, and makes use of a 40 nm design. It is made up of 1536 SPUs, 96 Texture Address Units, and 32 Raster Operation Units.

Display Graphs

Hide Graphs

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 will be 22% faster than the GeForce GTX 1070 in general, because of its greater bandwidth. (explain)

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

Texel Rate

The GeForce GTX 1070 is a bit (approximately 13%) better at anisotropic filtering than the Radeon HD 6990. (explain)

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

Pixel Rate

If running with lots of anti-aliasing is important to you, then the GeForce GTX 1070 is superior to the Radeon HD 6990, by a large margin. (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: Memory bandwidth is the largest amount of information (in units of MB per second) that can be transferred across the external memory interface within a second. It's worked out by multiplying the interface width by its memory clock speed. If it uses DDR type memory, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, 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 number of texture map elements (texels) that can be applied per second. This is calculated by multiplying the total texture units by the core clock speed of the chip. The higher the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly write to its local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Render Output Units by the clock 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 fill 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.