GeForce GTX 950 vs Radeon HD 6990

Intro

Compare those specs to the Radeon HD 6990, which has a core clock speed of 830 MHz and a GDDR5 memory frequency of 1250 MHz. It also features a 256-bit memory bus, and uses 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 950		6536 points
Radeon HD 6990		5820 points
	Difference: 716 (12%)

Ethereum Mining Hash Rate

Radeon HD 6990		24 Mh/s
GeForce GTX 950		10 Mh/s
	Difference: 14 (140%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 950		90 Watts
Radeon HD 6990		375 Watts
	Difference: 285 Watts (317%)

Memory Bandwidth

Theoretically, the Radeon HD 6990 should perform quite a bit faster than the GeForce GTX 950 in general. (explain)

Radeon HD 6990		320000 MB/sec
GeForce GTX 950		105728 MB/sec
	Difference: 214272 (203%)

Texel Rate

The Radeon HD 6990 is a lot (approximately 224%) better at anisotropic filtering than the GeForce GTX 950. (explain)

Radeon HD 6990		159360 Mtexels/sec
GeForce GTX 950		49152 Mtexels/sec
	Difference: 110208 (224%)

Pixel Rate

If running with a high screen resolution is important to you, then the Radeon HD 6990 is superior to the GeForce GTX 950, and very much so. (explain)

Radeon HD 6990		53120 Mpixels/sec
GeForce GTX 950		32768 Mpixels/sec
	Difference: 20352 (62%)

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 data (in units of megabytes per second) that can be moved across the external memory interface in one second. The number is worked out by multiplying the card's bus width by the speed of its memory. In the case of DDR type memory, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's 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 processed per second. This figure is calculated by multiplying the total texture units of the card by the core speed of the chip. The higher this number, 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 maximum number of pixels that the graphics card could possibly write to its local memory per second - measured in millions of pixels per second. Pixel rate is calculated 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 drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.