GeForce GTX 950 vs Radeon HD 6990

Intro

Compare those specifications to the Radeon HD 6990, which comes with GPU clock speed of 830 MHz, and 2048 MB of GDDR5 RAM running at 1250 MHz through a 256-bit bus. It also features 1536 SPUs, 96 TAUs, and 32 ROPs.

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

The Radeon HD 6990, in theory, should perform a lot 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 should be much (more or less 224%) more effective at texture filtering than the GeForce GTX 950. (explain)

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

Pixel Rate

The Radeon HD 6990 will be quite a bit (approximately 62%) faster with regards to anti-aliasing than the GeForce GTX 950, and will be able to handle higher resolutions more effectively. (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 maximum amount of data (counted in megabytes per second) that can be moved past the external memory interface in a second. The number is worked out by multiplying the bus width by the speed of its memory. If the card has DDR type memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed per second. This is worked out by multiplying the total number of texture units of the card by the core speed of the chip. The higher this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly write to its local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of colour ROPs 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 rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.