GeForce GTX 950 vs Radeon HD 7990

Intro

Compare all of that to the Radeon HD 7990, which comes with GPU core speed of 950 MHz, and 3072 MB of GDDR5 RAM running at 1500 MHz through a 384-bit bus. It also features 2048 SPUs, 128 Texture Address Units, and 32 ROPs.

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

Radeon HD 7990		15520 points
GeForce GTX 950		6536 points
	Difference: 8984 (137%)

Ethereum Mining Hash Rate

Radeon HD 7990		32 Mh/s
GeForce GTX 950		10 Mh/s
	Difference: 22 (220%)

Zcash Mining Hash Rate

Radeon HD 7990		513 Sol/s
GeForce GTX 950		155 Sol/s
	Difference: 358 (231%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 950		90 Watts
Radeon HD 7990		375 Watts
	Difference: 285 Watts (317%)

Memory Bandwidth

The Radeon HD 7990 should in theory perform a lot faster than the GeForce GTX 950 overall. (explain)

Radeon HD 7990		576000 MB/sec
GeForce GTX 950		105728 MB/sec
	Difference: 470272 (445%)

Texel Rate

The Radeon HD 7990 is much (about 395%) more effective at texture filtering than the GeForce GTX 950. (explain)

Radeon HD 7990		243200 Mtexels/sec
GeForce GTX 950		49152 Mtexels/sec
	Difference: 194048 (395%)

Pixel Rate

The Radeon HD 7990 is a lot (about 86%) more effective at full screen anti-aliasing than the GeForce GTX 950, and should be able to handle higher screen resolutions without slowing down too much. (explain)

Radeon HD 7990		60800 Mpixels/sec
GeForce GTX 950		32768 Mpixels/sec
	Difference: 28032 (86%)

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 MB per second) that can be moved across the external memory interface within a second. It's calculated by multiplying the card's interface width by the speed of its memory. If the card has DDR type RAM, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better 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 calculated by multiplying the total amount of texture units by the core speed of the chip. The higher this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the most pixels the video card could possibly record to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the max fill rate.