GeForce GTX 950 vs Radeon HD 7990

Intro

Compare those specs to the Radeon HD 7990, which features core clock speeds of 950 MHz on the GPU, and 1500 MHz on the 3072 MB of GDDR5 memory. It features 2048 SPUs as well as 128 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

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 should be a lot (approximately 395%) faster with regards to AF than the GeForce GTX 950. (explain)

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

Pixel Rate

If running with lots of anti-aliasing is important to you, then the Radeon HD 7990 is the winner, and very much so. (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 largest amount of data (counted in MB per second) that can be transferred over the external memory interface within a second. The number is worked out by multiplying the card's interface width by its memory clock speed. If the card has DDR type memory, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the bandwidth is, 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 amount of texture map elements (texels) that are processed in one second. This number is worked out by multiplying the total number of texture units of the card by the core speed of the chip. The better this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly record to its local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.