GeForce GTX 950 vs Radeon HD 7990

Intro

Compare those specifications to the Radeon HD 7990, which features a clock frequency of 950 MHz and a GDDR5 memory speed of 1500 MHz. It also features a 384-bit memory bus, and makes use of a 28 nm design. It is made up of 2048 SPUs, 128 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

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

In theory, the Radeon HD 7990 should perform much 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 (about 395%) more effective at anisotropic 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 should be quite a bit (more or less 86%) faster with regards to anti-aliasing than the GeForce GTX 950, and also able to handle higher resolutions more effectively. (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: Memory bandwidth is the max amount of information (in units of megabytes per second) that can be transported over the external memory interface in a second. The number is worked out by multiplying the card's bus width by the speed of its memory. If the card has DDR type memory, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed per second. This figure is calculated by multiplying the total amount 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 handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card can possibly record to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the number of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.