GeForce GTX 960 vs Radeon HD 7990

Intro

Compare those specifications to the Radeon HD 7990, which uses a 28 nm design. AMD has set the core speed at 950 MHz. The GDDR5 memory is set to run at a frequency of 1500 MHz on this particular card. It features 2048 SPUs as well as 128 TAUs 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 960		7627 points
	Difference: 7893 (103%)

Zcash Mining Hash Rate

Radeon HD 7990		513 Sol/s
GeForce GTX 960		154 Sol/s
	Difference: 359 (233%)

Ethereum Mining Hash Rate

Radeon HD 7990		32 Mh/s
GeForce GTX 960		11 Mh/s
	Difference: 21 (191%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 960		120 Watts
Radeon HD 7990		375 Watts
	Difference: 255 Watts (213%)

Memory Bandwidth

In theory, the Radeon HD 7990 will be 414% faster than the GeForce GTX 960 in general, due to its greater data rate. (explain)

Radeon HD 7990		576000 MB/sec
GeForce GTX 960		112000 MB/sec
	Difference: 464000 (414%)

Texel Rate

The Radeon HD 7990 is quite a bit (approximately 237%) faster with regards to AF than the GeForce GTX 960. (explain)

Radeon HD 7990		243200 Mtexels/sec
GeForce GTX 960		72128 Mtexels/sec
	Difference: 171072 (237%)

Pixel Rate

The Radeon HD 7990 is a lot (about 69%) faster with regards to AA than the GeForce GTX 960, and should be able to handle higher resolutions more effectively. (explain)

Radeon HD 7990		60800 Mpixels/sec
GeForce GTX 960		36064 Mpixels/sec
	Difference: 24736 (69%)

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 information (measured in megabytes per second) that can be moved past the external memory interface within a second. It's calculated by multiplying the card's interface width by the speed of its memory. If it uses DDR memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the faster the card will be in general. It especially helps with AA, 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 is calculated by multiplying the total number of texture units by the core clock speed of the chip. The higher the texel rate, the better the graphics 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 maximum number of pixels that the graphics chip could possibly write to its local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.