GeForce GTX 750 Ti vs Radeon HD 7990

Intro

Compare all of that to the Radeon HD 7990, which has GPU core speed of 950 MHz, and 3072 MB of GDDR5 memory set to run at 1500 MHz through a 384-bit bus. It also is comprised of 2048 Stream Processors, 128 TAUs, 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 750 Ti		4562 points
	Difference: 10958 (240%)

Zcash Mining Hash Rate

Radeon HD 7990		513 Sol/s
GeForce GTX 750 Ti		72 Sol/s
	Difference: 441 (613%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 750 Ti		60 Watts
Radeon HD 7990		375 Watts
	Difference: 315 Watts (525%)

Memory Bandwidth

Performance-wise, the Radeon HD 7990 should theoretically be much superior to the GeForce GTX 750 Ti overall. (explain)

Radeon HD 7990		576000 MB/sec
GeForce GTX 750 Ti		86400 MB/sec
	Difference: 489600 (567%)

Texel Rate

The Radeon HD 7990 should be much (more or less 496%) better at anisotropic filtering than the GeForce GTX 750 Ti. (explain)

Radeon HD 7990		243200 Mtexels/sec
GeForce GTX 750 Ti		40800 Mtexels/sec
	Difference: 202400 (496%)

Pixel Rate

The Radeon HD 7990 should be much (approximately 273%) better at full screen anti-aliasing than the GeForce GTX 750 Ti, and also will be able to handle higher screen resolutions while still performing well. (explain)

Radeon HD 7990		60800 Mpixels/sec
GeForce GTX 750 Ti		16320 Mpixels/sec
	Difference: 44480 (273%)

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 maximum amount of data (counted in MB per second) that can be transferred past the external memory interface in one second. The number is worked out by multiplying the bus width by its memory clock speed. If it uses DDR RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, 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 are processed in one second. This number is calculated by multiplying the total number of texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly record to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Raster Operations Pipelines by the the card's 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 fill rate is also dependant on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.