GeForce GT 1030 vs Radeon HD 7990

Intro

Compare all that to the Radeon HD 7990, which features a clock frequency of 950 MHz and a GDDR5 memory speed of 1500 MHz. It also uses a 384-bit memory bus, and makes use of a 28 nm design. It is made up of 2048 SPUs, 128 TAUs, and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 1030		30 Watts
Radeon HD 7990		375 Watts
	Difference: 345 Watts (1150%)

Memory Bandwidth

The Radeon HD 7990 should in theory perform a lot faster than the GeForce GT 1030 in general. (explain)

Radeon HD 7990		576000 MB/sec
GeForce GT 1030		49152 MB/sec
	Difference: 526848 (1072%)

Texel Rate

The Radeon HD 7990 will be much (about 501%) more effective at AF than the GeForce GT 1030. (explain)

Radeon HD 7990		243200 Mtexels/sec
GeForce GT 1030		40480 Mtexels/sec
	Difference: 202720 (501%)

Pixel Rate

The Radeon HD 7990 should be quite a bit (approximately 200%) better at FSAA than the GeForce GT 1030, and also capable of handling higher resolutions more effectively. (explain)

Radeon HD 7990		60800 Mpixels/sec
GeForce GT 1030		20240 Mpixels/sec
	Difference: 40560 (200%)

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 information (counted in megabytes per second) that can be transferred across the external memory interface within a second. The number is worked out by multiplying the card's bus width by the speed of its memory. In the case of DDR type memory, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied per second. This figure is worked out by multiplying the total amount of texture units by the core clock speed of the chip. The higher this number, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly write to its local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.