Radeon HD 7790 vs Radeon Pro Duo

Intro

Compare those specifications to the Radeon Pro Duo, which comes with a clock speed of 1000 MHz and a HBM memory frequency of 500 MHz. It also uses a 4096-bit bus, and makes use of a 28 nm design. It is comprised of 4096 SPUs, 256 TAUs, and 64 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 Pro Duo		27167 points
Radeon HD 7790		4330 points
	Difference: 22837 (527%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7790		85 Watts
Radeon Pro Duo		350 Watts
	Difference: 265 Watts (312%)

Memory Bandwidth

Performance-wise, the Radeon Pro Duo should in theory be much superior to the Radeon HD 7790 overall. (explain)

Radeon Pro Duo		1024000 MB/sec
Radeon HD 7790		96000 MB/sec
	Difference: 928000 (967%)

Texel Rate

The Radeon Pro Duo will be much (approximately 814%) better at texture filtering than the Radeon HD 7790. (explain)

Radeon Pro Duo		512000 Mtexels/sec
Radeon HD 7790		56000 Mtexels/sec
	Difference: 456000 (814%)

Pixel Rate

If using high levels of AA is important to you, then the Radeon Pro Duo is superior to the Radeon HD 7790, and very much so. (explain)

Radeon Pro Duo		128000 Mpixels/sec
Radeon HD 7790		16000 Mpixels/sec
	Difference: 112000 (700%)

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 across the external memory interface in one second. The number is calculated by multiplying the card's interface width by its memory speed. If it uses DDR RAM, it should be multiplied by 2 once 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 high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed per second. This figure is calculated by multiplying the total number of texture units by the core clock speed of the chip. The higher this number, the better the video 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 in a second - measured in millions of pixels per second. The number is worked out 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 rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.