Geforce GTX 690 vs Radeon HD 7790

Intro

Compare all of that to the Radeon HD 7790, which uses a 28 nm design. AMD has set the core frequency at 1000 MHz. The GDDR5 memory runs at a speed of 1500 MHz on this model. It features 896 SPUs as well as 56 Texture Address Units and 16 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

Geforce GTX 690		13111 points
Radeon HD 7790		4330 points
	Difference: 8781 (203%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7790		85 Watts
Geforce GTX 690		300 Watts
	Difference: 215 Watts (253%)

Memory Bandwidth

Theoretically speaking, the Geforce GTX 690 will be 301% quicker than the Radeon HD 7790 overall, because of its higher bandwidth. (explain)

Geforce GTX 690		384512 MB/sec
Radeon HD 7790		96000 MB/sec
	Difference: 288512 (301%)

Texel Rate

The Geforce GTX 690 is a lot (more or less 318%) faster with regards to texture filtering than the Radeon HD 7790. (explain)

Geforce GTX 690		234240 Mtexels/sec
Radeon HD 7790		56000 Mtexels/sec
	Difference: 178240 (318%)

Pixel Rate

The Geforce GTX 690 will be quite a bit (approximately 266%) more effective at AA than the Radeon HD 7790, and also should be able to handle higher resolutions better. (explain)

Geforce GTX 690		58560 Mpixels/sec
Radeon HD 7790		16000 Mpixels/sec
	Difference: 42560 (266%)

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 (measured in megabytes per second) that can be transferred past the external memory interface in one second. It's calculated by multiplying the card's bus width by the speed of its memory. If the card has DDR RAM, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the card's 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 texture map elements (texels) that are applied in one second. This figure is calculated by multiplying the total number of texture units of the card by the core clock speed of the chip. The better this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip can possibly record to the local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.