Geforce GTX 690 vs Radeon HD 4730

Intro

Compare those specs to the Radeon HD 4730, which has GPU core speed of 700 MHz, and 512 MB of GDDR5 memory running at 900 MHz through a 128-bit bus. It also is comprised of 640(128x5) SPUs, 32 TAUs, and 8 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4730		140 Watts
Geforce GTX 690		300 Watts
	Difference: 160 Watts (114%)

Memory Bandwidth

In theory, the Geforce GTX 690 should be 568% quicker than the Radeon HD 4730 overall, because of its greater data rate. (explain)

Geforce GTX 690		384512 MB/sec
Radeon HD 4730		57600 MB/sec
	Difference: 326912 (568%)

Texel Rate

The Geforce GTX 690 is a lot (approximately 946%) more effective at AF than the Radeon HD 4730. (explain)

Geforce GTX 690		234240 Mtexels/sec
Radeon HD 4730		22400 Mtexels/sec
	Difference: 211840 (946%)

Pixel Rate

If running with a high resolution is important to you, then the Geforce GTX 690 is superior to the Radeon HD 4730, by a large margin. (explain)

Geforce GTX 690		58560 Mpixels/sec
Radeon HD 4730		5600 Mpixels/sec
	Difference: 52960 (946%)

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 data (in units of MB per second) that can be transferred over the external memory interface in a second. It's worked out by multiplying the card's interface width by the speed of its memory. If it uses DDR type memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the faster 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 are processed in one second. This is worked out by multiplying the total amount 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 processed in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly record to the local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of ROPs by the the card's clock speed. 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 also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.