Geforce GTX 770 vs Radeon HD 4730

Intro

Compare those specs to the Radeon HD 4730, which comes with GPU clock speed of 700 MHz, and 512 MB of GDDR5 memory set to run at 900 MHz through a 128-bit bus. It also is made up of 640(128x5) SPUs, 32 Texture Address Units, and 8 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4730		140 Watts
Geforce GTX 770		230 Watts
	Difference: 90 Watts (64%)

Memory Bandwidth

Theoretically speaking, the Geforce GTX 770 should be 290% faster than the Radeon HD 4730 in general, due to its higher data rate. (explain)

Geforce GTX 770		224384 MB/sec
Radeon HD 4730		57600 MB/sec
	Difference: 166784 (290%)

Texel Rate

The Geforce GTX 770 is quite a bit (more or less 498%) better at AF than the Radeon HD 4730. (explain)

Geforce GTX 770		133888 Mtexels/sec
Radeon HD 4730		22400 Mtexels/sec
	Difference: 111488 (498%)

Pixel Rate

If using a high screen resolution is important to you, then the Geforce GTX 770 is superior to the Radeon HD 4730, and very much so. (explain)

Geforce GTX 770		33472 Mpixels/sec
Radeon HD 4730		5600 Mpixels/sec
	Difference: 27872 (498%)

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.

Price Comparison

Specifications

Memory Bandwidth: Bandwidth is the max amount of information (counted in MB per second) that can be transported across the external memory interface in a second. It is calculated by multiplying the interface width by its memory clock speed. In the case of DDR type RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied in one second. This number is worked out by multiplying the total amount of texture units of the card by the core 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 in one second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card 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 colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the max fill rate.