GeForce GTX 650 Ti 2GB vs Radeon HD 4730

Intro

Compare those specifications to the Radeon HD 4730, which comes with clock speeds of 700 MHz on the GPU, and 900 MHz on the 512 MB of GDDR5 RAM. It features 640(128x5) SPUs as well as 32 TAUs and 8 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 650 Ti 2GB		110 Watts
Radeon HD 4730		140 Watts
	Difference: 30 Watts (27%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 650 Ti 2GB should be 50% quicker than the Radeon HD 4730 in general, because of its greater bandwidth. (explain)

GeForce GTX 650 Ti 2GB		86400 MB/sec
Radeon HD 4730		57600 MB/sec
	Difference: 28800 (50%)

Texel Rate

The GeForce GTX 650 Ti 2GB is a lot (more or less 165%) better at texture filtering than the Radeon HD 4730. (explain)

GeForce GTX 650 Ti 2GB		59392 Mtexels/sec
Radeon HD 4730		22400 Mtexels/sec
	Difference: 36992 (165%)

Pixel Rate

The GeForce GTX 650 Ti 2GB will be much (more or less 165%) better at AA than the Radeon HD 4730, and also will be able to handle higher resolutions without losing too much performance. (explain)

GeForce GTX 650 Ti 2GB		14848 Mpixels/sec
Radeon HD 4730		5600 Mpixels/sec
	Difference: 9248 (165%)

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 largest amount of data (counted in MB per second) that can be moved over the external memory interface in one second. The number is calculated by multiplying the interface width by the speed of its memory. If it uses DDR memory, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher 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 number of texture map elements (texels) that can be processed per second. This is worked out by multiplying the total texture units 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 per second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly write to its local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.