GeForce GTX 650 Ti vs Radeon HD 4730

Intro

Compare all of that to the Radeon HD 4730, which comes with core clock speeds of 700 MHz on the GPU, and 900 MHz on the 512 MB of GDDR5 RAM. It features 640(128x5) SPUs along with 32 Texture Address Units and 8 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

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

Memory Bandwidth

Theoretically speaking, the GeForce GTX 650 Ti should be 50% faster than the Radeon HD 4730 overall, due to its greater data rate. (explain)

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

Texel Rate

The GeForce GTX 650 Ti will be much (more or less 165%) faster with regards to anisotropic filtering than the Radeon HD 4730. (explain)

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

Pixel Rate

The GeForce GTX 650 Ti will be quite a bit (about 165%) faster with regards to full screen anti-aliasing than the Radeon HD 4730, and also capable of handling higher resolutions without losing too much performance. (explain)

GeForce GTX 650 Ti		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: Memory bandwidth is the maximum amount of data (in units of MB per second) that can be transported across the external memory interface within a second. It's calculated by multiplying the interface width by the speed of its memory. In the case of DDR type memory, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed per second. This is calculated by multiplying the total number of texture units of the card by the core clock speed of the chip. The better 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 most pixels that the graphics chip can possibly record to the local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the number of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.