GeForce GTS 450 vs Radeon HD 4730

Intro

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

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTS 450		106 Watts
Radeon HD 4730		140 Watts
	Difference: 34 Watts (32%)

Memory Bandwidth

Theoretically speaking, the GeForce GTS 450 should perform a little bit faster than the Radeon HD 4730 in general. (explain)

GeForce GTS 450		57728 MB/sec
Radeon HD 4730		57600 MB/sec
	Difference: 128 (0%)

Texel Rate

The GeForce GTS 450 is just a bit (approximately 12%) more effective at texture filtering than the Radeon HD 4730. (explain)

GeForce GTS 450		25056 Mtexels/sec
Radeon HD 4730		22400 Mtexels/sec
	Difference: 2656 (12%)

Pixel Rate

If using a high resolution is important to you, then the GeForce GTS 450 is a better choice, by far. (explain)

GeForce GTS 450		12528 Mpixels/sec
Radeon HD 4730		5600 Mpixels/sec
	Difference: 6928 (124%)

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 maximum amount of data (counted in megabytes per second) that can be transported across the external memory interface within a second. It's worked out by multiplying the card's bus width by its memory clock speed. If it uses DDR RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly record to the local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.