GeForce GTS 450 1GB vs Radeon HD 4730

Intro

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

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTS 450 1GB		106 Watts
Radeon HD 4730		140 Watts
	Difference: 34 Watts (32%)

Memory Bandwidth

As far as performance goes, the GeForce GTS 450 1GB should in theory be a bit better than the Radeon HD 4730 in general. (explain)

GeForce GTS 450 1GB		57728 MB/sec
Radeon HD 4730		57600 MB/sec
	Difference: 128 (0%)

Texel Rate

The GeForce GTS 450 1GB is just a bit (about 12%) more effective at anisotropic filtering than the Radeon HD 4730. (explain)

GeForce GTS 450 1GB		25056 Mtexels/sec
Radeon HD 4730		22400 Mtexels/sec
	Difference: 2656 (12%)

Pixel Rate

If using high levels of AA is important to you, then the GeForce GTS 450 1GB is the winner, by far. (explain)

GeForce GTS 450 1GB		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 largest amount of data (measured in megabytes per second) that can be transferred over the external memory interface in one second. The number is worked out by multiplying the card's bus width by its memory speed. If the card has DDR type memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better 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 can be applied per second. This figure is worked out by multiplying the total number of texture units of the card by the core speed of the chip. The better the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly write to the local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.