GeForce GT 340 1GB vs Radeon HD 4550 512MB

Intro

Compare those specifications to the Radeon HD 4550 512MB, which has core speeds of 600 MHz on the GPU, and 800 MHz on the 512 MB of GDDR3 RAM. It features 80(16x5) SPUs along with 8 TAUs and 4 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4550 512MB		25 Watts
GeForce GT 340 1GB		69 Watts
	Difference: 44 Watts (176%)

Memory Bandwidth

The GeForce GT 340 1GB, in theory, should perform much faster than the Radeon HD 4550 512MB overall. (explain)

GeForce GT 340 1GB		54400 MB/sec
Radeon HD 4550 512MB		12800 MB/sec
	Difference: 41600 (325%)

Texel Rate

The GeForce GT 340 1GB will be quite a bit (approximately 267%) faster with regards to anisotropic filtering than the Radeon HD 4550 512MB. (explain)

GeForce GT 340 1GB		17600 Mtexels/sec
Radeon HD 4550 512MB		4800 Mtexels/sec
	Difference: 12800 (267%)

Pixel Rate

The GeForce GT 340 1GB will be much (about 83%) faster with regards to AA than the Radeon HD 4550 512MB, and also should be able to handle higher resolutions more effectively. (explain)

GeForce GT 340 1GB		4400 Mpixels/sec
Radeon HD 4550 512MB		2400 Mpixels/sec
	Difference: 2000 (83%)

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 information (counted in megabytes per second) that can be moved over the external memory interface within a second. The number is calculated by multiplying the interface width by its memory speed. If the card has DDR RAM, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, 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 amount of texture map elements (texels) that can be applied per second. This is worked out 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 texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

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