GeForce GT 340 1GB vs Radeon HD 5450

Intro

Compare those specifications to the Radeon HD 5450, which has core speeds of 650 MHz on the GPU, and 800 MHz on the 512 MB of DDR3 memory. It features 80(16x5) SPUs as well as 8 Texture Address Units and 4 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5450		19 Watts
GeForce GT 340 1GB		69 Watts
	Difference: 50 Watts (263%)

Memory Bandwidth

In theory, the GeForce GT 340 1GB is 325% quicker than the Radeon HD 5450 in general, because of its greater data rate. (explain)

GeForce GT 340 1GB		54400 MB/sec
Radeon HD 5450		12800 MB/sec
	Difference: 41600 (325%)

Texel Rate

The GeForce GT 340 1GB is a lot (approximately 238%) better at AF than the Radeon HD 5450. (explain)

GeForce GT 340 1GB		17600 Mtexels/sec
Radeon HD 5450		5200 Mtexels/sec
	Difference: 12400 (238%)

Pixel Rate

If using a high resolution is important to you, then the GeForce GT 340 1GB is superior to the Radeon HD 5450, by a large margin. (explain)

GeForce GT 340 1GB		4400 Mpixels/sec
Radeon HD 5450		2600 Mpixels/sec
	Difference: 1800 (69%)

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 max amount of information (counted in MB per second) that can be transferred past the external memory interface in a second. It is calculated by multiplying the bus width by its memory speed. If it uses DDR memory, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied per second. This figure is calculated by multiplying the total amount 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 per second.

Pixel Rate: Pixel rate is the most pixels the video card can possibly record to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as 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, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.