GeForce GT 240 GDDR5 1GB vs Radeon HD 5450

Intro

Compare those specifications to the Radeon HD 5450, which has GPU core speed of 650 MHz, and 512 MB of DDR3 RAM set to run at 800 MHz through a 64-bit bus. It also is made up of 80(16x5) SPUs, 8 Texture Address Units, and 4 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5450		19 Watts
GeForce GT 240 GDDR5 1GB		70 Watts
	Difference: 51 Watts (268%)

Memory Bandwidth

The GeForce GT 240 GDDR5 1GB should in theory perform a lot faster than the Radeon HD 5450 overall. (explain)

GeForce GT 240 GDDR5 1GB		54400 MB/sec
Radeon HD 5450		12800 MB/sec
	Difference: 41600 (325%)

Texel Rate

The GeForce GT 240 GDDR5 1GB will be much (more or less 238%) better at AF than the Radeon HD 5450. (explain)

GeForce GT 240 GDDR5 1GB		17600 Mtexels/sec
Radeon HD 5450		5200 Mtexels/sec
	Difference: 12400 (238%)

Pixel Rate

The GeForce GT 240 GDDR5 1GB should be a lot (about 69%) faster with regards to full screen anti-aliasing than the Radeon HD 5450, and able to handle higher resolutions more effectively. (explain)

GeForce GT 240 GDDR5 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 largest amount of data (counted in MB per second) that can be transported across the external memory interface within a second. It is worked out by multiplying the interface width by its memory speed. If the card has DDR memory, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher 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 amount of texture map elements (texels) that are applied per second. This number is calculated by multiplying the total amount of texture units of the card by the core clock speed of the chip. The higher this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip 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 ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max fill rate.