GeForce GTX 280 vs Radeon HD 6450 (OEM)

Intro

Compare those specifications to the Radeon HD 6450 (OEM), which comes with core clock speeds of 625 MHz on the GPU, and 800 MHz on the 512 MB of GDDR3 memory. It features 160 SPUs as well as 8 Texture Address Units and 4 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6450 (OEM)		31 Watts
GeForce GTX 280		236 Watts
	Difference: 205 Watts (661%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 280 will be 1007% quicker than the Radeon HD 6450 (OEM) overall, because of its higher data rate. (explain)

GeForce GTX 280		141696 MB/sec
Radeon HD 6450 (OEM)		12800 MB/sec
	Difference: 128896 (1007%)

Texel Rate

The GeForce GTX 280 will be a lot (more or less 863%) faster with regards to texture filtering than the Radeon HD 6450 (OEM). (explain)

GeForce GTX 280		48160 Mtexels/sec
Radeon HD 6450 (OEM)		5000 Mtexels/sec
	Difference: 43160 (863%)

Pixel Rate

If running with a high resolution is important to you, then the GeForce GTX 280 is a better choice, by far. (explain)

GeForce GTX 280		19264 Mpixels/sec
Radeon HD 6450 (OEM)		2500 Mpixels/sec
	Difference: 16764 (671%)

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 moved across the external memory interface in one second. The number is calculated by multiplying the card's interface width by the speed of its memory. If the card has DDR type memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the card's 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 number of texture map elements (texels) that can be applied in one second. This is calculated by multiplying the total number of texture units by the core 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 per second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card 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 amount of Raster Operations Pipelines by the the core speed of the card. 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 is also dependant on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.