GeForce 8800 GT 256MB vs Radeon HD 6450 (OEM)

Intro

Compare that to the Radeon HD 6450 (OEM), which comes with core speeds of 625 MHz on the GPU, and 800 MHz on the 512 MB of GDDR3 memory. It features 160 SPUs along with 8 TAUs 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 8800 GT 256MB		105 Watts
	Difference: 74 Watts (239%)

Memory Bandwidth

The GeForce 8800 GT 256MB should theoretically perform quite a bit faster than the Radeon HD 6450 (OEM) overall. (explain)

GeForce 8800 GT 256MB		44800 MB/sec
Radeon HD 6450 (OEM)		12800 MB/sec
	Difference: 32000 (250%)

Texel Rate

The GeForce 8800 GT 256MB is much (more or less 572%) better at AF than the Radeon HD 6450 (OEM). (explain)

GeForce 8800 GT 256MB		33600 Mtexels/sec
Radeon HD 6450 (OEM)		5000 Mtexels/sec
	Difference: 28600 (572%)

Pixel Rate

The GeForce 8800 GT 256MB should be quite a bit (approximately 284%) more effective at anti-aliasing than the Radeon HD 6450 (OEM), and should be capable of handling higher resolutions while still performing well. (explain)

GeForce 8800 GT 256MB		9600 Mpixels/sec
Radeon HD 6450 (OEM)		2500 Mpixels/sec
	Difference: 7100 (284%)

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 maximum amount of data (in units of MB per second) that can be transferred past the external memory interface in a second. It is worked out by multiplying the interface width by its memory speed. If the card has DDR RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied in one second. This is calculated by multiplying the total texture units by the core clock speed of the chip. The higher this number, 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 most pixels that the graphics chip can possibly write to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of colour ROPs 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 output rate also depends on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.