GeForce 8800 GTS (G80) 320MB vs Radeon HD 6450 (OEM)

Intro

Compare those specifications to the Radeon HD 6450 (OEM), which features 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 TAUs and 4 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6450 (OEM)		31 Watts
GeForce 8800 GTS (G80) 320MB		143 Watts
	Difference: 112 Watts (361%)

Memory Bandwidth

Theoretically, the GeForce 8800 GTS (G80) 320MB should perform a lot faster than the Radeon HD 6450 (OEM) in general. (explain)

GeForce 8800 GTS (G80) 320MB		63360 MB/sec
Radeon HD 6450 (OEM)		12800 MB/sec
	Difference: 50560 (395%)

Texel Rate

The GeForce 8800 GTS (G80) 320MB is a lot (about 392%) better at texture filtering than the Radeon HD 6450 (OEM). (explain)

GeForce 8800 GTS (G80) 320MB		24624 Mtexels/sec
Radeon HD 6450 (OEM)		5000 Mtexels/sec
	Difference: 19624 (392%)

Pixel Rate

If running with high levels of AA is important to you, then the GeForce 8800 GTS (G80) 320MB is the winner, by a large margin. (explain)

GeForce 8800 GTS (G80) 320MB		10260 Mpixels/sec
Radeon HD 6450 (OEM)		2500 Mpixels/sec
	Difference: 7760 (310%)

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 (in units of MB per second) that can be moved past the external memory interface within a second. It's calculated by multiplying the bus width by its memory speed. If it uses DDR memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied per second. This is calculated by multiplying the total number of texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly record to its local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the amount of colour ROPs by the clock speed of the card. 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 output rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.