GeForce 8800 GTS (G80) 320MB vs Radeon HD 6450 (OEM) 1GB

Intro

Compare those specs to the Radeon HD 6450 (OEM) 1GB, which makes use of a 40 nm design. AMD has set the core frequency at 750 MHz. The GDDR5 RAM works at a frequency of 900 MHz on this specific model. It features 160 SPUs along with 8 TAUs and 4 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6450 (OEM) 1GB		31 Watts
GeForce 8800 GTS (G80) 320MB		143 Watts
	Difference: 112 Watts (361%)

Memory Bandwidth

In theory, the GeForce 8800 GTS (G80) 320MB will be 120% faster than the Radeon HD 6450 (OEM) 1GB overall, because of its higher bandwidth. (explain)

GeForce 8800 GTS (G80) 320MB		63360 MB/sec
Radeon HD 6450 (OEM) 1GB		28800 MB/sec
	Difference: 34560 (120%)

Texel Rate

The GeForce 8800 GTS (G80) 320MB is much (approximately 310%) more effective at AF than the Radeon HD 6450 (OEM) 1GB. (explain)

GeForce 8800 GTS (G80) 320MB		24624 Mtexels/sec
Radeon HD 6450 (OEM) 1GB		6000 Mtexels/sec
	Difference: 18624 (310%)

Pixel Rate

The GeForce 8800 GTS (G80) 320MB should be a lot (more or less 242%) faster with regards to AA than the Radeon HD 6450 (OEM) 1GB, and should be capable of handling higher resolutions better. (explain)

GeForce 8800 GTS (G80) 320MB		10260 Mpixels/sec
Radeon HD 6450 (OEM) 1GB		3000 Mpixels/sec
	Difference: 7260 (242%)

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 information (measured in MB per second) that can be moved past the external memory interface within a second. It's worked out by multiplying the card's interface width by its memory speed. If it uses DDR type RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels the video card could 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 clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.