GeForce GT 450 (OEM) vs Radeon HD 6750

Intro

Compare all of that to the Radeon HD 6750, which has clock speeds of 725 MHz on the GPU, and 1000 MHz on the 512 MB of GDDR5 RAM. It features 720 SPUs along with 36 Texture Address Units and 16 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6750		86 Watts
GeForce GT 450 (OEM)		106 Watts
	Difference: 20 Watts (23%)

Memory Bandwidth

Performance-wise, the GeForce GT 450 (OEM) should theoretically be a lot superior to the Radeon HD 6750 overall. (explain)

GeForce GT 450 (OEM)		96000 MB/sec
Radeon HD 6750		64000 MB/sec
	Difference: 32000 (50%)

Texel Rate

The Radeon HD 6750 will be quite a bit (more or less 38%) better at texture filtering than the GeForce GT 450 (OEM). (explain)

Radeon HD 6750		26100 Mtexels/sec
GeForce GT 450 (OEM)		18960 Mtexels/sec
	Difference: 7140 (38%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the GeForce GT 450 (OEM) is the winner, and very much so. (explain)

GeForce GT 450 (OEM)		18960 Mpixels/sec
Radeon HD 6750		11600 Mpixels/sec
	Difference: 7360 (63%)

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 maximum amount of information (counted in megabytes per second) that can be transported past the external memory interface within a second. It is calculated by multiplying the interface width by its memory clock speed. If it uses DDR type RAM, 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 AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed in one second. This is calculated by multiplying the total amount of 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 processed per second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly record to its local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on lots of 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.