GeForce GT 450 (OEM) vs Radeon HD 5670

Intro

Compare that to the Radeon HD 5670, which features core clock speeds of 775 MHz on the GPU, and 1000 MHz on the 1024 MB of GDDR5 RAM. It features 400(80x5) SPUs along with 20 Texture Address Units and 8 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5670		61 Watts
GeForce GT 450 (OEM)		106 Watts
	Difference: 45 Watts (74%)

Memory Bandwidth

The GeForce GT 450 (OEM) should theoretically be quite a bit faster than the Radeon HD 5670 in general. (explain)

GeForce GT 450 (OEM)		96000 MB/sec
Radeon HD 5670		64000 MB/sec
	Difference: 32000 (50%)

Texel Rate

The GeForce GT 450 (OEM) is a lot (about 22%) faster with regards to anisotropic filtering than the Radeon HD 5670. (explain)

GeForce GT 450 (OEM)		18960 Mtexels/sec
Radeon HD 5670		15500 Mtexels/sec
	Difference: 3460 (22%)

Pixel Rate

If running with high levels of AA is important to you, then the GeForce GT 450 (OEM) is a better choice, and very much so. (explain)

GeForce GT 450 (OEM)		18960 Mpixels/sec
Radeon HD 5670		6200 Mpixels/sec
	Difference: 12760 (206%)

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 (in units of megabytes per second) that can be transported over the external memory interface within a second. It's worked out by multiplying the card's bus width by its memory speed. If it uses DDR type memory, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be 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 this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

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