GeForce 8500 GT vs Radeon HD 6670 (OEM) 1GB

Intro

Compare those specs to the Radeon HD 6670 (OEM) 1GB, which features core speeds of 800 MHz on the GPU, and 1000 MHz on the 1024 MB of GDDR5 memory. It features 480 SPUs as well as 24 Texture Address Units and 8 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8500 GT		45 Watts
Radeon HD 6670 (OEM) 1GB		63 Watts
	Difference: 18 Watts (40%)

Memory Bandwidth

Theoretically, the Radeon HD 6670 (OEM) 1GB should perform a lot faster than the GeForce 8500 GT overall. (explain)

Radeon HD 6670 (OEM) 1GB		64000 MB/sec
GeForce 8500 GT		12800 MB/sec
	Difference: 51200 (400%)

Texel Rate

The Radeon HD 6670 (OEM) 1GB is quite a bit (approximately 433%) better at AF than the GeForce 8500 GT. (explain)

Radeon HD 6670 (OEM) 1GB		19200 Mtexels/sec
GeForce 8500 GT		3600 Mtexels/sec
	Difference: 15600 (433%)

Pixel Rate

If running with a high resolution is important to you, then the Radeon HD 6670 (OEM) 1GB is the winner, and very much so. (explain)

Radeon HD 6670 (OEM) 1GB		6400 Mpixels/sec
GeForce 8500 GT		1800 Mpixels/sec
	Difference: 4600 (256%)

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 megabytes per second) that can be moved over the external memory interface in a second. The number is calculated by multiplying the card's bus width by its memory clock speed. In the case of DDR RAM, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better the card will be in general. It especially helps with AA, HDR 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 amount of texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly record to its local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the number of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.