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

Intro

Compare those specs to the Radeon HD 6670 (OEM) 1GB, which features GPU core speed of 800 MHz, and 1024 MB of GDDR5 memory running at 1000 MHz through a 128-bit bus. It also is comprised of 480 Stream Processors, 24 Texture Address Units, and 8 Raster Operation Units.

Display Graphs

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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

As far as performance goes, the Radeon HD 6670 (OEM) 1GB should in theory be a lot better than the GeForce 8500 GT in general. (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 should be much (about 433%) better at anisotropic filtering 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 using a high screen resolution is important to you, then the Radeon HD 6670 (OEM) 1GB is superior to the GeForce 8500 GT, by far. (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 data (in units of megabytes per second) that can be transported over the external memory interface within a second. It is worked out by multiplying the bus width by its memory clock speed. In the case of DDR RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed per second. This figure is worked out by multiplying the total number of texture units by the core clock speed of the chip. The better the texel rate, 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 maximum amount of pixels that the graphics chip can possibly write to its local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the max fill rate.