GeForce 8300 GS (OEM) vs Radeon HD 6870

Intro

Compare those specs to the Radeon HD 6870, which has core clock speeds of 900 MHz on the GPU, and 1050 MHz on the 1024 MB of GDDR5 memory. It features 1120 SPUs along with 56 TAUs and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8300 GS (OEM)		40 Watts
Radeon HD 6870		151 Watts
	Difference: 111 Watts (278%)

Memory Bandwidth

As far as performance goes, the Radeon HD 6870 should theoretically be a lot better than the GeForce 8300 GS (OEM) overall. (explain)

Radeon HD 6870		134400 MB/sec
GeForce 8300 GS (OEM)		6400 MB/sec
	Difference: 128000 (2000%)

Texel Rate

The Radeon HD 6870 will be a lot (about 2700%) better at texture filtering than the GeForce 8300 GS (OEM). (explain)

Radeon HD 6870		50400 Mtexels/sec
GeForce 8300 GS (OEM)		1800 Mtexels/sec
	Difference: 48600 (2700%)

Pixel Rate

The Radeon HD 6870 should be much (about 3100%) faster with regards to FSAA than the GeForce 8300 GS (OEM), and should be capable of handling higher resolutions without losing too much performance. (explain)

Radeon HD 6870		28800 Mpixels/sec
GeForce 8300 GS (OEM)		900 Mpixels/sec
	Difference: 27900 (3100%)

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 past the external memory interface in a second. It's calculated by multiplying the interface width by its memory speed. If the card has DDR RAM, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the 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 processed in one second. This number is worked out by multiplying the total number of texture units by the core clock speed of the chip. The higher this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly record to the local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the number of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.