GeForce 8300 GS (OEM) vs Radeon HD 5870

Intro

Compare those specs to the Radeon HD 5870, which features clock speeds of 850 MHz on the GPU, and 1200 MHz on the 1024 MB of GDDR5 memory. It features 1600(320x5) SPUs along with 80 TAUs and 32 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8300 GS (OEM)		40 Watts
Radeon HD 5870		188 Watts
	Difference: 148 Watts (370%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 5870 should be 2300% quicker than the GeForce 8300 GS (OEM) in general, because of its greater data rate. (explain)

Radeon HD 5870		153600 MB/sec
GeForce 8300 GS (OEM)		6400 MB/sec
	Difference: 147200 (2300%)

Texel Rate

The Radeon HD 5870 is much (approximately 3678%) more effective at texture filtering than the GeForce 8300 GS (OEM). (explain)

Radeon HD 5870		68000 Mtexels/sec
GeForce 8300 GS (OEM)		1800 Mtexels/sec
	Difference: 66200 (3678%)

Pixel Rate

The Radeon HD 5870 should be a lot (approximately 2922%) faster with regards to anti-aliasing than the GeForce 8300 GS (OEM), and also should be capable of handling higher screen resolutions while still performing well. (explain)

Radeon HD 5870		27200 Mpixels/sec
GeForce 8300 GS (OEM)		900 Mpixels/sec
	Difference: 26300 (2922%)

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 (counted in megabytes per second) that can be moved over the external memory interface in a second. It's calculated by multiplying the card's bus width by its memory speed. In the case of DDR RAM, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied per second. This is worked out by multiplying the total amount of texture units by the core clock speed of the chip. The better this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly record to the local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Render Output Units by the clock 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 memory bandwidth is, the lower the ability to get to the max fill rate.