GeForce 8300 GS (OEM) vs Radeon HD 7870

Intro

Compare those specifications to the Radeon HD 7870, which makes use of a 28 nm design. AMD has clocked the core speed at 1000 MHz. The GDDR5 RAM runs at a frequency of 1200 MHz on this specific card. It features 1280 SPUs along with 80 Texture Address Units and 32 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8300 GS (OEM)		40 Watts
Radeon HD 7870		175 Watts
	Difference: 135 Watts (338%)

Memory Bandwidth

As far as performance goes, the Radeon HD 7870 should theoretically be quite a bit better than the GeForce 8300 GS (OEM) in general. (explain)

Radeon HD 7870		153600 MB/sec
GeForce 8300 GS (OEM)		6400 MB/sec
	Difference: 147200 (2300%)

Texel Rate

The Radeon HD 7870 should be much (more or less 4344%) more effective at anisotropic filtering than the GeForce 8300 GS (OEM). (explain)

Radeon HD 7870		80000 Mtexels/sec
GeForce 8300 GS (OEM)		1800 Mtexels/sec
	Difference: 78200 (4344%)

Pixel Rate

The Radeon HD 7870 will be a lot (more or less 3456%) faster with regards to AA than the GeForce 8300 GS (OEM), and also will be able to handle higher resolutions more effectively. (explain)

Radeon HD 7870		32000 Mpixels/sec
GeForce 8300 GS (OEM)		900 Mpixels/sec
	Difference: 31100 (3456%)

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 transferred across the external memory interface in one second. It is worked out by multiplying the interface width by its memory speed. If the card has DDR type memory, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, 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 amount of texture map elements (texels) that are applied per second. This number is worked out by multiplying the total texture units by the core clock speed of the chip. The higher this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card 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 Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.