GeForce GT 130 vs Radeon HD 6870

Intro

Compare those specifications to the Radeon HD 6870, which has a core clock frequency of 900 MHz and a GDDR5 memory speed of 1050 MHz. It also uses a 256-bit memory bus, and uses a 40 nm design. It is made up of 1120 SPUs, 56 TAUs, and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 130		75 Watts
Radeon HD 6870		151 Watts
	Difference: 76 Watts (101%)

Memory Bandwidth

The Radeon HD 6870, in theory, should perform a lot faster than the GeForce GT 130 in general. (explain)

Radeon HD 6870		134400 MB/sec
GeForce GT 130		12000 MB/sec
	Difference: 122400 (1020%)

Texel Rate

The Radeon HD 6870 is much (approximately 320%) more effective at AF than the GeForce GT 130. (explain)

Radeon HD 6870		50400 Mtexels/sec
GeForce GT 130		12000 Mtexels/sec
	Difference: 38400 (320%)

Pixel Rate

The Radeon HD 6870 should be much (more or less 260%) better at AA than the GeForce GT 130, and should be able to handle higher resolutions better. (explain)

Radeon HD 6870		28800 Mpixels/sec
GeForce GT 130		8000 Mpixels/sec
	Difference: 20800 (260%)

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 data (measured in megabytes per second) that can be transported over the external memory interface in one second. It's calculated by multiplying the card's bus width by the speed of its memory. In the case of DDR memory, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card could possibly record 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 clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.