GeForce GT 230 vs Radeon HD 6770

Intro

Compare those specifications to the Radeon HD 6770, which has GPU clock speed of 900 MHz, and 512 MB of GDDR5 memory set to run at 1050 MHz through a 128-bit bus. It also is made up of 800 SPUs, 40 Texture Address Units, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 230		65 Watts
Radeon HD 6770		108 Watts
	Difference: 43 Watts (66%)

Memory Bandwidth

Performance-wise, the Radeon HD 6770 should theoretically be quite a bit better than the GeForce GT 230 overall. (explain)

Radeon HD 6770		67200 MB/sec
GeForce GT 230		38400 MB/sec
	Difference: 28800 (75%)

Texel Rate

The Radeon HD 6770 is much (approximately 309%) faster with regards to anisotropic filtering than the GeForce GT 230. (explain)

Radeon HD 6770		36000 Mtexels/sec
GeForce GT 230		8800 Mtexels/sec
	Difference: 27200 (309%)

Pixel Rate

If using a high resolution is important to you, then the Radeon HD 6770 is superior to the GeForce GT 230, by a large margin. (explain)

Radeon HD 6770		14400 Mpixels/sec
GeForce GT 230		4400 Mpixels/sec
	Difference: 10000 (227%)

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 transferred over the external memory interface within a second. The number is calculated by multiplying the bus width by its memory speed. If it uses DDR type memory, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied per second. This number is worked out by multiplying the total texture units by the core 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 applied in one second.

Pixel Rate: Pixel rate is the most pixels the video card could possibly record to its local memory per second - measured in millions of pixels per second. Pixel rate is worked out 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 drawing the pixels (image) on the screen. The actual pixel fill rate also depends on lots of 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.