GeForce GT 230 vs Radeon HD 4670 512MB

Intro

Compare all that to the Radeon HD 4670 512MB, which comes with a core clock speed of 750 MHz and a GDDR4/GDDR3/DDR3/DDR2 memory speed of 1000 MHz. It also makes use of a 128-bit memory bus, and makes use of a 55 nm design. It features 320(64x5) SPUs, 32 TAUs, and 8 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 230		65 Watts
Radeon HD 4670 512MB		70 Watts
	Difference: 5 Watts (8%)

Memory Bandwidth

In theory, the GeForce GT 230 will be 20% quicker than the Radeon HD 4670 512MB overall, because of its greater data rate. (explain)

GeForce GT 230		38400 MB/sec
Radeon HD 4670 512MB		32000 MB/sec
	Difference: 6400 (20%)

Texel Rate

The Radeon HD 4670 512MB will be quite a bit (about 173%) more effective at texture filtering than the GeForce GT 230. (explain)

Radeon HD 4670 512MB		24000 Mtexels/sec
GeForce GT 230		8800 Mtexels/sec
	Difference: 15200 (173%)

Pixel Rate

If using high levels of AA is important to you, then the Radeon HD 4670 512MB is superior to the GeForce GT 230, by a large margin. (explain)

Radeon HD 4670 512MB		6000 Mpixels/sec
GeForce GT 230		4400 Mpixels/sec
	Difference: 1600 (36%)

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 maximum amount of data (in units of MB per second) that can be transported over the external memory interface in one second. It is calculated by multiplying the bus width by its memory speed. In the case of DDR type memory, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied per second. This 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 processed in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly record to its local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.