GeForce GT 230 vs Radeon HD 4670 512MB

Intro

Compare all that to the Radeon HD 4670 512MB, which has a core clock frequency of 750 MHz and a GDDR4/GDDR3/DDR3/DDR2 memory frequency of 1000 MHz. It also uses a 128-bit memory bus, and uses a 55 nm design. It is comprised of 320(64x5) SPUs, 32 Texture Address Units, and 8 ROPs.

Display Graphs

Hide Graphs

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

The GeForce GT 230, in theory, should be a bit faster than the Radeon HD 4670 512MB in general. (explain)

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

Texel Rate

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

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

Pixel Rate

The Radeon HD 4670 512MB should be quite a bit (about 36%) faster with regards to AA than the GeForce GT 230, and capable of handling higher screen resolutions more effectively. (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 largest amount of data (in units of MB per second) that can be transferred over the external memory interface in a second. It is calculated by multiplying the bus width by its memory clock speed. If the card has DDR memory, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly write to its local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called 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, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.