GeForce GT 230 vs Radeon HD 4670 512MB

Intro

Compare all of that to the Radeon HD 4670 512MB, which uses a 55 nm design. AMD has clocked the core frequency at 750 MHz. The GDDR4/GDDR3/DDR3/DDR2 RAM runs at a speed of 1000 MHz on this specific model. It features 320(64x5) SPUs as well as 32 TAUs 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 perform a small bit faster than the Radeon HD 4670 512MB overall. (explain)

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

Texel Rate

The Radeon HD 4670 512MB should be much (more or less 173%) faster with regards to anisotropic 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

The Radeon HD 4670 512MB is much (more or less 36%) more effective at AA than the GeForce GT 230, and also should be able to handle higher screen resolutions better. (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 max amount of data (counted in MB per second) that can be transported across the external memory interface within a second. The number is worked out by multiplying the card's bus width by its memory clock speed. If it uses DDR RAM, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied per second. This number is calculated by multiplying the total number of texture units by the core speed of the chip. The better the texel rate, the better the 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 maximum number of pixels that the graphics card can possibly write to its local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - aka 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, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.