GeForce GTX 285 1GB vs Radeon HD 4670 512MB

Intro

Compare all of that to the Radeon HD 4670 512MB, which uses a 55 nm design. AMD has set the core frequency at 750 MHz. The GDDR4/GDDR3/DDR3/DDR2 memory is set to run at a frequency 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)

Radeon HD 4670 512MB		70 Watts
GeForce GTX 285 1GB		204 Watts
	Difference: 134 Watts (191%)

Memory Bandwidth

Performance-wise, the GeForce GTX 285 1GB should in theory be a lot better than the Radeon HD 4670 512MB in general. (explain)

GeForce GTX 285 1GB		158976 MB/sec
Radeon HD 4670 512MB		32000 MB/sec
	Difference: 126976 (397%)

Texel Rate

The GeForce GTX 285 1GB will be a lot (more or less 116%) more effective at anisotropic filtering than the Radeon HD 4670 512MB. (explain)

GeForce GTX 285 1GB		51840 Mtexels/sec
Radeon HD 4670 512MB		24000 Mtexels/sec
	Difference: 27840 (116%)

Pixel Rate

The GeForce GTX 285 1GB should be a lot (more or less 246%) faster with regards to FSAA than the Radeon HD 4670 512MB, and should be capable of handling higher screen resolutions without slowing down too much. (explain)

GeForce GTX 285 1GB		20736 Mpixels/sec
Radeon HD 4670 512MB		6000 Mpixels/sec
	Difference: 14736 (246%)

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: Bandwidth is the maximum amount of information (in units of MB per second) that can be transferred past the external memory interface within a second. It's calculated by multiplying the card's bus width by the speed of its memory. If the card has DDR type RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly record to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.