GeForce GTX 460 1GB vs Radeon HD 4670 512MB

Intro

Compare all of that to the Radeon HD 4670 512MB, which makes use of a 55 nm design. AMD has clocked the core frequency at 750 MHz. The GDDR4/GDDR3/DDR3/DDR2 RAM works at a speed of 1000 MHz on this specific model. It features 320(64x5) SPUs as well as 32 Texture Address Units and 8 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4670 512MB		70 Watts
GeForce GTX 460 1GB		160 Watts
	Difference: 90 Watts (129%)

Memory Bandwidth

In theory, the GeForce GTX 460 1GB will be 260% quicker than the Radeon HD 4670 512MB in general, because of its greater bandwidth. (explain)

GeForce GTX 460 1GB		115200 MB/sec
Radeon HD 4670 512MB		32000 MB/sec
	Difference: 83200 (260%)

Texel Rate

The GeForce GTX 460 1GB will be quite a bit (approximately 58%) faster with regards to AF than the Radeon HD 4670 512MB. (explain)

GeForce GTX 460 1GB		37800 Mtexels/sec
Radeon HD 4670 512MB		24000 Mtexels/sec
	Difference: 13800 (58%)

Pixel Rate

The GeForce GTX 460 1GB should be quite a bit (about 260%) faster with regards to FSAA than the Radeon HD 4670 512MB, and will be capable of handling higher screen resolutions without slowing down too much. (explain)

GeForce GTX 460 1GB		21600 Mpixels/sec
Radeon HD 4670 512MB		6000 Mpixels/sec
	Difference: 15600 (260%)

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 (measured in MB per second) that can be transported past the external memory interface in a second. It's calculated by multiplying the card's interface width by its memory clock speed. If the card has DDR RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly record to its local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the max fill rate.