GeForce GTX 460 2GB vs Radeon HD 4670 1GB

Intro

Compare those specifications to the Radeon HD 4670 1GB, which features a clock frequency of 750 MHz and a GDDR4/GDDR3/DDR3/DDR2 memory frequency of 1100 MHz. It also features a 128-bit memory bus, and uses a 55 nm design. It is made up of 320(64x5) SPUs, 32 TAUs, and 8 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4670 1GB		70 Watts
GeForce GTX 460 2GB		160 Watts
	Difference: 90 Watts (129%)

Memory Bandwidth

The GeForce GTX 460 2GB, in theory, should be a lot faster than the Radeon HD 4670 1GB in general. (explain)

GeForce GTX 460 2GB		115200 MB/sec
Radeon HD 4670 1GB		35200 MB/sec
	Difference: 80000 (227%)

Texel Rate

The GeForce GTX 460 2GB is quite a bit (about 58%) more effective at texture filtering than the Radeon HD 4670 1GB. (explain)

GeForce GTX 460 2GB		37800 Mtexels/sec
Radeon HD 4670 1GB		24000 Mtexels/sec
	Difference: 13800 (58%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the GeForce GTX 460 2GB is the winner, and very much so. (explain)

GeForce GTX 460 2GB		21600 Mpixels/sec
Radeon HD 4670 1GB		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: Bandwidth is the maximum amount of information (measured in MB per second) that can be moved over the external memory interface in one second. It is worked out by multiplying the interface width by its memory clock speed. If it uses DDR type memory, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the faster 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 processed per second. This figure is worked out by multiplying the total texture units of the card by the core speed of the chip. The better this number, the better the graphics card will be at 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 the graphics card can possibly write to its local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of colour 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 fill rate also depends on many 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.