GeForce GTX 580 3GB vs Radeon HD 4670 1GB

Intro

Compare that to the Radeon HD 4670 1GB, which uses a 55 nm design. AMD has clocked the core speed at 750 MHz. The GDDR4/GDDR3/DDR3/DDR2 RAM works at a speed of 1100 MHz on this particular model. It features 320(64x5) SPUs along with 32 Texture Address Units and 8 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4670 1GB		70 Watts
GeForce GTX 580 3GB		244 Watts
	Difference: 174 Watts (249%)

Memory Bandwidth

Theoretically, the GeForce GTX 580 3GB should be a lot faster than the Radeon HD 4670 1GB overall. (explain)

GeForce GTX 580 3GB		192384 MB/sec
Radeon HD 4670 1GB		35200 MB/sec
	Difference: 157184 (447%)

Texel Rate

The GeForce GTX 580 3GB should be quite a bit (about 106%) faster with regards to texture filtering than the Radeon HD 4670 1GB. (explain)

GeForce GTX 580 3GB		49408 Mtexels/sec
Radeon HD 4670 1GB		24000 Mtexels/sec
	Difference: 25408 (106%)

Pixel Rate

If running with a high resolution is important to you, then the GeForce GTX 580 3GB is superior to the Radeon HD 4670 1GB, and very much so. (explain)

GeForce GTX 580 3GB		37056 Mpixels/sec
Radeon HD 4670 1GB		6000 Mpixels/sec
	Difference: 31056 (518%)

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 data (counted in megabytes per second) that can be transferred over the external memory interface in one second. The number is calculated by multiplying the interface width by its memory clock speed. In the case of DDR memory, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied in one second. This figure is worked out by multiplying the total amount of texture units of the card by the core clock speed of the chip. The higher this number, 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 the video card can possibly write to the local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the number of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.