GeForce GTX 580 vs Radeon HD 4670 1GB

Intro

Compare those specifications 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 runs at a frequency of 1100 MHz on this specific card. It features 320(64x5) SPUs along with 32 TAUs and 8 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

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

Memory Bandwidth

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

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

Texel Rate

The GeForce GTX 580 will be quite a bit (more or less 106%) better at AF than the Radeon HD 4670 1GB. (explain)

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

Pixel Rate

The GeForce GTX 580 should be much (more or less 518%) more effective at AA than the Radeon HD 4670 1GB, and also will be able to handle higher resolutions without losing too much performance. (explain)

GeForce GTX 580		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: Memory bandwidth is the maximum amount of information (measured in MB per second) that can be moved across the external memory interface in a second. The number is worked out by multiplying the card's interface width by its memory speed. If it uses DDR RAM, it should be multiplied by 2 again. If it uses 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 higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly record to its local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the number of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.