GeForce GTX 560 vs Radeon HD 4670 512MB

Intro

Compare all that to the Radeon HD 4670 512MB, which has a clock speed of 750 MHz and a GDDR4/GDDR3/DDR3/DDR2 memory speed of 1000 MHz. It also uses 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 512MB		70 Watts
GeForce GTX 560		150 Watts
	Difference: 80 Watts (114%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 560 should perform quite a bit faster than the Radeon HD 4670 512MB in general. (explain)

GeForce GTX 560		128128 MB/sec
Radeon HD 4670 512MB		32000 MB/sec
	Difference: 96128 (300%)

Texel Rate

The GeForce GTX 560 is much (approximately 89%) better at anisotropic filtering than the Radeon HD 4670 512MB. (explain)

GeForce GTX 560		45360 Mtexels/sec
Radeon HD 4670 512MB		24000 Mtexels/sec
	Difference: 21360 (89%)

Pixel Rate

If using a high resolution is important to you, then the GeForce GTX 560 is a better choice, by a large margin. (explain)

GeForce GTX 560		25920 Mpixels/sec
Radeon HD 4670 512MB		6000 Mpixels/sec
	Difference: 19920 (332%)

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 information (in units of MB per second) that can be transferred past the external memory interface in one second. It's calculated by multiplying the card's bus width by its memory clock speed. If the card has DDR memory, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the better 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 number of texture map elements (texels) that are applied in one second. This is calculated by multiplying the total number of texture units of the card by the core speed of the chip. The higher the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly record to the local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.