GeForce GTX 880M vs Radeon HD 4670 512MB

Intro

Compare those specifications to the Radeon HD 4670 512MB, which uses a 55 nm design. AMD has set the core speed at 750 MHz. The GDDR4/GDDR3/DDR3/DDR2 RAM runs at a speed of 1000 MHz on this card. It features 320(64x5) SPUs along with 32 Texture Address Units and 8 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4670 512MB		70 Watts
GeForce GTX 880M		130 Watts
	Difference: 60 Watts (86%)

Memory Bandwidth

As far as performance goes, the GeForce GTX 880M should theoretically be a lot better than the Radeon HD 4670 512MB overall. (explain)

GeForce GTX 880M		128000 MB/sec
Radeon HD 4670 512MB		32000 MB/sec
	Difference: 96000 (300%)

Texel Rate

The GeForce GTX 880M will be a lot (about 409%) better at anisotropic filtering than the Radeon HD 4670 512MB. (explain)

GeForce GTX 880M		122112 Mtexels/sec
Radeon HD 4670 512MB		24000 Mtexels/sec
	Difference: 98112 (409%)

Pixel Rate

The GeForce GTX 880M will be much (more or less 409%) better at AA than the Radeon HD 4670 512MB, and will be capable of handling higher screen resolutions without slowing down too much. (explain)

GeForce GTX 880M		30528 Mpixels/sec
Radeon HD 4670 512MB		6000 Mpixels/sec
	Difference: 24528 (409%)

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 (in units of megabytes per second) that can be transported across the external memory interface within a second. It is calculated by multiplying the card's interface width by its memory speed. If it uses DDR type memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better 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 texture map elements (texels) that are applied per second. This is calculated by multiplying the total texture units 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 applied in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card can possibly write to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.