GeForce GTX 850M vs Radeon HD 4670 1GB

Intro

Compare those specs to the Radeon HD 4670 1GB, which makes use of a 55 nm design. AMD has set the core speed at 750 MHz. The GDDR4/GDDR3/DDR3/DDR2 memory is set to run at a frequency of 1100 MHz on this specific model. 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)

GeForce GTX 850M		40 Watts
Radeon HD 4670 1GB		70 Watts
	Difference: 30 Watts (75%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 4670 1GB should be just a bit faster than the GeForce GTX 850M in general. (explain)

Radeon HD 4670 1GB		35200 MB/sec
GeForce GTX 850M		32000 MB/sec
	Difference: 3200 (10%)

Texel Rate

The GeForce GTX 850M should be a lot (more or less 46%) faster with regards to anisotropic filtering than the Radeon HD 4670 1GB. (explain)

GeForce GTX 850M		35040 Mtexels/sec
Radeon HD 4670 1GB		24000 Mtexels/sec
	Difference: 11040 (46%)

Pixel Rate

If running with a high resolution is important to you, then the GeForce GTX 850M is a better choice, by far. (explain)

GeForce GTX 850M		14016 Mpixels/sec
Radeon HD 4670 1GB		6000 Mpixels/sec
	Difference: 8016 (134%)

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 (counted in megabytes per second) that can be transported across the external memory interface in a second. It's worked out by multiplying the interface width by the speed of its memory. In the case of DDR memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed in one second. This number is calculated by multiplying the total texture units of the card by the core speed of the chip. The higher the texel rate, 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 could possibly record to its local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the amount of colour ROPs 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 output rate also depends on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.