GeForce GTX 850M vs Radeon HD 5570

Intro

Compare that to the Radeon HD 5570, which makes use of a 40 nm design. AMD has clocked the core speed at 650 MHz. The DDR3 RAM runs at a frequency of 900 MHz on this particular card. It features 400(80x5) SPUs along with 20 TAUs and 8 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 850M		40 Watts
Radeon HD 5570		43 Watts
	Difference: 3 Watts (8%)

Memory Bandwidth

Performance-wise, the GeForce GTX 850M should in theory be a bit superior to the Radeon HD 5570 overall. (explain)

GeForce GTX 850M		32000 MB/sec
Radeon HD 5570		28800 MB/sec
	Difference: 3200 (11%)

Texel Rate

The GeForce GTX 850M should be much (approximately 170%) faster with regards to anisotropic filtering than the Radeon HD 5570. (explain)

GeForce GTX 850M		35040 Mtexels/sec
Radeon HD 5570		13000 Mtexels/sec
	Difference: 22040 (170%)

Pixel Rate

If running with high levels of AA is important to you, then the GeForce GTX 850M is the winner, by far. (explain)

GeForce GTX 850M		14016 Mpixels/sec
Radeon HD 5570		5200 Mpixels/sec
	Difference: 8816 (170%)

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 largest amount of data (counted in MB per second) that can be transferred over the external memory interface within a second. It is worked out by multiplying the interface width by its memory clock speed. If it uses DDR type RAM, the result should be multiplied by 2 once again. If it uses 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 high resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly write to the local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max fill rate.