GeForce GTX 850M vs Radeon HD 5570

Intro

Compare all that to the Radeon HD 5570, which uses a 40 nm design. AMD has clocked the core speed at 650 MHz. The DDR3 RAM is set to run at a speed of 900 MHz on this particular model. It features 400(80x5) SPUs as well as 20 Texture Address Units 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

The GeForce GTX 850M should in theory be a bit faster than 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 is quite a bit (more or less 170%) better at texture 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 using lots of anti-aliasing is important to you, then the GeForce GTX 850M is the winner, and very much so. (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 max amount of data (in units of MB per second) that can be moved over the external memory interface in a second. It's worked out by multiplying the interface width by its memory clock speed. In the case of DDR RAM, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the faster 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 number of texture map elements (texels) that can be applied per second. This is calculated by multiplying the total texture units by the core speed of the chip. The higher this number, the better the graphics 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 maximum number of pixels the graphics card can possibly write to its local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. 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 reach the max fill rate.