GeForce 830M vs Radeon HD 5570

Intro

Compare those specs to the Radeon HD 5570, which uses a 40 nm design. AMD has set the core speed at 650 MHz. The DDR3 RAM runs at a frequency of 900 MHz on this specific model. It features 400(80x5) SPUs as well as 20 TAUs and 8 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 830M		25 Watts
Radeon HD 5570		43 Watts
	Difference: 18 Watts (72%)

Memory Bandwidth

In theory, the Radeon HD 5570 should be 100% quicker than the GeForce 830M in general, because of its greater data rate. (explain)

Radeon HD 5570		28800 MB/sec
GeForce 830M		14400 MB/sec
	Difference: 14400 (100%)

Texel Rate

The GeForce 830M is much (approximately 27%) more effective at anisotropic filtering than the Radeon HD 5570. (explain)

GeForce 830M		16464 Mtexels/sec
Radeon HD 5570		13000 Mtexels/sec
	Difference: 3464 (27%)

Pixel Rate

The GeForce 830M is quite a bit (about 58%) faster with regards to anti-aliasing than the Radeon HD 5570, and also should be able to handle higher screen resolutions more effectively. (explain)

GeForce 830M		8232 Mpixels/sec
Radeon HD 5570		5200 Mpixels/sec
	Difference: 3032 (58%)

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 data (in units of MB per second) that can be moved past the external memory interface in a second. It is worked out by multiplying the card's interface width by its memory clock speed. In the case of DDR RAM, it should be multiplied by 2 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 higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed in one second. This figure is calculated by multiplying the total amount of texture units by the core clock speed of the chip. The better this number, the better the card will be at handling 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 that the graphics chip can possibly write to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of 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 output rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.