GeForce 830M vs Radeon HD 4730

Intro

Compare those specs to the Radeon HD 4730, which has clock speeds of 700 MHz on the GPU, and 900 MHz on the 512 MB of GDDR5 RAM. It features 640(128x5) 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)

GeForce 830M		25 Watts
Radeon HD 4730		140 Watts
	Difference: 115 Watts (460%)

Memory Bandwidth

In theory, the Radeon HD 4730 should perform much faster than the GeForce 830M in general. (explain)

Radeon HD 4730		57600 MB/sec
GeForce 830M		14400 MB/sec
	Difference: 43200 (300%)

Texel Rate

The Radeon HD 4730 is a lot (approximately 36%) faster with regards to texture filtering than the GeForce 830M. (explain)

Radeon HD 4730		22400 Mtexels/sec
GeForce 830M		16464 Mtexels/sec
	Difference: 5936 (36%)

Pixel Rate

The GeForce 830M will be much (about 47%) more effective at anti-aliasing than the Radeon HD 4730, and will be capable of handling higher screen resolutions better. (explain)

GeForce 830M		8232 Mpixels/sec
Radeon HD 4730		5600 Mpixels/sec
	Difference: 2632 (47%)

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 data (counted in megabytes per second) that can be transferred past the external memory interface in one second. It's worked out by multiplying the card's interface width by its memory speed. If the card has DDR memory, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly write to its local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the number of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.