GeForce 940M vs Radeon HD 4730

Intro

Compare all that to the Radeon HD 4730, which uses a 55 nm design. AMD has set the core frequency at 700 MHz. The GDDR5 RAM runs at a speed of 900 MHz on this card. It features 640(128x5) SPUs as well as 32 Texture Address Units and 8 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the Radeon HD 4730 is 260% faster than the GeForce 940M overall, due to its greater data rate. (explain)

Radeon HD 4730		57600 MB/sec
GeForce 940M		16000 MB/sec
	Difference: 41600 (260%)

Texel Rate

The GeForce 940M is just a bit (approximately 15%) better at texture filtering than the Radeon HD 4730. (explain)

GeForce 940M		25728 Mtexels/sec
Radeon HD 4730		22400 Mtexels/sec
	Difference: 3328 (15%)

Pixel Rate

The GeForce 940M should be a lot (about 53%) faster with regards to AA than the Radeon HD 4730, and will be capable of handling higher screen resolutions while still performing well. (explain)

GeForce 940M		8576 Mpixels/sec
Radeon HD 4730		5600 Mpixels/sec
	Difference: 2976 (53%)

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 MB per second) that can be transferred over the external memory interface within a second. It's worked out by multiplying the interface width by the speed of its memory. If it uses DDR memory, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly record to its local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.