GeForce 930M vs Radeon HD 4650 1GB

Intro

Compare that to the Radeon HD 4650 1GB, which makes use of a 55 nm design. AMD has clocked the core frequency at 600 MHz. The GDDR3 RAM runs at a frequency of 700 MHz on this card. It features 320(64x5) SPUs along with 32 Texture Address Units and 8 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

The Radeon HD 4650 1GB, in theory, should be much faster than the GeForce 930M in general. (explain)

Radeon HD 4650 1GB		22400 MB/sec
GeForce 930M		14400 MB/sec
	Difference: 8000 (56%)

Texel Rate

The GeForce 930M should be a little bit (approximately 16%) more effective at texture filtering than the Radeon HD 4650 1GB. (explain)

GeForce 930M		22272 Mtexels/sec
Radeon HD 4650 1GB		19200 Mtexels/sec
	Difference: 3072 (16%)

Pixel Rate

If using high levels of AA is important to you, then the GeForce 930M is a better choice, and very much so. (explain)

GeForce 930M		7424 Mpixels/sec
Radeon HD 4650 1GB		4800 Mpixels/sec
	Difference: 2624 (55%)

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 largest amount of information (measured in megabytes per second) that can be transferred over the external memory interface in a second. It is calculated by multiplying the card's interface width by the speed of its memory. If it uses DDR RAM, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed in one second. This is worked out by multiplying the total number of texture units of the card by the core clock 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 processed in a second.

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