GeForce 920M vs Radeon HD 4650 1GB

Intro

Compare all of that to the Radeon HD 4650 1GB, which comes with GPU core speed of 600 MHz, and 1024 MB of GDDR3 RAM set to run at 700 MHz through a 128-bit bus. It also is made up of 320(64x5) Stream Processors, 32 Texture Address Units, and 8 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

The Radeon HD 4650 1GB should in theory perform a lot faster than the GeForce 920M overall. (explain)

Radeon HD 4650 1GB		22400 MB/sec
GeForce 920M		14400 MB/sec
	Difference: 8000 (56%)

Texel Rate

The GeForce 920M should be quite a bit (more or less 59%) more effective at anisotropic filtering than the Radeon HD 4650 1GB. (explain)

GeForce 920M		30528 Mtexels/sec
Radeon HD 4650 1GB		19200 Mtexels/sec
	Difference: 11328 (59%)

Pixel Rate

The GeForce 920M should be much (more or less 59%) better at AA than the Radeon HD 4650 1GB, and will be able to handle higher screen resolutions while still performing well. (explain)

GeForce 920M		7632 Mpixels/sec
Radeon HD 4650 1GB		4800 Mpixels/sec
	Difference: 2832 (59%)

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 (measured in megabytes per second) that can be moved over the external memory interface within a second. It's worked out by multiplying the card's bus width by the speed of its memory. If the card has DDR RAM, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster 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 amount of texture map elements (texels) that are processed per second. This is calculated by multiplying the total amount of texture units of the card by the core speed of the chip. The better the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly record to the local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.