Radeon HD 4650 1GB vs Radeon R5 M230

Intro

Compare all of that to the Radeon R5 M230, which features core speeds of 780 MHz on the GPU, and 1000 MHz on the 2048 MB of DDR3 RAM. It features 320 SPUs along with 20 TAUs and 4 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

The Radeon HD 4650 1GB should in theory perform quite a bit faster than the Radeon R5 M230 in general. (explain)

Radeon HD 4650 1GB		22400 MB/sec
Radeon R5 M230		16000 MB/sec
	Difference: 6400 (40%)

Texel Rate

The Radeon HD 4650 1GB should be much (more or less 23%) better at AF than the Radeon R5 M230. (explain)

Radeon HD 4650 1GB		19200 Mtexels/sec
Radeon R5 M230		15600 Mtexels/sec
	Difference: 3600 (23%)

Pixel Rate

The Radeon HD 4650 1GB will be quite a bit (approximately 54%) more effective at AA than the Radeon R5 M230, and should be able to handle higher screen resolutions without slowing down too much. (explain)

Radeon HD 4650 1GB		4800 Mpixels/sec
Radeon R5 M230		3120 Mpixels/sec
	Difference: 1680 (54%)

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: Bandwidth is the max amount of data (in units of megabytes per second) that can be transported past the external memory interface in a second. The number is calculated by multiplying the card's interface width by its memory speed. If it uses DDR memory, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the better 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 number of texture map elements (texels) that are processed in one second. This figure is calculated by multiplying the total number of texture units by the core clock speed of the chip. The higher this number, the better the graphics 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 maximum number of pixels that the graphics card can possibly write to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the number of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the max fill rate.