Radeon HD 4650 1GB vs Radeon R5 M330

Intro

Compare all that to the Radeon R5 M330, which features core clock speeds of 1030 MHz on the GPU, and 900 MHz on the 2048 MB of DDR3 RAM. It features 320 SPUs along with 20 TAUs and 8 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the Radeon HD 4650 1GB should be 56% quicker than the Radeon R5 M330 overall, due to its greater data rate. (explain)

Radeon HD 4650 1GB		22400 MB/sec
Radeon R5 M330		14400 MB/sec
	Difference: 8000 (56%)

Texel Rate

The Radeon R5 M330 is a small bit (about 7%) better at texture filtering than the Radeon HD 4650 1GB. (explain)

Radeon R5 M330		20600 Mtexels/sec
Radeon HD 4650 1GB		19200 Mtexels/sec
	Difference: 1400 (7%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the Radeon R5 M330 is superior to the Radeon HD 4650 1GB, by far. (explain)

Radeon R5 M330		8240 Mpixels/sec
Radeon HD 4650 1GB		4800 Mpixels/sec
	Difference: 3440 (72%)

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 data (in units of MB per second) that can be transported past the external memory interface within a second. It is calculated by multiplying the card's interface width by its memory speed. If it uses DDR RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the better 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 texture map elements (texels) that can be processed in one second. This is calculated by multiplying the total texture units of the card by the core clock speed of the chip. The better this number, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly record to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called 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 - the lower the bandwidth is, the lower the ability to reach the max fill rate.