Radeon HD 4650 1GB vs Radeon R5 M330

Intro

Compare that to the Radeon R5 M330, which has a core clock speed of 1030 MHz and a DDR3 memory frequency of 900 MHz. It also features a 64-bit bus, and uses a 28 nm design. It is comprised of 320 SPUs, 20 Texture Address Units, and 8 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

As far as performance goes, the Radeon HD 4650 1GB should theoretically be much better than the Radeon R5 M330 in general. (explain)

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

Texel Rate

The Radeon R5 M330 will be a little bit (about 7%) more effective at anisotropic 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

The Radeon R5 M330 will be a lot (about 72%) faster with regards to FSAA than the Radeon HD 4650 1GB, and also will be able to handle higher screen resolutions without slowing down too much. (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: Bandwidth is the largest amount of data (measured in MB per second) that can be transported across the external memory interface within a second. It is worked out by multiplying the card's bus width by its memory speed. In the case of DDR memory, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better 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 number of texture map elements (texels) that are applied in one second. This figure is worked out by multiplying the total amount 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 per second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly write to the local memory per second - measured in millions of pixels per second. The number is calculated 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 drawing the pixels (image) on the screen. The actual pixel rate is also dependant on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.