Radeon HD 4650 512MB vs Radeon R5 M330

Intro

Compare those specifications to the Radeon R5 M330, which has GPU core speed of 1030 MHz, and 2048 MB of DDR3 RAM running at 900 MHz through a 64-bit bus. It also features 320 SPUs, 20 TAUs, and 8 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

The Radeon HD 4650 512MB should in theory be a bit faster than the Radeon R5 M330 overall. (explain)

Radeon HD 4650 512MB		16000 MB/sec
Radeon R5 M330		14400 MB/sec
	Difference: 1600 (11%)

Texel Rate

The Radeon R5 M330 will be a bit (more or less 7%) better at texture filtering than the Radeon HD 4650 512MB. (explain)

Radeon R5 M330		20600 Mtexels/sec
Radeon HD 4650 512MB		19200 Mtexels/sec
	Difference: 1400 (7%)

Pixel Rate

The Radeon R5 M330 should be a lot (approximately 72%) better at anti-aliasing than the Radeon HD 4650 512MB, and also should be capable of handling higher resolutions while still performing well. (explain)

Radeon R5 M330		8240 Mpixels/sec
Radeon HD 4650 512MB		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 maximum amount of data (counted in megabytes per second) that can be transferred over the external memory interface within a second. It is worked out by multiplying the interface width by the speed of its memory. If it uses 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, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied per second. This number is worked out by multiplying the total texture units by the core speed of the chip. The better this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly write to the local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Render Output Units 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 fill rate also depends on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.