Radeon HD 4850 2GB vs Radeon R5 M330

Intro

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

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Performance-wise, the Radeon HD 4850 2GB should in theory be quite a bit better than the Radeon R5 M330 in general. (explain)

Radeon HD 4850 2GB		63552 MB/sec
Radeon R5 M330		14400 MB/sec
	Difference: 49152 (341%)

Texel Rate

The Radeon HD 4850 2GB should be much (about 21%) more effective at anisotropic filtering than the Radeon R5 M330. (explain)

Radeon HD 4850 2GB		25000 Mtexels/sec
Radeon R5 M330		20600 Mtexels/sec
	Difference: 4400 (21%)

Pixel Rate

The Radeon HD 4850 2GB will be quite a bit (about 21%) more effective at full screen anti-aliasing than the Radeon R5 M330, and should be capable of handling higher screen resolutions better. (explain)

Radeon HD 4850 2GB		10000 Mpixels/sec
Radeon R5 M330		8240 Mpixels/sec
	Difference: 1760 (21%)

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 across the external memory interface in one second. It's worked out by multiplying the bus width by its memory speed. If the card has DDR RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied per second. This is worked out by multiplying the total texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the graphics card will be at 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 could possibly write to its local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.