Radeon HD 4670 1GB vs Radeon R5 M330

Intro

Compare that to the Radeon R5 M330, which features a GPU core clock speed of 1030 MHz, and 2048 MB of DDR3 memory running at 900 MHz through a 64-bit bus. It also is made up of 320 Stream Processors, 20 TAUs, and 8 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the Radeon HD 4670 1GB will be 144% quicker than the Radeon R5 M330 in general, because of its higher bandwidth. (explain)

Radeon HD 4670 1GB		35200 MB/sec
Radeon R5 M330		14400 MB/sec
	Difference: 20800 (144%)

Texel Rate

The Radeon HD 4670 1GB will be a bit (approximately 17%) more effective at anisotropic filtering than the Radeon R5 M330. (explain)

Radeon HD 4670 1GB		24000 Mtexels/sec
Radeon R5 M330		20600 Mtexels/sec
	Difference: 3400 (17%)

Pixel Rate

The Radeon R5 M330 should be quite a bit (about 37%) better at full screen anti-aliasing than the Radeon HD 4670 1GB, and will be capable of handling higher resolutions more effectively. (explain)

Radeon R5 M330		8240 Mpixels/sec
Radeon HD 4670 1GB		6000 Mpixels/sec
	Difference: 2240 (37%)

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 (counted in megabytes per second) that can be transferred over the external memory interface in one second. The number is calculated by multiplying the bus width by the speed of its memory. 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 high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied in one second. This figure is worked out by multiplying the total texture units 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 per second.

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly record 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 card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.