Radeon HD 6450 (OEM) vs Radeon R9 M375

Intro

Compare those specs to the Radeon R9 M375, which has a core clock speed of 1015 MHz and a DDR3 memory speed of 1100 MHz. It also makes use of a 128-bit memory bus, and makes use of a 28 nm design. It is comprised of 640 SPUs, 40 TAUs, and 16 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the Radeon R9 M375 should perform quite a bit faster than the Radeon HD 6450 (OEM) overall. (explain)

Radeon R9 M375		35200 MB/sec
Radeon HD 6450 (OEM)		12800 MB/sec
	Difference: 22400 (175%)

Texel Rate

The Radeon R9 M375 should be a lot (more or less 712%) more effective at texture filtering than the Radeon HD 6450 (OEM). (explain)

Radeon R9 M375		40600 Mtexels/sec
Radeon HD 6450 (OEM)		5000 Mtexels/sec
	Difference: 35600 (712%)

Pixel Rate

The Radeon R9 M375 should be a lot (approximately 550%) more effective at anti-aliasing than the Radeon HD 6450 (OEM), and able to handle higher screen resolutions while still performing well. (explain)

Radeon R9 M375		16240 Mpixels/sec
Radeon HD 6450 (OEM)		2500 Mpixels/sec
	Difference: 13740 (550%)

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 maximum amount of information (measured in megabytes per second) that can be transferred over the external memory interface in a second. It is calculated by multiplying the card's bus width by its memory speed. If the card has DDR RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed in one second. This number is worked out by multiplying the total number of texture units by the core clock speed of the chip. The higher this number, the better the graphics card will be at 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 that the graphics card can possibly record to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.