GeForce 9800 GTX vs Radeon R9 M375

Intro

Compare those specifications to the Radeon R9 M375, which has a clock speed of 1015 MHz and a DDR3 memory frequency of 1100 MHz. It also uses a 128-bit bus, and uses a 28 nm design. It is made up of 640 SPUs, 40 Texture Address Units, and 16 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

The GeForce 9800 GTX should in theory perform quite a bit faster than the Radeon R9 M375 in general. (explain)

GeForce 9800 GTX		70400 MB/sec
Radeon R9 M375		35200 MB/sec
	Difference: 35200 (100%)

Texel Rate

The GeForce 9800 GTX is just a bit (about 6%) faster with regards to texture filtering than the Radeon R9 M375. (explain)

GeForce 9800 GTX		43200 Mtexels/sec
Radeon R9 M375		40600 Mtexels/sec
	Difference: 2600 (6%)

Pixel Rate

The Radeon R9 M375 is much (more or less 50%) faster with regards to full screen anti-aliasing than the GeForce 9800 GTX, and capable of handling higher screen resolutions while still performing well. (explain)

Radeon R9 M375		16240 Mpixels/sec
GeForce 9800 GTX		10800 Mpixels/sec
	Difference: 5440 (50%)

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 information (measured in MB per second) that can be moved across the external memory interface in one second. It's calculated by multiplying the bus width by the speed of its memory. In the case of DDR type RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed per second. This figure is calculated by multiplying the total amount of texture units by the core clock speed of the chip. The better the texel rate, the better the video 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 most pixels that the graphics chip could possibly write to its local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Render Output Units 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 output rate also depends on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.