GeForce 9800 GTX+ vs Radeon R9 M375

Intro

Compare all that to the Radeon R9 M375, which features a clock speed of 1015 MHz and a DDR3 memory speed of 1100 MHz. It also makes use of a 128-bit memory bus, and uses a 28 nm design. It is comprised 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+ will be a small bit (more or less 16%) faster with regards to anisotropic filtering than the Radeon R9 M375. (explain)

GeForce 9800 GTX+		47232 Mtexels/sec
Radeon R9 M375		40600 Mtexels/sec
	Difference: 6632 (16%)

Pixel Rate

The Radeon R9 M375 should be quite a bit (approximately 38%) more effective at AA than the GeForce 9800 GTX+, and also capable of handling higher screen resolutions while still performing well. (explain)

Radeon R9 M375		16240 Mpixels/sec
GeForce 9800 GTX+		11808 Mpixels/sec
	Difference: 4432 (38%)

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 (in units of MB per second) that can be transported across the external memory interface in one second. The number is worked out by multiplying the bus width by its memory speed. If the card has DDR type RAM, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed per second. This figure is worked out by multiplying the total number of texture units by the core clock speed of the chip. The better this number, the better the video 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 number of pixels the graphics card could possibly record to the local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the number of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the max fill rate.