GeForce 8800 Ultra vs Radeon R9 M375X

Intro

Compare those specifications to the Radeon R9 M375X, which comes with core clock speeds of 1015 MHz on the GPU, and 1125 MHz on the 4096 MB of GDDR5 memory. It features 640 SPUs along with 40 TAUs and 16 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

The GeForce 8800 Ultra should in theory be a lot faster than the Radeon R9 M375X in general. (explain)

GeForce 8800 Ultra		103680 MB/sec
Radeon R9 M375X		72000 MB/sec
	Difference: 31680 (44%)

Texel Rate

The Radeon R9 M375X will be a bit (approximately 4%) faster with regards to texture filtering than the GeForce 8800 Ultra. (explain)

Radeon R9 M375X		40600 Mtexels/sec
GeForce 8800 Ultra		39168 Mtexels/sec
	Difference: 1432 (4%)

Pixel Rate

The Radeon R9 M375X is just a bit (more or less 11%) better at full screen anti-aliasing than the GeForce 8800 Ultra, and should be capable of handling higher resolutions more effectively. (explain)

Radeon R9 M375X		16240 Mpixels/sec
GeForce 8800 Ultra		14688 Mpixels/sec
	Difference: 1552 (11%)

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 (in units of MB per second) that can be moved over the external memory interface in one second. It's worked out by multiplying the interface width by its memory clock speed. If the card has DDR RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed in one second. This figure is worked out by multiplying the total amount of texture units by the core clock speed of the chip. The higher 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 maximum number of pixels the video card could possibly write to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.